From 0ae42ddaee38315e10d7537ec2872a8263bd11c8 Mon Sep 17 00:00:00 2001 From: chenglei Date: Sun, 24 Jul 2022 15:08:03 +0800 Subject: [PATCH] =?UTF-8?q?HBASE-27230=20RegionServer=20should=20be=20abor?= =?UTF-8?q?ted=20when=20WAL.sync=20throws=20Timeo=E2=80=A6=20(#4641)?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Duo Zhang --- .../hadoop/hbase/regionserver/HRegion.java | 28 ++- .../hadoop/hbase/regionserver/HStore.java | 3 +- .../hbase/regionserver/wal/AbstractFSWAL.java | 4 +- .../wal/WALSyncTimeoutIOException.java | 48 ++++ .../hbase/regionserver/wal/WALUtil.java | 6 + .../hadoop/hbase/wal/AsyncFSWALProvider.java | 10 +- .../java/org/apache/hadoop/hbase/wal/WAL.java | 5 + .../apache/hadoop/hbase/wal/WALFactory.java | 7 + .../hadoop/hbase/master/TestWarmupRegion.java | 6 - .../wal/TestWALSyncTimeoutException.java | 208 ++++++++++++++++++ 10 files changed, 307 insertions(+), 18 deletions(-) create mode 100644 hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/wal/WALSyncTimeoutIOException.java create mode 100644 hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/wal/TestWALSyncTimeoutException.java diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java index 0857ace1f663..951758d6b424 100644 --- a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java +++ b/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> familyMap, - MemStoreSizing memstoreAccounting) throws IOException { + MemStoreSizing memstoreAccounting) { for (Map.Entry> e : familyMap.entrySet()) { byte[] family = e.getKey(); List 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 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 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; } diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HStore.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HStore.java index 54e18d619822..300ff4f818c7 100644 --- a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HStore.java +++ b/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 cells, long readpoint, MemStoreSizing memstoreSizing) - throws IOException { + public void upsert(Iterable cells, long readpoint, MemStoreSizing memstoreSizing) { this.storeEngine.readLock(); try { this.memstore.upsert(cells, readpoint, memstoreSizing); diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.java index c05f71011721..77708c39590d 100644 --- a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.java +++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.java @@ -142,7 +142,7 @@ public abstract class AbstractFSWAL 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); diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/wal/WALSyncTimeoutIOException.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/wal/WALSyncTimeoutIOException.java new file mode 100644 index 000000000000..8cef9c9dfd3d --- /dev/null +++ b/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); + } + +} diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/wal/WALUtil.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/wal/WALUtil.java index 243e5eb983e3..a6c4bda6ee0b 100644 --- a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/wal/WALUtil.java +++ b/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; diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/wal/AsyncFSWALProvider.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/wal/AsyncFSWALProvider.java index 2fe0402ca4df..b171a401a2e3 100644 --- a/hbase-server/src/main/java/org/apache/hadoop/hbase/wal/AsyncFSWALProvider.java +++ b/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 channelClass; + /** + * Protected visibility for used in tests. + */ + protected Class channelClass; @Override protected AsyncFSWAL createWAL() throws IOException { diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/wal/WAL.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/wal/WAL.java index 390a9251751a..21accbcf99f4 100644 --- a/hbase-server/src/main/java/org/apache/hadoop/hbase/wal/WAL.java +++ b/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); diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/wal/WALFactory.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/wal/WALFactory.java index 3a019ce84368..9136099defdc 100644 --- a/hbase-server/src/main/java/org/apache/hadoop/hbase/wal/WALFactory.java +++ b/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; + } } diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/master/TestWarmupRegion.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/master/TestWarmupRegion.java index 4adfd33a6186..420c0a6cac60 100644 --- a/hbase-server/src/test/java/org/apache/hadoop/hbase/master/TestWarmupRegion.java +++ b/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 @@ -66,12 +63,10 @@ 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; /** @@ -79,7 +74,6 @@ public class TestWarmupRegion { */ @BeforeClass public static void setUpBeforeClass() throws Exception { - Configuration conf = TEST_UTIL.getConfiguration(); TEST_UTIL.startMiniCluster(SLAVES); } diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/wal/TestWALSyncTimeoutException.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/wal/TestWALSyncTimeoutException.java new file mode 100644 index 000000000000..939c56a54472 --- /dev/null +++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/wal/TestWALSyncTimeoutException.java @@ -0,0 +1,208 @@ +/* + * 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 static org.junit.Assert.assertTrue; +import static org.junit.Assert.fail; + +import java.io.IOException; +import java.util.List; +import org.apache.hadoop.conf.Configuration; +import org.apache.hadoop.fs.FileSystem; +import org.apache.hadoop.fs.Path; +import org.apache.hadoop.hbase.Abortable; +import org.apache.hadoop.hbase.HBaseClassTestRule; +import org.apache.hadoop.hbase.HBaseTestingUtil; +import org.apache.hadoop.hbase.HConstants; +import org.apache.hadoop.hbase.StartTestingClusterOption; +import org.apache.hadoop.hbase.TableName; +import org.apache.hadoop.hbase.client.ColumnFamilyDescriptorBuilder; +import org.apache.hadoop.hbase.client.Put; +import org.apache.hadoop.hbase.client.RegionInfo; +import org.apache.hadoop.hbase.client.TableDescriptor; +import org.apache.hadoop.hbase.client.TableDescriptorBuilder; +import org.apache.hadoop.hbase.io.asyncfs.monitor.StreamSlowMonitor; +import org.apache.hadoop.hbase.regionserver.HRegion; +import org.apache.hadoop.hbase.regionserver.HRegionFileSystem; +import org.apache.hadoop.hbase.regionserver.HRegionServer; +import org.apache.hadoop.hbase.regionserver.RegionServerServices; +import org.apache.hadoop.hbase.regionserver.regionreplication.RegionReplicationSink; +import org.apache.hadoop.hbase.testclassification.LargeTests; +import org.apache.hadoop.hbase.testclassification.RegionServerTests; +import org.apache.hadoop.hbase.util.Bytes; +import org.apache.hadoop.hbase.util.CommonFSUtils; +import org.apache.hadoop.hbase.wal.AsyncFSWALProvider; +import org.apache.hadoop.hbase.wal.WAL; +import org.apache.hadoop.hbase.wal.WALFactory; +import org.apache.hadoop.hbase.wal.WALProvider; +import org.junit.AfterClass; +import org.junit.BeforeClass; +import org.junit.ClassRule; +import org.junit.Test; +import org.junit.experimental.categories.Category; + +import org.apache.hbase.thirdparty.io.netty.channel.Channel; +import org.apache.hbase.thirdparty.io.netty.channel.EventLoopGroup; + +@Category({ RegionServerTests.class, LargeTests.class }) +public class TestWALSyncTimeoutException { + + @ClassRule + public static final HBaseClassTestRule CLASS_RULE = + HBaseClassTestRule.forClass(TestWALSyncTimeoutException.class); + + private static final byte[] FAMILY = Bytes.toBytes("family_test"); + + private static final byte[] QUAL = Bytes.toBytes("qualifier_test"); + + private static final HBaseTestingUtil HTU = new HBaseTestingUtil(); + + private static TableName tableName = TableName.valueOf("TestWALSyncTimeoutException"); + private static volatile boolean testWALTimout = false; + private static final long timeoutMIlliseconds = 3000; + private static final String USER_THREAD_NAME = tableName.getNameAsString(); + + @BeforeClass + public static void setUp() throws Exception { + Configuration conf = HTU.getConfiguration(); + conf.setClass(HConstants.REGION_IMPL, HRegionForTest.class, HRegion.class); + conf.setInt(RegionReplicationSink.RETRIES_NUMBER, 1); + conf.setLong(RegionReplicationSink.RPC_TIMEOUT_MS, 10 * 60 * 1000); + conf.setLong(RegionReplicationSink.OPERATION_TIMEOUT_MS, 20 * 60 * 1000); + conf.setLong(RegionReplicationSink.META_EDIT_RPC_TIMEOUT_MS, 10 * 60 * 1000); + conf.setLong(RegionReplicationSink.META_EDIT_OPERATION_TIMEOUT_MS, 20 * 60 * 1000); + conf.setClass(WALFactory.WAL_PROVIDER, SlowAsyncFSWALProvider.class, WALProvider.class); + conf.setLong(AbstractFSWAL.WAL_SYNC_TIMEOUT_MS, timeoutMIlliseconds); + HTU.startMiniCluster(StartTestingClusterOption.builder().numRegionServers(1).build()); + + } + + @AfterClass + public static void tearDown() throws Exception { + HTU.shutdownMiniCluster(); + } + + /** + * This test is for HBASE-27230. When {@link WAL#sync} timeout, it would throws + * {@link WALSyncTimeoutIOException},and when {@link HRegion#doWALAppend} catches this exception + * it aborts the RegionServer. + */ + @Test + public void testWALSyncWriteException() throws Exception { + final HRegionForTest region = this.createTable(); + + String oldThreadName = Thread.currentThread().getName(); + Thread.currentThread().setName(USER_THREAD_NAME); + try { + byte[] rowKey1 = Bytes.toBytes(1); + byte[] value1 = Bytes.toBytes(3); + Thread.sleep(2000); + testWALTimout = true; + + /** + * The {@link WAL#sync} would timeout and throws {@link WALSyncTimeoutIOException},when + * {@link HRegion#doWALAppend} catches this exception it aborts the RegionServer. + */ + try { + region.put(new Put(rowKey1).addColumn(FAMILY, QUAL, value1)); + fail(); + } catch (WALSyncTimeoutIOException e) { + assertTrue(e != null); + } + assertTrue(region.getRSServices().isAborted()); + } finally { + Thread.currentThread().setName(oldThreadName); + testWALTimout = false; + } + } + + private HRegionForTest createTable() throws Exception { + TableDescriptor tableDescriptor = TableDescriptorBuilder.newBuilder(tableName) + .setColumnFamily(ColumnFamilyDescriptorBuilder.of(FAMILY)).build(); + HTU.getAdmin().createTable(tableDescriptor); + HRegionServer rs = HTU.getMiniHBaseCluster().getRegionServer(0); + return (HRegionForTest) rs.getRegions(tableName).get(0); + } + + public static final class HRegionForTest extends HRegion { + + public HRegionForTest(HRegionFileSystem fs, WAL wal, Configuration confParam, + TableDescriptor htd, RegionServerServices rsServices) { + super(fs, wal, confParam, htd, rsServices); + } + + @SuppressWarnings("deprecation") + public HRegionForTest(Path tableDir, WAL wal, FileSystem fs, Configuration confParam, + RegionInfo regionInfo, TableDescriptor htd, RegionServerServices rsServices) { + super(tableDir, wal, fs, confParam, regionInfo, htd, rsServices); + } + + public RegionServerServices getRSServices() { + return this.rsServices; + } + + } + + public static class SlowAsyncFSWAL extends AsyncFSWAL { + + public SlowAsyncFSWAL(FileSystem fs, Abortable abortable, Path rootDir, String logDir, + String archiveDir, Configuration conf, List listeners, + boolean failIfWALExists, String prefix, String suffix, EventLoopGroup eventLoopGroup, + Class channelClass, StreamSlowMonitor monitor) + throws FailedLogCloseException, IOException { + super(fs, abortable, rootDir, logDir, archiveDir, conf, listeners, failIfWALExists, prefix, + suffix, eventLoopGroup, channelClass, monitor); + + } + + public SlowAsyncFSWAL(FileSystem fs, Path rootDir, String logDir, String archiveDir, + Configuration conf, List listeners, boolean failIfWALExists, + String prefix, String suffix, EventLoopGroup eventLoopGroup, + Class channelClass) throws FailedLogCloseException, IOException { + super(fs, rootDir, logDir, archiveDir, conf, listeners, failIfWALExists, prefix, suffix, + eventLoopGroup, channelClass); + + } + + @Override + protected void atHeadOfRingBufferEventHandlerAppend() { + if (testWALTimout) { + try { + Thread.sleep(timeoutMIlliseconds + 1000); + } catch (InterruptedException e) { + throw new RuntimeException(e); + } + } + super.atHeadOfRingBufferEventHandlerAppend(); + } + + } + + public static class SlowAsyncFSWALProvider extends AsyncFSWALProvider { + + @Override + protected AsyncFSWAL createWAL() throws IOException { + return new SlowAsyncFSWAL(CommonFSUtils.getWALFileSystem(conf), this.abortable, + CommonFSUtils.getWALRootDir(conf), getWALDirectoryName(factory.getFactoryId()), + getWALArchiveDirectoryName(conf, factory.getFactoryId()), conf, listeners, true, logPrefix, + META_WAL_PROVIDER_ID.equals(providerId) ? META_WAL_PROVIDER_ID : null, eventLoopGroup, + channelClass, factory.getExcludeDatanodeManager().getStreamSlowMonitor(providerId)); + } + + } +}