diff --git a/LICENSE b/LICENSE
new file mode 100644
index 00000000..d6456956
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,202 @@
+
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+
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diff --git a/README.md b/README.md
index 3dafea40..d9cf44ad 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,8 @@ LinkBench is highly configurable and extensible.  It can be reconfigured
 to simulate a variety of workloads and plugins can be written for
 benchmarking additional database systems.
 
+LinkBench is released under the Apache License, Version 2.0.
+
 Background
 ----------
 One way of modeling social network data is as a *social graph*, where
diff --git a/src/java/com/facebook/LinkBench/ApproxHarmonic.java b/src/java/com/facebook/LinkBench/ApproxHarmonic.java
new file mode 100644
index 00000000..abf425e8
--- /dev/null
+++ b/src/java/com/facebook/LinkBench/ApproxHarmonic.java
@@ -0,0 +1,68 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.facebook.LinkBench.distributions;
+
+/**
+ * Approximations to harmonic numbers that speed up calculation time.
+ */
+public class ApproxHarmonic {
+  private static final long APPROX_THRESHOLD = 100000;
+
+  // Euler Mascheroni constant
+  private static final double EULER_MASCHERONI =
+                  0.5772156649015328606065120900824024310421;
+
+  
+  /**
+   * Approximation to generalized harmonic for 0 >= m >= 1.
+   * Designed to not take more than a couple of seconds to calculate,
+   * and the have error of < 0.05%
+   * @param n
+   * @param m assume > 0 <=
+   * @return
+   */
+  public static double generalizedHarmonic(final long n,
+                                                 final double m) {
+    if (n < 0) {
+      throw new IllegalArgumentException("n must be non-negative");
+    }
+    if (m < 0 || m > 1) {
+      throw new IllegalArgumentException("m = " + m + " outside " +
+                                         "range [0, 1]");
+    }
+    if (n < APPROX_THRESHOLD) {
+      // Approximation less accurate for small n, and full calculation
+      // doesn't take as long
+      return Harmonic.generalizedHarmonic(n, m);
+    }
+
+    if (m == 1) {
+      // Standard approximation for regular harmonic numbers
+      return Math.log(n) + EULER_MASCHERONI + 1 / (2 * n);
+    } else {
+      // Rough approximation for generalized harmonic for
+      // m >= 0 and m <= 1
+      
+      // Standard integral of 1/(n^k)
+      double integral = (1 / (1 - m)) * Math.pow(n, 1 - m);  
+
+      // Empirically derived correction factor that is good enough
+      // to get to within 0.2% or so of exact number
+      double correction = 0.58 - 1 / (1 - m);
+      return integral + correction;
+    }
+  }
+}
diff --git a/src/java/com/facebook/LinkBench/Config.java b/src/java/com/facebook/LinkBench/Config.java
index 039f2805..d0bb05f1 100644
--- a/src/java/com/facebook/LinkBench/Config.java
+++ b/src/java/com/facebook/LinkBench/Config.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 /**
diff --git a/src/java/com/facebook/LinkBench/ConfigUtil.java b/src/java/com/facebook/LinkBench/ConfigUtil.java
index 9b8fc705..41b268d6 100644
--- a/src/java/com/facebook/LinkBench/ConfigUtil.java
+++ b/src/java/com/facebook/LinkBench/ConfigUtil.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.io.File;
diff --git a/src/java/com/facebook/LinkBench/GraphStore.java b/src/java/com/facebook/LinkBench/GraphStore.java
index 281ce913..cf9c27dd 100644
--- a/src/java/com/facebook/LinkBench/GraphStore.java
+++ b/src/java/com/facebook/LinkBench/GraphStore.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.util.List;
diff --git a/src/java/com/facebook/LinkBench/InvertibleShuffler.java b/src/java/com/facebook/LinkBench/InvertibleShuffler.java
index 18741870..b69e5326 100644
--- a/src/java/com/facebook/LinkBench/InvertibleShuffler.java
+++ b/src/java/com/facebook/LinkBench/InvertibleShuffler.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.util.Random;
diff --git a/src/java/com/facebook/LinkBench/Link.java b/src/java/com/facebook/LinkBench/Link.java
index 5769689a..c2fdffe3 100644
--- a/src/java/com/facebook/LinkBench/Link.java
+++ b/src/java/com/facebook/LinkBench/Link.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.util.Arrays;
diff --git a/src/java/com/facebook/LinkBench/LinkBenchConfigError.java b/src/java/com/facebook/LinkBench/LinkBenchConfigError.java
index f877c86a..57523b13 100644
--- a/src/java/com/facebook/LinkBench/LinkBenchConfigError.java
+++ b/src/java/com/facebook/LinkBench/LinkBenchConfigError.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 public class LinkBenchConfigError extends RuntimeException {
diff --git a/src/java/com/facebook/LinkBench/LinkBenchDriver.java b/src/java/com/facebook/LinkBench/LinkBenchDriver.java
index 627fd99b..ecd309c7 100644
--- a/src/java/com/facebook/LinkBench/LinkBenchDriver.java
+++ b/src/java/com/facebook/LinkBench/LinkBenchDriver.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.io.File;
diff --git a/src/java/com/facebook/LinkBench/LinkBenchDriverMR.java b/src/java/com/facebook/LinkBench/LinkBenchDriverMR.java
index 3e1c4f5a..fd819257 100644
--- a/src/java/com/facebook/LinkBench/LinkBenchDriverMR.java
+++ b/src/java/com/facebook/LinkBench/LinkBenchDriverMR.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.io.DataInput;
diff --git a/src/java/com/facebook/LinkBench/LinkBenchLoad.java b/src/java/com/facebook/LinkBench/LinkBenchLoad.java
index c36c6dca..d32c1cc3 100644
--- a/src/java/com/facebook/LinkBench/LinkBenchLoad.java
+++ b/src/java/com/facebook/LinkBench/LinkBenchLoad.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.io.PrintStream;
diff --git a/src/java/com/facebook/LinkBench/LinkBenchOp.java b/src/java/com/facebook/LinkBench/LinkBenchOp.java
index 233c73b5..89436b5c 100644
--- a/src/java/com/facebook/LinkBench/LinkBenchOp.java
+++ b/src/java/com/facebook/LinkBench/LinkBenchOp.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 // Various operation types for which we want to gather stats
diff --git a/src/java/com/facebook/LinkBench/LinkBenchRequest.java b/src/java/com/facebook/LinkBench/LinkBenchRequest.java
index d0dbd088..f77389c0 100644
--- a/src/java/com/facebook/LinkBench/LinkBenchRequest.java
+++ b/src/java/com/facebook/LinkBench/LinkBenchRequest.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.io.PrintStream;
diff --git a/src/java/com/facebook/LinkBench/LinkBenchTask.java b/src/java/com/facebook/LinkBench/LinkBenchTask.java
index 5237ec47..7f26aada 100644
--- a/src/java/com/facebook/LinkBench/LinkBenchTask.java
+++ b/src/java/com/facebook/LinkBench/LinkBenchTask.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 /**
diff --git a/src/java/com/facebook/LinkBench/LinkCount.java b/src/java/com/facebook/LinkBench/LinkCount.java
index dc31f252..4a5b8103 100644
--- a/src/java/com/facebook/LinkBench/LinkCount.java
+++ b/src/java/com/facebook/LinkBench/LinkCount.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 public class LinkCount {
diff --git a/src/java/com/facebook/LinkBench/LinkStore.java b/src/java/com/facebook/LinkBench/LinkStore.java
index 06c0d93e..0530874b 100644
--- a/src/java/com/facebook/LinkBench/LinkStore.java
+++ b/src/java/com/facebook/LinkBench/LinkStore.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.io.*;
diff --git a/src/java/com/facebook/LinkBench/LinkStoreHBaseGeneralAtomicityTesting.java b/src/java/com/facebook/LinkBench/LinkStoreHBaseGeneralAtomicityTesting.java
index b22b6762..28b4f9ae 100644
--- a/src/java/com/facebook/LinkBench/LinkStoreHBaseGeneralAtomicityTesting.java
+++ b/src/java/com/facebook/LinkBench/LinkStoreHBaseGeneralAtomicityTesting.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 
 package com.facebook.LinkBench;
 
diff --git a/src/java/com/facebook/LinkBench/LinkStoreMysql.java b/src/java/com/facebook/LinkBench/LinkStoreMysql.java
index 7ffecac9..e7cd102b 100644
--- a/src/java/com/facebook/LinkBench/LinkStoreMysql.java
+++ b/src/java/com/facebook/LinkBench/LinkStoreMysql.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.io.IOException;
diff --git a/src/java/com/facebook/LinkBench/MemoryLinkStore.java b/src/java/com/facebook/LinkBench/MemoryLinkStore.java
index 8ce8de2f..d9e6c4b0 100644
--- a/src/java/com/facebook/LinkBench/MemoryLinkStore.java
+++ b/src/java/com/facebook/LinkBench/MemoryLinkStore.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.io.IOException;
diff --git a/src/java/com/facebook/LinkBench/Node.java b/src/java/com/facebook/LinkBench/Node.java
index 14afaace..b8c343c5 100644
--- a/src/java/com/facebook/LinkBench/Node.java
+++ b/src/java/com/facebook/LinkBench/Node.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.util.Arrays;
diff --git a/src/java/com/facebook/LinkBench/NodeLoader.java b/src/java/com/facebook/LinkBench/NodeLoader.java
index ed63d7b9..c74afdd5 100644
--- a/src/java/com/facebook/LinkBench/NodeLoader.java
+++ b/src/java/com/facebook/LinkBench/NodeLoader.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.io.PrintStream;
diff --git a/src/java/com/facebook/LinkBench/NodeStore.java b/src/java/com/facebook/LinkBench/NodeStore.java
index 170480e9..81982467 100644
--- a/src/java/com/facebook/LinkBench/NodeStore.java
+++ b/src/java/com/facebook/LinkBench/NodeStore.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.io.IOException;
diff --git a/src/java/com/facebook/LinkBench/Phase.java b/src/java/com/facebook/LinkBench/Phase.java
index e1ba0a3a..ef5e63ad 100644
--- a/src/java/com/facebook/LinkBench/Phase.java
+++ b/src/java/com/facebook/LinkBench/Phase.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 /**
diff --git a/src/java/com/facebook/LinkBench/RealDistribution.java b/src/java/com/facebook/LinkBench/RealDistribution.java
index 856cf962..7333fc93 100644
--- a/src/java/com/facebook/LinkBench/RealDistribution.java
+++ b/src/java/com/facebook/LinkBench/RealDistribution.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.io.File;
diff --git a/src/java/com/facebook/LinkBench/Shuffler.java b/src/java/com/facebook/LinkBench/Shuffler.java
index 0c29cc1b..b50d9c9e 100644
--- a/src/java/com/facebook/LinkBench/Shuffler.java
+++ b/src/java/com/facebook/LinkBench/Shuffler.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 
diff --git a/src/java/com/facebook/LinkBench/Timer.java b/src/java/com/facebook/LinkBench/Timer.java
index c23008b7..2e2511b3 100644
--- a/src/java/com/facebook/LinkBench/Timer.java
+++ b/src/java/com/facebook/LinkBench/Timer.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.util.Random;
diff --git a/src/java/com/facebook/LinkBench/distributions/AccessDistributions.java b/src/java/com/facebook/LinkBench/distributions/AccessDistributions.java
index f4015217..94789dba 100644
--- a/src/java/com/facebook/LinkBench/distributions/AccessDistributions.java
+++ b/src/java/com/facebook/LinkBench/distributions/AccessDistributions.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench.distributions;
 
 import java.util.Properties;
diff --git a/src/java/com/facebook/LinkBench/distributions/GeometricDistribution.java b/src/java/com/facebook/LinkBench/distributions/GeometricDistribution.java
index 4787701e..a7a7da54 100644
--- a/src/java/com/facebook/LinkBench/distributions/GeometricDistribution.java
+++ b/src/java/com/facebook/LinkBench/distributions/GeometricDistribution.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench.distributions;
 
 import java.util.Properties;
diff --git a/src/java/com/facebook/LinkBench/distributions/Harmonic.java b/src/java/com/facebook/LinkBench/distributions/Harmonic.java
index 59fa8fe9..8e153e20 100644
--- a/src/java/com/facebook/LinkBench/distributions/Harmonic.java
+++ b/src/java/com/facebook/LinkBench/distributions/Harmonic.java
@@ -40,52 +40,4 @@ public static double generalizedHarmonic(final long n, final double m) {
       }
       return value;
   }
-  
-  
-  private static final long APPROX_THRESHOLD = 100000;
-
-  // Euler Mascheroni constant
-  private static final double EULER_MASCHERONI =
-                  0.5772156649015328606065120900824024310421;
-
-  
-  /**
-   * Approximation to generalized harmonic for 0 >= m >= 1.
-   * Designed to not take more than a couple of seconds to calculate,
-   * and the have error of < 0.05%
-   * @param n
-   * @param m assume > 0 <=
-   * @return
-   */
-  public static double generalizedHarmonicApprox(final long n,
-                                                 final double m) {
-    if (n < 0) {
-      throw new IllegalArgumentException("n must be non-negative");
-    }
-    if (m < 0 || m > 1) {
-      throw new IllegalArgumentException("m = " + m + " outside " +
-                                         "range [0, 1]");
-    }
-    if (n < APPROX_THRESHOLD) {
-      // Approximation less accurate for small n, and full calculation
-      // doesn't take as long
-      return generalizedHarmonic(n, m);
-    }
-
-    if (m == 1) {
-      // Standard approximation for regular harmonic numbers
-      return Math.log(n) + EULER_MASCHERONI + 1 / (2 * n);
-    } else {
-      // Rough approximation for generalized harmonic for
-      // m >= 0 and m <= 1
-      
-      // Standard integral of 1/(n^k)
-      double integral = (1 / (1 - m)) * Math.pow(n, 1 - m);  
-
-      // Empirically derived correction factor that is good enough
-      // to get to within 0.2% or so of exact number
-      double correction = 0.58 - 1 / (1 - m);
-      return integral + correction;
-    }
-  }
 }
diff --git a/src/java/com/facebook/LinkBench/distributions/ID2Chooser.java b/src/java/com/facebook/LinkBench/distributions/ID2Chooser.java
index 6a6244c8..3aa6a2bd 100644
--- a/src/java/com/facebook/LinkBench/distributions/ID2Chooser.java
+++ b/src/java/com/facebook/LinkBench/distributions/ID2Chooser.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench.distributions;
 
 import java.util.Properties;
diff --git a/src/java/com/facebook/LinkBench/distributions/LinkDistributions.java b/src/java/com/facebook/LinkBench/distributions/LinkDistributions.java
index f0f3f746..aa5ac226 100644
--- a/src/java/com/facebook/LinkBench/distributions/LinkDistributions.java
+++ b/src/java/com/facebook/LinkBench/distributions/LinkDistributions.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench.distributions;
 
 import java.util.Properties;
diff --git a/src/java/com/facebook/LinkBench/distributions/LogNormalDistribution.java b/src/java/com/facebook/LinkBench/distributions/LogNormalDistribution.java
index 093b33f5..a264fed9 100644
--- a/src/java/com/facebook/LinkBench/distributions/LogNormalDistribution.java
+++ b/src/java/com/facebook/LinkBench/distributions/LogNormalDistribution.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench.distributions;
 
 import java.util.Properties;
diff --git a/src/java/com/facebook/LinkBench/distributions/PiecewiseLinearDistribution.java b/src/java/com/facebook/LinkBench/distributions/PiecewiseLinearDistribution.java
index a4fa1474..340be1c8 100644
--- a/src/java/com/facebook/LinkBench/distributions/PiecewiseLinearDistribution.java
+++ b/src/java/com/facebook/LinkBench/distributions/PiecewiseLinearDistribution.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench.distributions;
 
 import java.util.ArrayList;
diff --git a/src/java/com/facebook/LinkBench/distributions/ProbabilityDistribution.java b/src/java/com/facebook/LinkBench/distributions/ProbabilityDistribution.java
index 379f422e..6831b24e 100644
--- a/src/java/com/facebook/LinkBench/distributions/ProbabilityDistribution.java
+++ b/src/java/com/facebook/LinkBench/distributions/ProbabilityDistribution.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench.distributions;
 
 import java.util.Properties;
diff --git a/src/java/com/facebook/LinkBench/distributions/UniformDistribution.java b/src/java/com/facebook/LinkBench/distributions/UniformDistribution.java
index 383d3e77..145588ad 100644
--- a/src/java/com/facebook/LinkBench/distributions/UniformDistribution.java
+++ b/src/java/com/facebook/LinkBench/distributions/UniformDistribution.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench.distributions;
 
 import java.util.Properties;
diff --git a/src/java/com/facebook/LinkBench/distributions/ZipfDistribution.java b/src/java/com/facebook/LinkBench/distributions/ZipfDistribution.java
index 6d864484..03d1109f 100644
--- a/src/java/com/facebook/LinkBench/distributions/ZipfDistribution.java
+++ b/src/java/com/facebook/LinkBench/distributions/ZipfDistribution.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench.distributions;
 
 import java.util.ArrayList;
@@ -117,7 +132,7 @@ private double uncachedCalcZetan(long n) {
     double calcZetan;
     if (shape <= 1.0) {
       // use approximation
-      calcZetan = Harmonic.generalizedHarmonicApprox(n, shape);
+      calcZetan = ApproxHarmonic.generalizedHarmonic(n, shape);
     } else {
       // Can't use approximation
       // If calculation will take more than 5 or so seconds, let user know
@@ -156,7 +171,7 @@ public double cdf(long id) {
     if (id >= max) return 1.0;
     double harm;
     if (shape <= 1.0) {
-      harm = Harmonic.generalizedHarmonicApprox(id + 1 - min, shape);
+      harm = ApproxHarmonic.generalizedHarmonic(id + 1 - min, shape);
     } else {
       harm = Harmonic.generalizedHarmonic(id + 1 - min, shape);
     }
diff --git a/src/java/com/facebook/LinkBench/generators/DataGenerator.java b/src/java/com/facebook/LinkBench/generators/DataGenerator.java
index 270cf78e..0c5eb87c 100644
--- a/src/java/com/facebook/LinkBench/generators/DataGenerator.java
+++ b/src/java/com/facebook/LinkBench/generators/DataGenerator.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench.generators;
 
 import java.util.Properties;
diff --git a/src/java/com/facebook/LinkBench/generators/MotifDataGenerator.java b/src/java/com/facebook/LinkBench/generators/MotifDataGenerator.java
index 6f463b85..e5b53151 100644
--- a/src/java/com/facebook/LinkBench/generators/MotifDataGenerator.java
+++ b/src/java/com/facebook/LinkBench/generators/MotifDataGenerator.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench.generators;
 
 import java.util.Properties;
diff --git a/src/java/com/facebook/LinkBench/generators/UniformDataGenerator.java b/src/java/com/facebook/LinkBench/generators/UniformDataGenerator.java
index f3bd5cf2..2f960034 100644
--- a/src/java/com/facebook/LinkBench/generators/UniformDataGenerator.java
+++ b/src/java/com/facebook/LinkBench/generators/UniformDataGenerator.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench.generators;
 
 import java.util.Properties;
diff --git a/src/java/com/facebook/LinkBench/stats/LatencyStats.java b/src/java/com/facebook/LinkBench/stats/LatencyStats.java
index 81d30bee..788b32cb 100644
--- a/src/java/com/facebook/LinkBench/stats/LatencyStats.java
+++ b/src/java/com/facebook/LinkBench/stats/LatencyStats.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench.stats;
 
 import java.io.PrintStream;
diff --git a/src/java/com/facebook/LinkBench/stats/RunningMean.java b/src/java/com/facebook/LinkBench/stats/RunningMean.java
index 46525ab3..5c896582 100644
--- a/src/java/com/facebook/LinkBench/stats/RunningMean.java
+++ b/src/java/com/facebook/LinkBench/stats/RunningMean.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench.stats;
 
 /** 
diff --git a/src/java/com/facebook/LinkBench/stats/SampledStats.java b/src/java/com/facebook/LinkBench/stats/SampledStats.java
index a4a949f6..7514721d 100644
--- a/src/java/com/facebook/LinkBench/stats/SampledStats.java
+++ b/src/java/com/facebook/LinkBench/stats/SampledStats.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench.stats;
 
 
diff --git a/src/java/com/facebook/LinkBench/util/ClassLoadUtil.java b/src/java/com/facebook/LinkBench/util/ClassLoadUtil.java
index 2ccc70e8..635e77d3 100644
--- a/src/java/com/facebook/LinkBench/util/ClassLoadUtil.java
+++ b/src/java/com/facebook/LinkBench/util/ClassLoadUtil.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench.util;
 
 import java.lang.reflect.Constructor;
diff --git a/src/test/java/com/facebook/LinkBench/DistributionTestBase.java b/src/test/java/com/facebook/LinkBench/DistributionTestBase.java
index bd450692..9c0e2ff8 100644
--- a/src/test/java/com/facebook/LinkBench/DistributionTestBase.java
+++ b/src/test/java/com/facebook/LinkBench/DistributionTestBase.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.util.Properties;
diff --git a/src/test/java/com/facebook/LinkBench/DummyLinkStore.java b/src/test/java/com/facebook/LinkBench/DummyLinkStore.java
index b16c9da6..449478f1 100644
--- a/src/test/java/com/facebook/LinkBench/DummyLinkStore.java
+++ b/src/test/java/com/facebook/LinkBench/DummyLinkStore.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.io.IOException;
diff --git a/src/test/java/com/facebook/LinkBench/DummyLinkStoreTest.java b/src/test/java/com/facebook/LinkBench/DummyLinkStoreTest.java
index 82bdfd74..329344da 100644
--- a/src/test/java/com/facebook/LinkBench/DummyLinkStoreTest.java
+++ b/src/test/java/com/facebook/LinkBench/DummyLinkStoreTest.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.io.IOException;
diff --git a/src/test/java/com/facebook/LinkBench/GeneratedDataDump.java b/src/test/java/com/facebook/LinkBench/GeneratedDataDump.java
index 322d2c0e..d709d745 100644
--- a/src/test/java/com/facebook/LinkBench/GeneratedDataDump.java
+++ b/src/test/java/com/facebook/LinkBench/GeneratedDataDump.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.io.BufferedOutputStream;
diff --git a/src/test/java/com/facebook/LinkBench/GeomDistTest.java b/src/test/java/com/facebook/LinkBench/GeomDistTest.java
index f7cb0315..b1e941e1 100644
--- a/src/test/java/com/facebook/LinkBench/GeomDistTest.java
+++ b/src/test/java/com/facebook/LinkBench/GeomDistTest.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.util.Properties;
diff --git a/src/test/java/com/facebook/LinkBench/GraphStoreTestBase.java b/src/test/java/com/facebook/LinkBench/GraphStoreTestBase.java
index bafce6ea..ad4f17bc 100644
--- a/src/test/java/com/facebook/LinkBench/GraphStoreTestBase.java
+++ b/src/test/java/com/facebook/LinkBench/GraphStoreTestBase.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.io.IOException;
diff --git a/src/test/java/com/facebook/LinkBench/HarmonicTest.java b/src/test/java/com/facebook/LinkBench/HarmonicTest.java
index ca87b40e..1b4c9719 100644
--- a/src/test/java/com/facebook/LinkBench/HarmonicTest.java
+++ b/src/test/java/com/facebook/LinkBench/HarmonicTest.java
@@ -1,7 +1,23 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import org.junit.Test;
 
+import com.facebook.LinkBench.distributions.ApproxHarmonic;
 import com.facebook.LinkBench.distributions.Harmonic;
 
 import junit.framework.TestCase;
@@ -30,13 +46,15 @@ public void testApprox() {
       for (double shape: shapes) {
         double exact = Harmonic.generalizedHarmonic(n, shape);
         long start = System.currentTimeMillis();
-        double approx = Harmonic.generalizedHarmonicApprox(n, shape);
+        double approx = ApproxHarmonic.generalizedHarmonic(n, shape);
         long end = System.currentTimeMillis();
-        System.err.format("generalizedHarmonicApprox(%d, %f) took %.3fs\n", n, shape, (end - start) / 1000.0);
+        System.err.format("ApproxHarmonic.generalizedHarmonic(%d, %f) " +
+                          "took %.3fs\n", n, shape, (end - start) / 1000.0);
         double err = approx - exact;
         double errPc = (err / exact) * 100.0;
-        System.err.format("generalizedHarmonicApprox(%d, %f) = %f.  exact=%f err=%f err%%=%.2f\n", n,
-            shape, approx, exact, err, errPc);
+        System.err.format("ApproxHarmonic.generalizedHarmonic(%d, %f) = %f. " +
+                          "exact=%f err=%f err%%=%.2f\n", n, shape, approx,
+                           exact, err, errPc);
         double errThresh = 0.05;
         assertTrue(String.format("Err%%=%.3f must be < 0.05%%", Math.abs(errPc)),
                                  Math.abs(errPc) < errThresh);
diff --git a/src/test/java/com/facebook/LinkBench/ID2ChooserTest.java b/src/test/java/com/facebook/LinkBench/ID2ChooserTest.java
index 3bd5082a..b1d04d0a 100644
--- a/src/test/java/com/facebook/LinkBench/ID2ChooserTest.java
+++ b/src/test/java/com/facebook/LinkBench/ID2ChooserTest.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.util.HashMap;
diff --git a/src/test/java/com/facebook/LinkBench/InvertibleShufflerTest.java b/src/test/java/com/facebook/LinkBench/InvertibleShufflerTest.java
index e74fff4d..cf95a826 100644
--- a/src/test/java/com/facebook/LinkBench/InvertibleShufflerTest.java
+++ b/src/test/java/com/facebook/LinkBench/InvertibleShufflerTest.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.util.Arrays;
diff --git a/src/test/java/com/facebook/LinkBench/LinkStoreTestBase.java b/src/test/java/com/facebook/LinkBench/LinkStoreTestBase.java
index f919ee44..6339b3c0 100644
--- a/src/test/java/com/facebook/LinkBench/LinkStoreTestBase.java
+++ b/src/test/java/com/facebook/LinkBench/LinkStoreTestBase.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.io.IOException;
diff --git a/src/test/java/com/facebook/LinkBench/LogNormalTest.java b/src/test/java/com/facebook/LinkBench/LogNormalTest.java
index 30514383..d6a82b56 100644
--- a/src/test/java/com/facebook/LinkBench/LogNormalTest.java
+++ b/src/test/java/com/facebook/LinkBench/LogNormalTest.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.util.Properties;
diff --git a/src/test/java/com/facebook/LinkBench/MemoryGraphStoreTest.java b/src/test/java/com/facebook/LinkBench/MemoryGraphStoreTest.java
index dabb7c35..e689e678 100644
--- a/src/test/java/com/facebook/LinkBench/MemoryGraphStoreTest.java
+++ b/src/test/java/com/facebook/LinkBench/MemoryGraphStoreTest.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.io.IOException;
diff --git a/src/test/java/com/facebook/LinkBench/MemoryLinkStoreTest.java b/src/test/java/com/facebook/LinkBench/MemoryLinkStoreTest.java
index 95ccc505..ffa34c7d 100644
--- a/src/test/java/com/facebook/LinkBench/MemoryLinkStoreTest.java
+++ b/src/test/java/com/facebook/LinkBench/MemoryLinkStoreTest.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.io.IOException;
diff --git a/src/test/java/com/facebook/LinkBench/MemoryNodeStoreTest.java b/src/test/java/com/facebook/LinkBench/MemoryNodeStoreTest.java
index 9e9839bc..55fcbd77 100644
--- a/src/test/java/com/facebook/LinkBench/MemoryNodeStoreTest.java
+++ b/src/test/java/com/facebook/LinkBench/MemoryNodeStoreTest.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.io.IOException;
diff --git a/src/test/java/com/facebook/LinkBench/MySqlGraphStoreTest.java b/src/test/java/com/facebook/LinkBench/MySqlGraphStoreTest.java
index 3533bf11..b02b4cbd 100644
--- a/src/test/java/com/facebook/LinkBench/MySqlGraphStoreTest.java
+++ b/src/test/java/com/facebook/LinkBench/MySqlGraphStoreTest.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.io.IOException;
diff --git a/src/test/java/com/facebook/LinkBench/MySqlLinkStoreTest.java b/src/test/java/com/facebook/LinkBench/MySqlLinkStoreTest.java
index d969d716..7e62680d 100644
--- a/src/test/java/com/facebook/LinkBench/MySqlLinkStoreTest.java
+++ b/src/test/java/com/facebook/LinkBench/MySqlLinkStoreTest.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.io.IOException;
diff --git a/src/test/java/com/facebook/LinkBench/MySqlNodeStoreTest.java b/src/test/java/com/facebook/LinkBench/MySqlNodeStoreTest.java
index 17d6aad8..e0bc97c0 100644
--- a/src/test/java/com/facebook/LinkBench/MySqlNodeStoreTest.java
+++ b/src/test/java/com/facebook/LinkBench/MySqlNodeStoreTest.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.io.IOException;
diff --git a/src/test/java/com/facebook/LinkBench/MySqlTestConfig.java b/src/test/java/com/facebook/LinkBench/MySqlTestConfig.java
index 40ccea0c..51d2f21d 100644
--- a/src/test/java/com/facebook/LinkBench/MySqlTestConfig.java
+++ b/src/test/java/com/facebook/LinkBench/MySqlTestConfig.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.sql.Connection;
diff --git a/src/test/java/com/facebook/LinkBench/NodeStoreTestBase.java b/src/test/java/com/facebook/LinkBench/NodeStoreTestBase.java
index ab1b4c45..57cac39b 100644
--- a/src/test/java/com/facebook/LinkBench/NodeStoreTestBase.java
+++ b/src/test/java/com/facebook/LinkBench/NodeStoreTestBase.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.io.IOException;
diff --git a/src/test/java/com/facebook/LinkBench/PiecewiseDistTest.java b/src/test/java/com/facebook/LinkBench/PiecewiseDistTest.java
index 94791396..97ff42ae 100644
--- a/src/test/java/com/facebook/LinkBench/PiecewiseDistTest.java
+++ b/src/test/java/com/facebook/LinkBench/PiecewiseDistTest.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.util.ArrayList;
diff --git a/src/test/java/com/facebook/LinkBench/TestAccessDistribution.java b/src/test/java/com/facebook/LinkBench/TestAccessDistribution.java
index 6696ce2c..46f20e65 100644
--- a/src/test/java/com/facebook/LinkBench/TestAccessDistribution.java
+++ b/src/test/java/com/facebook/LinkBench/TestAccessDistribution.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.io.File;
diff --git a/src/test/java/com/facebook/LinkBench/TestDataGen.java b/src/test/java/com/facebook/LinkBench/TestDataGen.java
index 16ba67aa..226046c2 100644
--- a/src/test/java/com/facebook/LinkBench/TestDataGen.java
+++ b/src/test/java/com/facebook/LinkBench/TestDataGen.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.io.ByteArrayOutputStream;
diff --git a/src/test/java/com/facebook/LinkBench/TestRealDistribution.java b/src/test/java/com/facebook/LinkBench/TestRealDistribution.java
index 7d434b3d..ce0c985f 100644
--- a/src/test/java/com/facebook/LinkBench/TestRealDistribution.java
+++ b/src/test/java/com/facebook/LinkBench/TestRealDistribution.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.io.File;
diff --git a/src/test/java/com/facebook/LinkBench/TestStats.java b/src/test/java/com/facebook/LinkBench/TestStats.java
index 838f3c2a..2f4f6f90 100644
--- a/src/test/java/com/facebook/LinkBench/TestStats.java
+++ b/src/test/java/com/facebook/LinkBench/TestStats.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import junit.framework.AssertionFailedError;
diff --git a/src/test/java/com/facebook/LinkBench/TimerTest.java b/src/test/java/com/facebook/LinkBench/TimerTest.java
index be1ec8d9..0a3ce3a4 100644
--- a/src/test/java/com/facebook/LinkBench/TimerTest.java
+++ b/src/test/java/com/facebook/LinkBench/TimerTest.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.util.Random;
diff --git a/src/test/java/com/facebook/LinkBench/UniformDistTest.java b/src/test/java/com/facebook/LinkBench/UniformDistTest.java
index 14b244e4..297e94e7 100644
--- a/src/test/java/com/facebook/LinkBench/UniformDistTest.java
+++ b/src/test/java/com/facebook/LinkBench/UniformDistTest.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.util.Random;
diff --git a/src/test/java/com/facebook/LinkBench/ZipfDistTest.java b/src/test/java/com/facebook/LinkBench/ZipfDistTest.java
index 3bea823a..c4a069e3 100644
--- a/src/test/java/com/facebook/LinkBench/ZipfDistTest.java
+++ b/src/test/java/com/facebook/LinkBench/ZipfDistTest.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2012, Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.facebook.LinkBench;
 
 import java.util.Properties;