| /* |
| * 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 static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.fail; |
| import java.io.IOException; |
| import java.util.List; |
| import org.apache.hadoop.hbase.HBaseClassTestRule; |
| import org.apache.hadoop.hbase.MiniHBaseCluster; |
| import org.apache.hadoop.hbase.Waiter; |
| import org.apache.hadoop.hbase.client.Get; |
| import org.apache.hadoop.hbase.client.Put; |
| import org.apache.hadoop.hbase.client.Result; |
| import org.apache.hadoop.hbase.client.ResultScanner; |
| import org.apache.hadoop.hbase.client.Scan; |
| import org.apache.hadoop.hbase.testclassification.LargeTests; |
| import org.apache.hadoop.hbase.testclassification.ReplicationTests; |
| import org.apache.hadoop.hbase.util.Bytes; |
| import org.apache.hadoop.hbase.util.JVMClusterUtil; |
| import org.junit.Before; |
| import org.junit.ClassRule; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| import org.junit.runners.Parameterized.Parameter; |
| import org.junit.runners.Parameterized.Parameters; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.apache.hbase.thirdparty.com.google.common.collect.ImmutableList; |
| |
| /** |
| * Test handling of changes to the number of a peer's regionservers. |
| */ |
| @RunWith(Parameterized.class) |
| @Category({ ReplicationTests.class, LargeTests.class }) |
| public class TestReplicationChangingPeerRegionservers extends TestReplicationBase { |
| |
| @ClassRule |
| public static final HBaseClassTestRule CLASS_RULE = |
| HBaseClassTestRule.forClass(TestReplicationChangingPeerRegionservers.class); |
| |
| private static final Logger LOG = |
| LoggerFactory.getLogger(TestReplicationChangingPeerRegionservers.class); |
| |
| @SuppressWarnings("checkstyle:VisibilityModifier") @Parameter(0) |
| public boolean serialPeer; |
| |
| @Parameter(1) |
| public boolean syncPeer; |
| |
| @Override |
| protected boolean isSerialPeer() { |
| return serialPeer; |
| } |
| |
| @Override |
| protected boolean isSyncPeer() { |
| return syncPeer; |
| } |
| |
| @Parameters(name = "{index}: serialPeer={0}, syncPeer={1}") |
| public static List<Object[]> parameters() { |
| return ImmutableList.of(new Object[] { false, false }, new Object[] { false, true }, |
| new Object[] { true, false }, new Object[] { true, true }); |
| } |
| |
| @Before |
| public void setUp() throws Exception { |
| // Starting and stopping replication can make us miss new logs, |
| // rolling like this makes sure the most recent one gets added to the queue |
| for (JVMClusterUtil.RegionServerThread r : UTIL1.getHBaseCluster() |
| .getRegionServerThreads()) { |
| UTIL1.getAdmin().rollWALWriter(r.getRegionServer().getServerName()); |
| } |
| UTIL1.deleteTableData(tableName); |
| // truncating the table will send one Delete per row to the slave cluster |
| // in an async fashion, which is why we cannot just call deleteTableData on |
| // utility2 since late writes could make it to the slave in some way. |
| // Instead, we truncate the first table and wait for all the Deletes to |
| // make it to the slave. |
| Scan scan = new Scan(); |
| int lastCount = 0; |
| for (int i = 0; i < NB_RETRIES; i++) { |
| if (i == NB_RETRIES - 1) { |
| fail("Waited too much time for truncate"); |
| } |
| ResultScanner scanner = htable2.getScanner(scan); |
| Result[] res = scanner.next(NB_ROWS_IN_BIG_BATCH); |
| scanner.close(); |
| if (res.length != 0) { |
| if (res.length < lastCount) { |
| i--; // Don't increment timeout if we make progress |
| } |
| lastCount = res.length; |
| LOG.info("Still got " + res.length + " rows"); |
| Thread.sleep(SLEEP_TIME); |
| } else { |
| break; |
| } |
| } |
| } |
| |
| @Test |
| public void testChangingNumberOfPeerRegionServers() throws IOException, InterruptedException { |
| LOG.info("testSimplePutDelete"); |
| MiniHBaseCluster peerCluster = UTIL2.getMiniHBaseCluster(); |
| // This test wants two RS's up. We only run one generally so add one. |
| peerCluster.startRegionServer(); |
| Waiter.waitFor(peerCluster.getConfiguration(), 30000, new Waiter.Predicate<Exception>() { |
| @Override public boolean evaluate() throws Exception { |
| return peerCluster.getLiveRegionServerThreads().size() > 1; |
| } |
| }); |
| int numRS = peerCluster.getRegionServerThreads().size(); |
| |
| doPutTest(Bytes.toBytes(1)); |
| |
| int rsToStop = peerCluster.getServerWithMeta() == 0 ? 1 : 0; |
| peerCluster.stopRegionServer(rsToStop); |
| peerCluster.waitOnRegionServer(rsToStop); |
| |
| // Sanity check |
| assertEquals(numRS - 1, peerCluster.getRegionServerThreads().size()); |
| |
| doPutTest(Bytes.toBytes(2)); |
| |
| peerCluster.startRegionServer(); |
| |
| // Sanity check |
| assertEquals(numRS, peerCluster.getRegionServerThreads().size()); |
| |
| doPutTest(Bytes.toBytes(3)); |
| } |
| |
| private void doPutTest(byte[] row) throws IOException, InterruptedException { |
| Put put = new Put(row); |
| put.addColumn(famName, row, row); |
| |
| if (htable1 == null) { |
| htable1 = UTIL1.getConnection().getTable(tableName); |
| } |
| |
| htable1.put(put); |
| |
| Get get = new Get(row); |
| for (int i = 0; i < NB_RETRIES; i++) { |
| if (i == NB_RETRIES - 1) { |
| fail("Waited too much time for put replication"); |
| } |
| Result res = htable2.get(get); |
| if (res.isEmpty()) { |
| LOG.info("Row not available"); |
| Thread.sleep(SLEEP_TIME); |
| } else { |
| assertArrayEquals(res.value(), row); |
| break; |
| } |
| } |
| } |
| } |