hbase-server/src/test/java/org/apache/hadoop/hbase/replication/TestSyncReplicationRemoveRemoteWAL.java

   1 /**
   2  * Licensed to the Apache Software Foundation (ASF) under one
   3  * or more contributor license agreements.  See the NOTICE file
   4  * distributed with this work for additional information
   5  * regarding copyright ownership.  The ASF licenses this file
   6  * to you under the Apache License, Version 2.0 (the
   7  * "License"); you may not use this file except in compliance
   8  * with the License.  You may obtain a copy of the License at
   9  *
  10  *     http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  * Unless required by applicable law or agreed to in writing, software
  13  * distributed under the License is distributed on an "AS IS" BASIS,
  14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  * See the License for the specific language governing permissions and
  16  * limitations under the License.
  17  */
  18 package org.apache.hadoop.hbase.replication;
  19
  20 import static org.hamcrest.CoreMatchers.endsWith;
  21 import static org.junit.Assert.assertEquals;
  22 import static org.junit.Assert.assertThat;
  23 import static org.junit.Assert.assertTrue;
  24
  25 import org.apache.hadoop.fs.FileStatus;
  26 import org.apache.hadoop.fs.Path;
  27 import org.apache.hadoop.hbase.HBaseClassTestRule;
  28 import org.apache.hadoop.hbase.master.MasterFileSystem;
  29 import org.apache.hadoop.hbase.regionserver.HRegionServer;
  30 import org.apache.hadoop.hbase.testclassification.LargeTests;
  31 import org.apache.hadoop.hbase.testclassification.ReplicationTests;
  32 import org.junit.ClassRule;
  33 import org.junit.Test;
  34 import org.junit.experimental.categories.Category;
  35
  36 @Category({ ReplicationTests.class, LargeTests.class })
  37 public class TestSyncReplicationRemoveRemoteWAL extends SyncReplicationTestBase {
  38
  39   @ClassRule
  40   public static final HBaseClassTestRule CLASS_RULE =
  41     HBaseClassTestRule.forClass(TestSyncReplicationRemoveRemoteWAL.class);
  42
  43   @Test
  44   public void testRemoveRemoteWAL() throws Exception {
  45     UTIL2.getAdmin().transitReplicationPeerSyncReplicationState(PEER_ID,
  46       SyncReplicationState.STANDBY);
  47     UTIL1.getAdmin().transitReplicationPeerSyncReplicationState(PEER_ID,
  48       SyncReplicationState.ACTIVE);
  49
  50     MasterFileSystem mfs = UTIL2.getMiniHBaseCluster().getMaster().getMasterFileSystem();
  51     Path remoteWALDir = ReplicationUtils.getPeerRemoteWALDir(
  52       new Path(mfs.getWALRootDir(), ReplicationUtils.REMOTE_WAL_DIR_NAME), PEER_ID);
  53     FileStatus[] remoteWALStatus = mfs.getWALFileSystem().listStatus(remoteWALDir);
  54     assertEquals(1, remoteWALStatus.length);
  55     Path remoteWAL = remoteWALStatus[0].getPath();
  56     assertThat(remoteWAL.getName(), endsWith(ReplicationUtils.SYNC_WAL_SUFFIX));
  57     writeAndVerifyReplication(UTIL1, UTIL2, 0, 100);
  58
  59     HRegionServer rs = UTIL1.getRSForFirstRegionInTable(TABLE_NAME);
  60     rs.getWalRoller().requestRollAll();
  61     // The replicated wal file should be deleted finally
  62     waitUntilDeleted(UTIL2, remoteWAL);
  63     remoteWALStatus = mfs.getWALFileSystem().listStatus(remoteWALDir);
  64     assertEquals(1, remoteWALStatus.length);
  65     remoteWAL = remoteWALStatus[0].getPath();
  66     assertThat(remoteWAL.getName(), endsWith(ReplicationUtils.SYNC_WAL_SUFFIX));
  67
  68     UTIL1.getAdmin().disableReplicationPeer(PEER_ID);
  69     write(UTIL1, 100, 200);
  70     UTIL1.getAdmin().transitReplicationPeerSyncReplicationState(PEER_ID,
  71       SyncReplicationState.DOWNGRADE_ACTIVE);
  72
  73     // should still be there since the peer is disabled and we haven't replicated the data yet
  74     assertTrue(mfs.getWALFileSystem().exists(remoteWAL));
  75
  76     UTIL1.getAdmin().enableReplicationPeer(PEER_ID);
  77     waitUntilReplicationDone(UTIL2, 200);
  78     verifyThroughRegion(UTIL2, 100, 200);
  79
  80     // Confirm that we will also remove the remote wal files in DA state
  81     waitUntilDeleted(UTIL2, remoteWAL);
  82   }
  83 }