/**
* Copyright 2010 The Apache Software Foundation
*
* 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.master;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.MiniHBaseCluster;
import org.apache.hadoop.hbase.HMsg;
import org.apache.hadoop.hbase.HServerInfo;
import org.apache.hadoop.hbase.HBaseTestingUtility;
import org.apache.hadoop.hbase.HRegionInfo;
import org.apache.hadoop.hbase.HServerAddress;
import org.apache.hadoop.hbase.client.HBaseAdmin;
import org.apache.hadoop.hbase.client.HTable;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.hbase.util.Pair;
import java.io.IOException;
import java.util.List;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import com.google.common.base.Joiner;
import static org.junit.Assert.*;
public class TestMaster {
private static final HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
private static final Log LOG = LogFactory.getLog(TestMasterWithDisabling.class);
private static final byte[] TABLENAME = Bytes.toBytes("TestMaster");
private static final byte[] FAMILYNAME = Bytes.toBytes("fam");
@BeforeClass
public static void beforeAllTests() throws Exception {
// Start a cluster of two regionservers.
TEST_UTIL.startMiniCluster(1);
}
@AfterClass
public static void afterAllTests() throws IOException {
TEST_UTIL.shutdownMiniCluster();
}
@Test
public void testMasterOpsWhileSplitting() throws Exception {
MiniHBaseCluster cluster = TEST_UTIL.getHBaseCluster();
HMaster m = cluster.getMaster();
HBaseAdmin admin = TEST_UTIL.getHBaseAdmin();
TEST_UTIL.createTable(TABLENAME, FAMILYNAME);
TEST_UTIL.loadTable(new HTable(TABLENAME), FAMILYNAME);
List<Pair<HRegionInfo, HServerAddress>> tableRegions =
m.getTableRegions(TABLENAME);
LOG.info("Regions after load: " + Joiner.on(',').join(tableRegions));
assertEquals(1, tableRegions.size());
assertArrayEquals(HConstants.EMPTY_START_ROW,
tableRegions.get(0).getFirst().getStartKey());
assertArrayEquals(HConstants.EMPTY_END_ROW,
tableRegions.get(0).getFirst().getEndKey());
// Now trigger a split and stop when the split is in progress
CountDownLatch aboutToOpen = new CountDownLatch(1);
CountDownLatch proceed = new CountDownLatch(1);
RegionOpenListener list = new RegionOpenListener(aboutToOpen, proceed);
m.getRegionServerOperationQueue().registerRegionServerOperationListener(list);
LOG.info("Splitting table");
admin.split(TABLENAME);
LOG.info("Waiting for split result to be about to open");
aboutToOpen.await(60, TimeUnit.SECONDS);
try {
LOG.info("Making sure we can call getTableRegions while opening");
tableRegions = m.getTableRegions(TABLENAME);
LOG.info("Regions: " + Joiner.on(',').join(tableRegions));
// We have three regions because one is split-in-progress
assertEquals(3, tableRegions.size());
LOG.info("Making sure we can call getTableRegionClosest while opening");
Pair<HRegionInfo,HServerAddress> pair =
m.getTableRegionForRow(TABLENAME, Bytes.toBytes("cde"));
LOG.info("Result is: " + pair);
Pair<HRegionInfo, HServerAddress> tableRegionFromName = m.getTableRegionFromName(pair.getFirst().getRegionName());
assertEquals(tableRegionFromName.getFirst(), pair.getFirst());
} finally {
proceed.countDown();
}
}
static class RegionOpenListener implements RegionServerOperationListener {
CountDownLatch aboutToOpen, proceed;
public RegionOpenListener(
CountDownLatch aboutToOpen, CountDownLatch proceed)
{
this.aboutToOpen = aboutToOpen;
this.proceed = proceed;
}
@Override
public boolean process(HServerInfo serverInfo, HMsg incomingMsg) {
if (!incomingMsg.isType(HMsg.Type.MSG_REPORT_OPEN)) {
return true;
}
try {
aboutToOpen.countDown();
proceed.await(60, TimeUnit.SECONDS);
} catch (InterruptedException ie) {
throw new RuntimeException(ie);
}
return true;
}
@Override
public boolean process(RegionServerOperation op) throws IOException {
return true;
}
@Override
public void processed(RegionServerOperation op) {
}
}
}