Merge pull request #392 from apache/RemoveExtraEmptyLines

This does not affect any code, This is a cosmetic fix to remove extra

.asf.yaml

@@ -1,4 +1,3 @@
 github:
   homepage: https://datasketches.apache.org
-  collaborators:
-    - will-lauer
+  collaborators:

src/main/java/org/apache/datasketches/BinarySearch.java

@@ -26,7 +26,6 @@
  */
 public final class BinarySearch {
 
-
   /**
    * Binary Search for the index of the exact float value in the given search range.
    * If -1 is returned there are no values in the search range that equals the given value.

src/main/java/org/apache/datasketches/InequalitySearch.java

@@ -524,7 +524,6 @@ String desc(final long[] arr, final int low, final int high, final long v, final
    */
   abstract int compare(long[] arr, int a, int b, long v);
 
-
   /**
    * If the compare operation returns 0, which means "found", this returns the index of the
    * found value that satisfies the selected criteria.
@@ -558,7 +557,6 @@ String desc(final long[] arr, final int low, final int high, final long v, final
    */
   abstract int getIndex(long[] arr, int a, int b, long v);
 
-
   /**
    * Called to resolve what to do if not found. In the search algorithm this occurs when the
    * <i>lo</i> and <i>hi</i> indices become inverted at the ends of the array.

src/main/java/org/apache/datasketches/SetOperationCornerCases.java

@@ -100,7 +100,6 @@ public String getActionDescription() {
     }
   }
 
-
   public enum CornerCase {
     Empty_Empty(055, "A{ 1.0, 0, T} ; B{ 1.0, 0, T}",
         IntersectAction.EMPTY_1_0_T, AnotbAction.EMPTY_1_0_T, UnionAction.EMPTY_1_0_T),

src/main/java/org/apache/datasketches/Util.java

@@ -668,7 +668,6 @@ public static int pwr2LawPrev(final int ppo, final int curPoint) {
     return prev;
   }
 
-
   /**
    * The log base 2 of the value
    * @param value the given value

src/main/java/org/apache/datasketches/cpc/CompressionCharacterization.java

@@ -67,7 +67,6 @@ public class CompressionCharacterization {
   private CompressedState[] compressedStates2;
   private CpcSketch[] unCompressedSketches;
 
-
   public CompressionCharacterization(
       final int lgMinK,
       final int lgMaxK,

src/main/java/org/apache/datasketches/cpc/CpcCompression.java

@@ -832,7 +832,6 @@ private static long floorLog2ofLong(final long x) { //not a good name
     }
   }
 
-
   private static long divideBy32RoundingUp(final long x) {
     final long tmp = x >>> 5;
     return ((tmp << 5) == x) ? tmp : tmp + 1;

src/main/java/org/apache/datasketches/cpc/CpcSketch.java

@@ -649,7 +649,6 @@ else if (col < (sketch.windowOffset + 8)) { // track the 8 bits inside the windo
     }
   }
 
-
   //also used in test
   static CpcSketch uncompress(final CompressedState source, final long seed) {
     checkSeedHashes(computeSeedHash(seed), source.seedHash);

src/main/java/org/apache/datasketches/cpc/QuickMergingValidation.java

@@ -134,7 +134,6 @@ void quickTest(final int lgK, final long cA, final long cB) {
         updA_mS, updB_mS, mrgA_mS, mrgB_mS, rslt_mS);
   }
 
-
   private void printf(final String format, final Object ... args) {
     if (printStream != null) { printStream.printf(format, args); }
     if (printWriter != null) { printWriter.printf(format, args); }

src/main/java/org/apache/datasketches/cpc/StreamingValidation.java

@@ -50,7 +50,6 @@ public class StreamingValidation {
   private PrintStream printStream;
   private PrintWriter printWriter;
 
-
   //sketches
   private CpcSketch sketch = null;
   private BitMatrix matrix = null;

src/main/java/org/apache/datasketches/hash/MurmurHash3.java

@@ -190,7 +190,6 @@ public static long[] hash(final int[] key, final int offsetInts, final int lengt
     return hashState.finalMix128(k1, k2, lengthInts << 2); //convert to bytes
   }
 
-
   //--Hash of char[]-------------------------------------------------------
   /**
    * Hash the given char[] array.
@@ -219,7 +218,6 @@ public static long[] hash(final char[] key, final int offsetChars, final int len
     Util.checkBounds(offsetChars, lengthChars, arrLen);
     final HashState hashState = new HashState(seed, seed);
 
-
     // Number of full 128-bit blocks of 8 chars.
     // Possible exclusion of a remainder of up to 7 chars.
     final int nblocks = lengthChars >>> 3; //chars / 8

src/main/java/org/apache/datasketches/hll/BaseHllSketch.java

@@ -400,6 +400,4 @@ private static final int coupon(final long[] hash) {
     return (value << KEY_BITS_26) | addr26;
   }
 
-
-
 }

src/main/java/org/apache/datasketches/hll/CompositeInterpolationXTable.java

@@ -32,7 +32,6 @@ final class CompositeInterpolationXTable {
   static final int[] yStrides =
     {1, 2, 3, 5, 10, 20, 40, 80, 160, 320, 640, 1280, 2560, 5120, 10240, 20480, 40960, 81920 };
 
-
   static final double xArrs[][] = {
   // log K = 4
   {

src/main/java/org/apache/datasketches/hll/CurMode.java

@@ -38,5 +38,4 @@ public static CurMode fromOrdinal(final int ordinal) {
     return values[ordinal];
   }
 
-
 }

src/main/java/org/apache/datasketches/hll/Hll6Array.java

@@ -34,7 +34,6 @@
  */
 class Hll6Array extends HllArray {
 
-
   /**
    * Standard constructor for new instance
    * @param lgConfigK the configured Lg K
@@ -134,8 +133,6 @@ private static final int get6Bit(final byte[] arr, final int offsetBytes, final
     return (byte) ((getShortLE(arr, byteIdx) >>> shift) & 0X3F);
   }
 
-
-
   //ITERATOR
 
   private final class HeapHll6Iterator extends HllPairIterator {

src/main/java/org/apache/datasketches/hll/HllArray.java

@@ -253,7 +253,6 @@ byte[] toUpdatableByteArray() {
     return ToByteArrayImpl.toHllByteArray(this, false);
   }
 
-
   //used by heapify by all Heap HLL
   static final void extractCommonHll(final Memory srcMem, final HllArray hllArray) {
     hllArray.putOutOfOrder(extractOooFlag(srcMem));

src/main/java/org/apache/datasketches/hll/HllSketch.java

@@ -269,8 +269,6 @@ public static final HllSketch wrap(final Memory srcMem) {
     return directSketch;
   }
 
-
-
   /**
    * Return a copy of this sketch onto the Java heap.
    * @return a copy of this sketch onto the Java heap.

src/main/java/org/apache/datasketches/quantiles/DirectUpdateDoublesSketch.java

@@ -56,7 +56,6 @@
 final class DirectUpdateDoublesSketch extends DirectUpdateDoublesSketchR {
   MemoryRequestServer memReqSvr = null;
 
-
   private DirectUpdateDoublesSketch(final int k) {
     super(k); //Checks k
   }

src/main/java/org/apache/datasketches/quantiles/DoublesPmfCdfImpl.java

@@ -114,7 +114,6 @@ static void bilinearTimeIncrementHistogramCounters(final DoublesBufferAccessor s
     }
   }
 
-
   /**
    * This one does a linear time simultaneous walk of the samples and splitPoints. Because this
    * internal procedure is called multiple times, we require the caller to ensure these 3 properties:

src/main/java/org/apache/datasketches/quantiles/DoublesUnion.java

@@ -106,7 +106,6 @@ public static DoublesUnion wrap(final WritableMemory mem) {
    */
   public abstract int getEffectiveK();
 
-
   /**
    * Iterative union operation, which means this method can be repeatedly called.
    * Merges the given sketch into this union object.

src/main/java/org/apache/datasketches/quantiles/ItemsMergeImpl.java

@@ -306,7 +306,6 @@ private static <T> void blockyTandemMergeSortRecursion(final T[] keySrc, final l
                 arrStart1, comparator); // which will be arrStart3
   }
 
-
   /**
    *  Performs two merges in tandem. One of them provides the sort keys
    *  while the other one passively undergoes the same data motion.

src/main/java/org/apache/datasketches/quantiles/ItemsSketch.java

@@ -612,7 +612,6 @@ public static String toString(final Memory mem) {
     return PreambleUtil.toString(mem, false);
   }
 
-
   /**
    * From an existing sketch, this creates a new sketch that can have a smaller value of K.
    * The original sketch is not modified.

src/main/java/org/apache/datasketches/quantiles/PreambleUtil.java

@@ -105,7 +105,6 @@ private PreambleUtil() {}
 
   // ###### TO HERE.
 
-
   // STRINGS
   /**
    * Returns a human readable string summary of the internal state of the given byte array.

src/main/java/org/apache/datasketches/req/ReqSerDe.java

@@ -31,9 +31,8 @@
 import org.apache.datasketches.memory.WritableBuffer;
 import org.apache.datasketches.memory.WritableMemory;
 
-
 /**
- * This class handles serialization and desserialization.
+ * This class handles serialization and deserialization.
  *
  * <p>ReqSketch SERIALIZATION FORMAT.</p>
  *

src/main/java/org/apache/datasketches/req/ReqSketch.java

@@ -26,7 +26,6 @@
 import org.apache.datasketches.SketchesArgumentException;
 import org.apache.datasketches.memory.Memory;
 
-
 /**
  * This Relative Error Quantiles Sketch is the Java implementation based on the paper
  * "Relative Error Streaming Quantiles", https://arxiv.org/abs/2004.01668, and loosely derived from

src/main/java/org/apache/datasketches/sampling/ReservoirItemsUnion.java

@@ -427,7 +427,6 @@ private void twoWayMergeInternalWeighted(final ReservoirItemsSketch<T> source) {
       } // end of inlined weight update
     } // end of loop over source samples
 
-
     // targetTotal was fractional but should now be an integer again. Could validate with low
     // tolerance, but for now just round to check.
     final long checkN = (long) Math.floor(0.5 + targetTotal);

src/main/java/org/apache/datasketches/sampling/ReservoirLongsUnion.java

@@ -379,7 +379,6 @@ private void twoWayMergeInternalWeighted(final ReservoirLongsSketch source) {
       } // end of inlined weight update
     } // end of loop over source samples
 
-
     // targetTotal was fractional but should now be an integer again. Could validate with
     // low tolerance, but for now just round to check.
     final long checkN = (long) Math.floor(0.5 + targetTotal);

src/main/java/org/apache/datasketches/sampling/SamplingUtil.java

@@ -37,7 +37,6 @@ final class SamplingUtil {
    */
   private static final double DEFAULT_KAPPA = 2.0;
 
-
   private SamplingUtil() {}
 
   /**

src/main/java/org/apache/datasketches/theta/AnotBimpl.java

@@ -135,7 +135,6 @@ public CompactSketch aNotB(final Sketch skA, final Sketch skB, final boolean dst
     final long[] hashArrA = getHashArrA(skA);
     final int countA = hashArrA.length;
 
-
     //process B
     final long[] hashArrOut = getResultHashArr(minThetaLong, countA, hashArrA, skB); //out is clone
     final int countOut = hashArrOut.length;

src/main/java/org/apache/datasketches/theta/ConcurrentBackgroundThetaPropagation.java

@@ -39,15 +39,13 @@ class ConcurrentBackgroundThetaPropagation implements Runnable {
   // local buffer.  Updated when the propagation completes.
   private final AtomicBoolean localPropagationInProgress;
 
-
   // Sketch to be propagated to shared sketch. Can be null if only a single hash is propagated
   private final Sketch sketchIn;
 
   // Hash of the datum to be propagated to shared sketch. Can be ConcurrentSharedThetaSketch.NOT_SINGLE_HASH
   // if the data is propagated through a sketch.
   private final long singleHash;
 
-
   // The propagation epoch. The data can be propagated only within the context of this epoch.
   // The data should not be propagated if this epoch is not equal to the
   // shared sketch epoch.

src/main/java/org/apache/datasketches/theta/ConcurrentHeapThetaBuffer.java

@@ -220,5 +220,4 @@ UpdateReturnState hashUpdate(final long hash) {
     return state;
   }
 
-
 }

src/main/java/org/apache/datasketches/theta/DirectQuickSelectSketchR.java

@@ -89,7 +89,6 @@ static DirectQuickSelectSketchR readOnlyWrap(final Memory srcMem, final long see
     return dqssr;
   }
 
-
   /**
    * Fast-wrap a sketch around the given source Memory containing sketch data that originated from
    * this sketch.  This does NO validity checking of the given Memory.
@@ -239,8 +238,6 @@ WritableMemory getMemory() {
     return wmem_;
   }
 
-
-
   @Override
   short getSeedHash() {
     return (short) PreambleUtil.extractSeedHash(wmem_);

src/main/java/org/apache/datasketches/theta/SetOperationBuilder.java

@@ -104,8 +104,6 @@ public int getLgNominalEntries() {
     return bLgNomLongs;
   }
 
-
-
   /**
    * Sets the long seed value that is require by the hashing function.
    * @param seed <a href="{@docRoot}/resources/dictionary.html#seed">See seed</a>
@@ -286,7 +284,6 @@ public AnotB buildANotB() {
     return (AnotB) build(Family.A_NOT_B);
   }
 
-
   @Override
   public String toString() {
     final StringBuilder sb = new StringBuilder();

src/main/java/org/apache/datasketches/theta/SingleItemSketch.java

@@ -90,7 +90,6 @@ static SingleItemSketch heapify(final Memory srcMem, final short expectedSeedHas
     throw new SketchesArgumentException("Input Memory is not a SingleItemSketch.");
   }
 
-
   @Override
   public CompactSketch compact(final boolean dstOrdered, final WritableMemory dstMem) {
     if (dstMem == null) { return this; }

src/main/java/org/apache/datasketches/theta/Sketch.java

@@ -47,7 +47,6 @@
 public abstract class Sketch {
   static final int DEFAULT_LG_RESIZE_FACTOR = 3;   //Unique to Heap
 
-
   Sketch() {}
 
   //public static factory constructor-type methods

src/main/java/org/apache/datasketches/theta/Union.java

@@ -31,7 +31,6 @@
  */
 public abstract class Union extends SetOperation {
 
-
   /**
    * Returns the number of storage bytes required for this union in its current state.
    *
@@ -113,7 +112,6 @@ public CompactSketch union(final Sketch sketchA, final Sketch sketchB) {
   public abstract CompactSketch union(Sketch sketchA, Sketch sketchB, boolean dstOrdered,
       WritableMemory dstMem);
 
-
   /**
    * Perform a Union operation with <i>this</i> union and the given on-heap sketch of the Theta Family.
    * This method is not valid for the older SetSketch, which was prior to Open Source (August, 2015).

src/main/java/org/apache/datasketches/tuple/Sketch.java

@@ -23,7 +23,6 @@
 
 import org.apache.datasketches.BinomialBoundsN;
 
-
 /**
  * This is an equivalent to org.apache.datasketches.theta.Sketch with
  * addition of a user-defined Summary object associated with every unique entry

src/main/java/org/apache/datasketches/tuple/Util.java

@@ -31,7 +31,6 @@
 
 import org.apache.datasketches.SketchesArgumentException;
 
-
 /**
  * Common utility functions for Tuples
  */
@@ -162,5 +161,4 @@ public static <S extends Summary> S[] newSummaryArray(final S[] summaryArr, fina
     return tmpSummaryArr;
   }
 
-
 }

src/main/java/org/apache/datasketches/tuple/arrayofdoubles/ArrayOfDoublesAnotBImpl.java

@@ -37,7 +37,6 @@