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HBASE-19017 [AMv2] EnableTableProcedure is not retaining the assignments 

(Ram)
This commit is contained in:
Ramkrishna 2017-10-17 11:06:51 +05:30
parent cf550c2be1
commit 8b8f7a017b
2 changed files with 190 additions and 0 deletions
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4
hbase-server/src/main/java/org/apache/hadoop/hbase/master/assignment/AssignProcedure.java
View File

@ -198,6 +198,10 @@ public class AssignProcedure extends RegionTransitionProcedure {
// Try and keep the location we had before we offlined.
retain = true;
regionNode.setRegionLocation(lastRegionLocation);
} else if (regionNode.getLastHost() != null) {
retain = true;
LOG.info("Setting lastHost as the region location " + regionNode.getLastHost());
regionNode.setRegionLocation(regionNode.getLastHost());
}
}
}

186
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestRegionReplicasAreDistributed.java Normal file
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@ -0,0 +1,186 @@
/**
* 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;
import static org.junit.Assert.assertTrue;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseTestingUtility;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.ServerName;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.RegionInfo;
import org.apache.hadoop.hbase.client.Table;
import org.apache.hadoop.hbase.testclassification.MediumTests;
import org.apache.hadoop.hbase.testclassification.RegionServerTests;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.hbase.util.RegionSplitter;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.experimental.categories.Category;
@Category({ RegionServerTests.class, MediumTests.class })
public class TestRegionReplicasAreDistributed {
private static final Log LOG = LogFactory.getLog(TestRegionReplicasAreDistributed.class);
private static final int NB_SERVERS = 3;
private static Table table;
private static final HBaseTestingUtility HTU = new HBaseTestingUtility();
private static final byte[] f = HConstants.CATALOG_FAMILY;
Map<ServerName, Collection<RegionInfo>> serverVsOnlineRegions;
Map<ServerName, Collection<RegionInfo>> serverVsOnlineRegions2;
Map<ServerName, Collection<RegionInfo>> serverVsOnlineRegions3;
Map<ServerName, Collection<RegionInfo>> serverVsOnlineRegions4;
@BeforeClass
public static void before() throws Exception {
HTU.getConfiguration().setInt(">hbase.master.wait.on.regionservers.mintostart", 3);
HTU.startMiniCluster(NB_SERVERS);
Thread.sleep(3000);
final TableName tableName =
TableName.valueOf(TestRegionReplicasAreDistributed.class.getSimpleName());
// Create table then get the single region for our new table.
createTableDirectlyFromHTD(tableName);
}
private static void createTableDirectlyFromHTD(final TableName tableName) throws IOException {
HTableDescriptor htd = new HTableDescriptor(tableName);
htd.setRegionReplication(3);
// create a table with 3 replication
table = HTU.createTable(htd, new byte[][] { f }, getSplits(20),
new Configuration(HTU.getConfiguration()));
}
private static byte[][] getSplits(int numRegions) {
RegionSplitter.UniformSplit split = new RegionSplitter.UniformSplit();
split.setFirstRow(Bytes.toBytes(0L));
split.setLastRow(Bytes.toBytes(Long.MAX_VALUE));
return split.split(numRegions);
}
@AfterClass
public static void afterClass() throws Exception {
HRegionServer.TEST_SKIP_REPORTING_TRANSITION = false;
table.close();
HTU.shutdownMiniCluster();
}
private HRegionServer getRS() {
return HTU.getMiniHBaseCluster().getRegionServer(0);
}
private HRegionServer getSecondaryRS() {
return HTU.getMiniHBaseCluster().getRegionServer(1);
}
private HRegionServer getTertiaryRS() {
return HTU.getMiniHBaseCluster().getRegionServer(2);
}
@Test(timeout = 60000)
public void testRegionReplicasCreatedAreDistributed() throws Exception {
try {
checkAndAssertRegionDistribution(false);
// now diesbale and enable the table again. It should be truly distributed
HTU.getAdmin().disableTable(table.getName());
LOG.info("Disabled the table " + table.getName());
LOG.info("enabling the table " + table.getName());
HTU.getAdmin().enableTable(table.getName());
LOG.info("Enabled the table " + table.getName());
boolean res = checkAndAssertRegionDistribution(true);
assertTrue("Region retainment not done ", res);
} finally {
HTU.getAdmin().disableTable(table.getName());
HTU.getAdmin().deleteTable(table.getName());
}
}
private boolean checkAndAssertRegionDistribution(boolean checkfourth) throws Exception {
Collection<RegionInfo> onlineRegions =
new ArrayList<RegionInfo>(getRS().getOnlineRegionsLocalContext().size());
for (HRegion region : getRS().getOnlineRegionsLocalContext()) {
onlineRegions.add(region.getRegionInfo());
}
if (this.serverVsOnlineRegions == null) {
this.serverVsOnlineRegions = new HashMap<ServerName, Collection<RegionInfo>>();
this.serverVsOnlineRegions.put(getRS().getServerName(), onlineRegions);
} else {
Collection<RegionInfo> existingRegions =
new ArrayList<RegionInfo>(this.serverVsOnlineRegions.get(getRS().getServerName()));
LOG.info("Count is " + existingRegions.size() + " " + onlineRegions.size());
for (RegionInfo existingRegion : existingRegions) {
if (!onlineRegions.contains(existingRegion)) {
return false;
}
}
}
Collection<RegionInfo> onlineRegions2 =
new ArrayList<RegionInfo>(getSecondaryRS().getOnlineRegionsLocalContext().size());
for (HRegion region : getSecondaryRS().getOnlineRegionsLocalContext()) {
onlineRegions2.add(region.getRegionInfo());
}
if (this.serverVsOnlineRegions2 == null) {
this.serverVsOnlineRegions2 = new HashMap<ServerName, Collection<RegionInfo>>();
this.serverVsOnlineRegions2.put(getSecondaryRS().getServerName(), onlineRegions2);
} else {
Collection<RegionInfo> existingRegions = new ArrayList<RegionInfo>(
this.serverVsOnlineRegions2.get(getSecondaryRS().getServerName()));
LOG.info("Count is " + existingRegions.size() + " " + onlineRegions2.size());
for (RegionInfo existingRegion : existingRegions) {
if (!onlineRegions2.contains(existingRegion)) {
return false;
}
}
}
Collection<RegionInfo> onlineRegions3 =
new ArrayList<RegionInfo>(getTertiaryRS().getOnlineRegionsLocalContext().size());
for (HRegion region : getTertiaryRS().getOnlineRegionsLocalContext()) {
onlineRegions3.add(region.getRegionInfo());
}
if (this.serverVsOnlineRegions3 == null) {
this.serverVsOnlineRegions3 = new HashMap<ServerName, Collection<RegionInfo>>();
this.serverVsOnlineRegions3.put(getTertiaryRS().getServerName(), onlineRegions3);
} else {
Collection<RegionInfo> existingRegions = new ArrayList<RegionInfo>(
this.serverVsOnlineRegions3.get(getTertiaryRS().getServerName()));
LOG.info("Count is " + existingRegions.size() + " " + onlineRegions3.size());
for (RegionInfo existingRegion : existingRegions) {
if (!onlineRegions3.contains(existingRegion)) {
return false;
}
}
}
// META and namespace to be added
return true;
}
}