HBASE-27230 RegionServer should be aborted when WAL.sync throws Timeo… (

#4641)

Signed-off-by: Duo Zhang <zhangduo@apache.org>

hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java

@@ -153,6 +153,7 @@
 import org.apache.hadoop.hbase.regionserver.throttle.NoLimitThroughputController;
 import org.apache.hadoop.hbase.regionserver.throttle.StoreHotnessProtector;
 import org.apache.hadoop.hbase.regionserver.throttle.ThroughputController;
+import org.apache.hadoop.hbase.regionserver.wal.WALSyncTimeoutIOException;
 import org.apache.hadoop.hbase.regionserver.wal.WALUtil;
 import org.apache.hadoop.hbase.replication.ReplicationUtils;
 import org.apache.hadoop.hbase.replication.regionserver.ReplicationObserver;
@@ -1367,7 +1368,9 @@ public RegionInfo getRegionInfo() {
     return this.fs.getRegionInfo();
   }
 
-  /** Returns Instance of {@link RegionServerServices} used by this HRegion. Can be null. */
+  /**
+   * Returns Instance of {@link RegionServerServices} used by this HRegion. Can be null.
+   */
   RegionServerServices getRegionServerServices() {
     return this.rsServices;
   }
@@ -2863,7 +2866,7 @@ private boolean writeCanNotFlushMarkerToWAL(WriteEntry flushOpSeqIdMVCCEntry, WA
     if (sink != null && !writeFlushWalMarker) {
       /**
        * Here for replication to secondary region replica could use {@link FlushAction#CANNOT_FLUSH}
-       * to recover writeFlushWalMarker is false, we create {@link WALEdit} for
+       * to recover when writeFlushWalMarker is false, we create {@link WALEdit} for
        * {@link FlushDescriptor} and attach the {@link RegionReplicationSink#add} to the
        * flushOpSeqIdMVCCEntry,see HBASE-26960 for more details.
        */
@@ -3694,7 +3697,7 @@ public void doPostOpCleanupForMiniBatch(
      * @param familyMap Map of Cells by family
      */
     protected void applyFamilyMapToMemStore(Map<byte[], List<Cell>> familyMap,
-      MemStoreSizing memstoreAccounting) throws IOException {
+      MemStoreSizing memstoreAccounting) {
       for (Map.Entry<byte[], List<Cell>> e : familyMap.entrySet()) {
         byte[] family = e.getKey();
         List<Cell> cells = e.getValue();
@@ -5231,7 +5234,7 @@ public void setReadsEnabled(boolean readsEnabled) {
    *              scenario but that do not make sense otherwise.
    */
   private void applyToMemStore(HStore store, List<Cell> cells, boolean delta,
-    MemStoreSizing memstoreAccounting) throws IOException {
+    MemStoreSizing memstoreAccounting) {
     // Any change in how we update Store/MemStore needs to also be done in other applyToMemStore!!!!
     boolean upsert = delta && store.getColumnFamilyDescriptor().getMaxVersions() == 1;
     if (upsert) {
@@ -8047,6 +8050,19 @@ private WriteEntry doWALAppend(WALEdit walEdit, BatchOperation<?> batchOp,
       if (walKey.getWriteEntry() != null) {
         mvcc.complete(walKey.getWriteEntry());
       }
+
+      /**
+       * If {@link WAL#sync} get a timeout exception, the only correct way is to abort the region
+       * server, as the design of {@link WAL#sync}, is to succeed or die, there is no 'failure'. It
+       * is usually not a big deal is because we set a very large default value(5 minutes) for
+       * {@link AbstractFSWAL#WAL_SYNC_TIMEOUT_MS}, usually the WAL system will abort the region
+       * server if it can not finish the sync within 5 minutes.
+       */
+      if (ioe instanceof WALSyncTimeoutIOException) {
+        if (rsServices != null) {
+          rsServices.abort("WAL sync timeout,forcing server shutdown", ioe);
+        }
+      }
       throw ioe;
     }
   }
@@ -8057,7 +8073,7 @@ private WriteEntry doWALAppend(WALEdit walEdit, BatchOperation<?> batchOp,
    */
   private void attachRegionReplicationInWALAppend(BatchOperation<?> batchOp,
     MiniBatchOperationInProgress<Mutation> miniBatchOp, WALKeyImpl walKey, WALEdit walEdit,
-    WriteEntry writeEntry) throws IOException {
+    WriteEntry writeEntry) {
     if (!regionReplicationSink.isPresent()) {
       return;
     }
@@ -8086,7 +8102,7 @@ private void attachRegionReplicationInWALAppend(BatchOperation<?> batchOp,
    * replica.
    */
   private void doAttachReplicateRegionReplicaAction(WALKeyImpl walKey, WALEdit walEdit,
-    WriteEntry writeEntry) throws IOException {
+    WriteEntry writeEntry) {
     if (walEdit == null || walEdit.isEmpty()) {
       return;
     }

hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HStore.java

@@ -1880,8 +1880,7 @@ public long getSmallestReadPoint() {
    * across all of them.
    * @param readpoint readpoint below which we can safely remove duplicate KVs
    */
-  public void upsert(Iterable<Cell> cells, long readpoint, MemStoreSizing memstoreSizing)
-    throws IOException {
+  public void upsert(Iterable<Cell> cells, long readpoint, MemStoreSizing memstoreSizing) {
     this.storeEngine.readLock();
     try {
       this.memstore.upsert(cells, readpoint, memstoreSizing);

hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.java

@@ -142,7 +142,7 @@ public abstract class AbstractFSWAL<W extends WriterBase> implements WAL {
     "hbase.regionserver.wal.slowsync.roll.interval.ms";
   protected static final int DEFAULT_SLOW_SYNC_ROLL_INTERVAL_MS = 60 * 1000; // in ms, 1 minute
 
-  protected static final String WAL_SYNC_TIMEOUT_MS = "hbase.regionserver.wal.sync.timeout";
+  public static final String WAL_SYNC_TIMEOUT_MS = "hbase.regionserver.wal.sync.timeout";
   protected static final int DEFAULT_WAL_SYNC_TIMEOUT_MS = 5 * 60 * 1000; // in ms, 5min
 
   public static final String WAL_ROLL_MULTIPLIER = "hbase.regionserver.logroll.multiplier";
@@ -881,7 +881,7 @@ protected final void blockOnSync(SyncFuture syncFuture) throws IOException {
         }
       }
     } catch (TimeoutIOException tioe) {
-      throw tioe;
+      throw new WALSyncTimeoutIOException(tioe);
     } catch (InterruptedException ie) {
       LOG.warn("Interrupted", ie);
       throw convertInterruptedExceptionToIOException(ie);

hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/wal/WALSyncTimeoutIOException.java

@@ -0,0 +1,48 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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 org.apache.hadoop.hbase.regionserver.wal;
+
+import org.apache.hadoop.hbase.HBaseIOException;
+import org.apache.hadoop.hbase.wal.WAL;
+import org.apache.yetus.audience.InterfaceAudience;
+
+/**
+ * Thrown when {@link WAL#sync} timeout.
+ */
+@InterfaceAudience.Private
+public class WALSyncTimeoutIOException extends HBaseIOException {
+
+  private static final long serialVersionUID = 5067699288291906985L;
+
+  public WALSyncTimeoutIOException() {
+    super();
+  }
+
+  public WALSyncTimeoutIOException(String message, Throwable cause) {
+    super(message, cause);
+  }
+
+  public WALSyncTimeoutIOException(String message) {
+    super(message);
+  }
+
+  public WALSyncTimeoutIOException(Throwable cause) {
+    super(cause);
+  }
+
+}

hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/wal/WALUtil.java

@@ -176,6 +176,12 @@ private static WALKeyImpl doFullMarkerAppendTransaction(final WAL wal,
       if (walKey.getWriteEntry() != null) {
         mvcc.complete(walKey.getWriteEntry());
       }
+      /**
+       * Here we do not abort the RegionServer for {@link WALSyncTimeoutIOException} as
+       * {@link HRegion#doWALAppend} does,because WAL Marker just records the internal state and
+       * seems it is no need to always abort the RegionServer when {@link WAL#sync} timeout,it is
+       * the internal state transition that determines whether RegionServer is aborted or not.
+       */
       throw ioe;
     }
     return walKey;

hbase-server/src/main/java/org/apache/hadoop/hbase/wal/AsyncFSWALProvider.java

@@ -62,9 +62,15 @@ void init(FileSystem fs, Path path, Configuration c, boolean overwritable, long
       StreamSlowMonitor monitor) throws IOException, CommonFSUtils.StreamLacksCapabilityException;
   }
 
-  private EventLoopGroup eventLoopGroup;
+  /**
+   * Protected visibility for used in tests.
+   */
+  protected EventLoopGroup eventLoopGroup;
 
-  private Class<? extends Channel> channelClass;
+  /**
+   * Protected visibility for used in tests.
+   */
+  protected Class<? extends Channel> channelClass;
 
   @Override
   protected AsyncFSWAL createWAL() throws IOException {

hbase-server/src/main/java/org/apache/hadoop/hbase/wal/WAL.java

@@ -27,6 +27,7 @@
 import org.apache.hadoop.hbase.regionserver.wal.FailedLogCloseException;
 import org.apache.hadoop.hbase.regionserver.wal.WALActionsListener;
 import org.apache.hadoop.hbase.regionserver.wal.WALCoprocessorHost;
+import org.apache.hadoop.hbase.regionserver.wal.WALSyncTimeoutIOException;
 import org.apache.hadoop.hbase.replication.regionserver.WALFileLengthProvider;
 import org.apache.yetus.audience.InterfaceAudience;
 import org.apache.yetus.audience.InterfaceStability;
@@ -133,18 +134,21 @@ void updateStore(byte[] encodedRegionName, byte[] familyName, Long sequenceid,
 
   /**
    * Sync what we have in the WAL.
+   * @throws when timeout, it would throw {@link WALSyncTimeoutIOException}.
    */
   void sync() throws IOException;
 
   /**
    * Sync the WAL if the txId was not already sync'd.
    * @param txid Transaction id to sync to.
+   * @throws when timeout, it would throw {@link WALSyncTimeoutIOException}.
    */
   void sync(long txid) throws IOException;
 
   /**
    * @param forceSync Flag to force sync rather than flushing to the buffer. Example - Hadoop hflush
    *                  vs hsync.
+   * @throws when timeout, it would throw {@link WALSyncTimeoutIOException}.
    */
   default void sync(boolean forceSync) throws IOException {
     sync();
@@ -154,6 +158,7 @@ default void sync(boolean forceSync) throws IOException {
    * @param txid      Transaction id to sync to.
    * @param forceSync Flag to force sync rather than flushing to the buffer. Example - Hadoop hflush
    *                  vs hsync.
+   * @throws when timeout, it would throw {@link WALSyncTimeoutIOException}.
    */
   default void sync(long txid, boolean forceSync) throws IOException {
     sync(txid);

hbase-server/src/main/java/org/apache/hadoop/hbase/wal/WALFactory.java

@@ -17,6 +17,7 @@
  */
 package org.apache.hadoop.hbase.wal;
 
+import com.google.errorprone.annotations.RestrictedApi;
 import java.io.IOException;
 import java.io.InterruptedIOException;
 import java.util.List;
@@ -505,4 +506,10 @@ public final WALProvider getMetaWALProvider() {
   public ExcludeDatanodeManager getExcludeDatanodeManager() {
     return excludeDatanodeManager;
   }
+
+  @RestrictedApi(explanation = "Should only be called in tests", link = "",
+      allowedOnPath = ".*/src/test/.*")
+  public String getFactoryId() {
+    return this.factoryId;
+  }
 }

hbase-server/src/test/java/org/apache/hadoop/hbase/master/TestWarmupRegion.java

@@ -21,10 +21,8 @@
 import static org.junit.Assert.assertTrue;
 
 import java.io.IOException;
-import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hbase.HBaseClassTestRule;
 import org.apache.hadoop.hbase.HBaseTestingUtil;
-import org.apache.hadoop.hbase.SingleProcessHBaseCluster;
 import org.apache.hadoop.hbase.TableName;
 import org.apache.hadoop.hbase.Waiter;
 import org.apache.hadoop.hbase.client.CompactionState;
@@ -54,7 +52,6 @@
  * named for the method and does its stuff against that.
  */
 @Category({ MasterTests.class, LargeTests.class })
-@SuppressWarnings("deprecation")
 public class TestWarmupRegion {
 
   @ClassRule
@@ -66,20 +63,17 @@ public class TestWarmupRegion {
   protected final static HBaseTestingUtil TEST_UTIL = new HBaseTestingUtil();
   private static byte[] ROW = Bytes.toBytes("testRow");
   private static byte[] FAMILY = Bytes.toBytes("testFamily");
-  private static byte[] QUALIFIER = Bytes.toBytes("testQualifier");
   private static byte[] VALUE = Bytes.toBytes("testValue");
   private static byte[] COLUMN = Bytes.toBytes("column");
   private static int numRows = 10000;
   protected static int SLAVES = 3;
-  private static SingleProcessHBaseCluster myCluster;
   private static Table table;
 
   /**
    * @throws java.lang.Exception
    */
   @BeforeClass
   public static void setUpBeforeClass() throws Exception {
-    Configuration conf = TEST_UTIL.getConfiguration();
     TEST_UTIL.startMiniCluster(SLAVES);
   }