From 4727d9fb4e35ad4d6b0a13a881125857b05e7256 Mon Sep 17 00:00:00 2001 From: zhangduo Date: Tue, 5 Feb 2019 17:49:36 +0800 Subject: [PATCH] HBASE-21838 Create a special ReplicationEndpoint just for verifying the WAL entries are fine --- .../replication/EmptyReplicationEndpoint.java | 76 +++++++++++ .../TestEmptyReplicationEndpoint.java | 129 ++++++++++++++++++ 2 files changed, 205 insertions(+) create mode 100644 hbase-server/src/main/java/org/apache/hadoop/hbase/replication/EmptyReplicationEndpoint.java create mode 100644 hbase-server/src/test/java/org/apache/hadoop/hbase/replication/TestEmptyReplicationEndpoint.java diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/replication/EmptyReplicationEndpoint.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/replication/EmptyReplicationEndpoint.java new file mode 100644 index 0000000000..7ce7268fca --- /dev/null +++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/replication/EmptyReplicationEndpoint.java @@ -0,0 +1,76 @@ +/** + * 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.replication; + +import java.util.UUID; +import org.apache.yetus.audience.InterfaceAudience; + +/** + * A dummy {@link ReplicationEndpoint} that replicates nothing. + *

+ * Mainly used by ITBLL to check whether all the entries in WAL files are fine, since for normal + * case, we will only read the WAL files when there are region servers crash and we need to split + * the log, but for replication we will read all the entries and decode the cells out and then pass + * it to the {@link ReplicationEndpoint}, so setting up a replication peer can help finding out + * whether there are broken entries in WAL files. + */ +@InterfaceAudience.Private +public class EmptyReplicationEndpoint extends BaseReplicationEndpoint { + + @Override + public boolean canReplicateToSameCluster() { + return true; + } + + @Override + public UUID getPeerUUID() { + return ctx.getClusterId(); + } + + @Override + public WALEntryFilter getWALEntryfilter() { + return null; + } + + @Override + public boolean replicate(ReplicateContext replicateContext) { + // The cells have already been decoded so we do not need to check it again, as if there are + // errors we will fail before arriving here. + return true; + } + + @Override + public void start() { + startAsync(); + } + + @Override + public void stop() { + stopAsync(); + } + + @Override + protected void doStart() { + notifyStarted(); + } + + @Override + protected void doStop() { + notifyStopped(); + } +} diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/replication/TestEmptyReplicationEndpoint.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/replication/TestEmptyReplicationEndpoint.java new file mode 100644 index 0000000000..9e9158ced3 --- /dev/null +++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/replication/TestEmptyReplicationEndpoint.java @@ -0,0 +1,129 @@ +/** + * 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.replication; + +import static org.junit.Assert.assertArrayEquals; + +import java.util.concurrent.BlockingQueue; +import java.util.concurrent.LinkedBlockingQueue; +import java.util.concurrent.TimeUnit; +import java.util.concurrent.TimeoutException; +import org.apache.hadoop.hbase.Cell; +import org.apache.hadoop.hbase.CellUtil; +import org.apache.hadoop.hbase.HBaseClassTestRule; +import org.apache.hadoop.hbase.HBaseTestingUtility; +import org.apache.hadoop.hbase.TableName; +import org.apache.hadoop.hbase.client.Put; +import org.apache.hadoop.hbase.client.Table; +import org.apache.hadoop.hbase.testclassification.MediumTests; +import org.apache.hadoop.hbase.testclassification.ReplicationTests; +import org.apache.hadoop.hbase.util.Bytes; +import org.apache.hadoop.hbase.wal.WAL; +import org.apache.hadoop.hbase.wal.WALEdit; +import org.junit.AfterClass; +import org.junit.BeforeClass; +import org.junit.ClassRule; +import org.junit.Test; +import org.junit.experimental.categories.Category; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +/** + * Confirm that the empty replication endpoint can work. + */ +@Category({ ReplicationTests.class, MediumTests.class }) +public class TestEmptyReplicationEndpoint { + + @ClassRule + public static final HBaseClassTestRule CLASS_RULE = + HBaseClassTestRule.forClass(TestEmptyReplicationEndpoint.class); + + private static final Logger LOG = LoggerFactory.getLogger(TestEmptyReplicationEndpoint.class); + + private static final HBaseTestingUtility UTIL = new HBaseTestingUtility(); + + private static final TableName TABLE_NAME = TableName.valueOf("empty"); + + private static final byte[] CF = Bytes.toBytes("family"); + + private static final byte[] CQ = Bytes.toBytes("qualifier"); + + private static final String PEER_ID = "empty"; + + private static final BlockingQueue CELLS = new LinkedBlockingQueue<>(); + + public static final class EndpointForTest extends EmptyReplicationEndpoint { + + @Override + public boolean replicate(ReplicateContext replicateContext) { + LOG.info(replicateContext.getEntries().toString()); + replicateContext.entries.stream().map(WAL.Entry::getEdit).map(WALEdit::getCells) + .forEachOrdered(CELLS::addAll); + return super.replicate(replicateContext); + } + } + + @BeforeClass + public static void setUp() throws Exception { + UTIL.startMiniCluster(3); + // notice that we do not need to set replication scope here, EmptyReplicationEndpoint take all + // edits no matter what the replications scope is. + UTIL.createTable(TABLE_NAME, CF); + UTIL.getAdmin().addReplicationPeer(PEER_ID, + ReplicationPeerConfig.newBuilder().setClusterKey("zk1:8888:/hbase") + .setReplicationEndpointImpl(EndpointForTest.class.getName()).build()); + } + + @AfterClass + public static void tearDown() throws Exception { + UTIL.shutdownMiniCluster(); + } + + @Test + public void test() throws Exception { + try (Table table = UTIL.getConnection().getTable(TABLE_NAME)) { + for (int i = 0; i < 100; i++) { + table.put(new Put(Bytes.toBytes(i)).addColumn(CF, CQ, Bytes.toBytes(i))); + } + } + long lastNoCellTime = -1; + for (int i = 0; i < 100;) { + Cell cell = CELLS.poll(); + if (cell == null) { + if (lastNoCellTime < 0) { + lastNoCellTime = System.nanoTime(); + } else { + if (System.nanoTime() - lastNoCellTime >= TimeUnit.SECONDS.toNanos(30)) { + throw new TimeoutException("Timeout waiting for wal edit"); + } + } + Thread.sleep(1000); + continue; + } + lastNoCellTime = -1; + if (!Bytes.equals(CF, CellUtil.cloneFamily(cell))) { + // meta edits, such as open/close/flush, etc. skip + continue; + } + assertArrayEquals(Bytes.toBytes(i), CellUtil.cloneRow(cell)); + assertArrayEquals(CQ, CellUtil.cloneQualifier(cell)); + assertArrayEquals(Bytes.toBytes(i), CellUtil.cloneValue(cell)); + i++; + } + } +} -- 2.17.1