/**
* 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.*;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.apache.hadoop.hbase.HBaseTestingUtility;
import org.apache.hadoop.hbase.HColumnDescriptor;
import org.apache.hadoop.hbase.HRegionInfo;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.MiniHBaseCluster;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.Admin;
import org.apache.hadoop.hbase.client.HTable;
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.client.Table;
import org.apache.hadoop.hbase.master.HMaster;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.hbase.MediumTests;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.mortbay.log.Log;
/**
* Tests that need to spin up a cluster testing an {@link HRegion}. Use
* {@link TestHRegion} if you don't need a cluster, if you can test w/ a
* standalone {@link HRegion}.
*/
@Category(MediumTests.class)
public class TestHRegionOnCluster {
private static final HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
@Test (timeout=300000)
public void testDataCorrectnessReplayingRecoveredEdits() throws Exception {
final int NUM_MASTERS = 1;
final int NUM_RS = 3;
TEST_UTIL.startMiniCluster(NUM_MASTERS, NUM_RS);
try {
final TableName TABLENAME = TableName.valueOf("testDataCorrectnessReplayingRecoveredEdits");
final byte[] FAMILY = Bytes.toBytes("family");
MiniHBaseCluster cluster = TEST_UTIL.getHBaseCluster();
HMaster master = cluster.getMaster();
// Create table
HTableDescriptor desc = new HTableDescriptor(TABLENAME);
desc.addFamily(new HColumnDescriptor(FAMILY));
Admin hbaseAdmin = TEST_UTIL.getHBaseAdmin();
hbaseAdmin.createTable(desc);
assertTrue(hbaseAdmin.isTableAvailable(TABLENAME));
// Put data: r1->v1
Log.info("Loading r1 to v1 into " + TABLENAME);
HTable table = new HTable(TEST_UTIL.getConfiguration(), TABLENAME);
putDataAndVerify(table, "r1", FAMILY, "v1", 1);
TEST_UTIL.waitUntilAllRegionsAssigned(table.getName());
// Move region to target server
HRegionInfo regionInfo = table.getRegionLocation("r1").getRegionInfo();
int originServerNum = cluster.getServerWith(regionInfo.getRegionName());
HRegionServer originServer = cluster.getRegionServer(originServerNum);
int targetServerNum = (originServerNum + 1) % NUM_RS;
HRegionServer targetServer = cluster.getRegionServer(targetServerNum);
assertFalse(originServer.equals(targetServer));
TEST_UTIL.waitUntilAllRegionsAssigned(table.getName());
Log.info("Moving " + regionInfo.getEncodedName() + " to " + targetServer.getServerName());
hbaseAdmin.move(regionInfo.getEncodedNameAsBytes(),
Bytes.toBytes(targetServer.getServerName().getServerName()));
do {
Thread.sleep(1);
} while (cluster.getServerWith(regionInfo.getRegionName()) == originServerNum);
// Put data: r2->v2
Log.info("Loading r2 to v2 into " + TABLENAME);
putDataAndVerify(table, "r2", FAMILY, "v2", 2);
TEST_UTIL.waitUntilAllRegionsAssigned(table.getName());
// Move region to origin server
Log.info("Moving " + regionInfo.getEncodedName() + " to " + originServer.getServerName());
hbaseAdmin.move(regionInfo.getEncodedNameAsBytes(),
Bytes.toBytes(originServer.getServerName().getServerName()));
do {
Thread.sleep(1);
} while (cluster.getServerWith(regionInfo.getRegionName()) == targetServerNum);
// Put data: r3->v3
Log.info("Loading r3 to v3 into " + TABLENAME);
putDataAndVerify(table, "r3", FAMILY, "v3", 3);
// Kill target server
Log.info("Killing target server " + targetServer.getServerName());
targetServer.kill();
cluster.getRegionServerThreads().get(targetServerNum).join();
// Wait until finish processing of shutdown
while (master.getServerManager().areDeadServersInProgress()) {
Thread.sleep(5);
}
// Kill origin server
Log.info("Killing origin server " + targetServer.getServerName());
originServer.kill();
cluster.getRegionServerThreads().get(originServerNum).join();
// Put data: r4->v4
Log.info("Loading r4 to v4 into " + TABLENAME);
putDataAndVerify(table, "r4", FAMILY, "v4", 4);
} finally {
TEST_UTIL.shutdownMiniCluster();
}
}
private void putDataAndVerify(Table table, String row, byte[] family,
String value, int verifyNum) throws IOException {
System.out.println("=========Putting data :" + row);
Put put = new Put(Bytes.toBytes(row));
put.add(family, Bytes.toBytes("q1"), Bytes.toBytes(value));
table.put(put);
ResultScanner resultScanner = table.getScanner(new Scan());
List<Result> results = new ArrayList<Result>();
while (true) {
Result r = resultScanner.next();
if (r == null)
break;
results.add(r);
}
resultScanner.close();
if (results.size() != verifyNum) {
System.out.println(results);
}
assertEquals(verifyNum, results.size());
}
}