/**
*
* 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.client;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import java.util.Arrays;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.hbase.CompatibilityFactory;
import org.apache.hadoop.hbase.HBaseTestingUtility;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.ipc.MetricsHBaseServerSource;
import org.apache.hadoop.hbase.test.MetricsAssertHelper;
import org.apache.hadoop.hbase.testclassification.LargeTests;
import org.apache.hadoop.hbase.util.Bytes;
import org.junit.After;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Rule;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.rules.TestName;
@Category(LargeTests.class)
public class TestLeaseRenewal {
public MetricsAssertHelper HELPER = CompatibilityFactory.getInstance(MetricsAssertHelper.class);
final Log LOG = LogFactory.getLog(getClass());
private final static HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
private static byte[] FAMILY = Bytes.toBytes("testFamily");
private static final byte[] ANOTHERROW = Bytes.toBytes("anotherrow");
private final static byte[] COL_QUAL = Bytes.toBytes("f1");
private final static byte[] VAL_BYTES = Bytes.toBytes("v1");
private final static byte[] ROW_BYTES = Bytes.toBytes("r1");
private final static int leaseTimeout =
HConstants.DEFAULT_HBASE_CLIENT_SCANNER_TIMEOUT_PERIOD / 4;
@Rule
public TestName name = new TestName();
/**
* @throws java.lang.Exception
*/
@BeforeClass
public static void setUpBeforeClass() throws Exception {
TEST_UTIL.getConfiguration().setInt(HConstants.HBASE_CLIENT_SCANNER_TIMEOUT_PERIOD,
leaseTimeout);
TEST_UTIL.startMiniCluster();
}
/**
* @throws java.lang.Exception
*/
@AfterClass
public static void tearDownAfterClass() throws Exception {
TEST_UTIL.shutdownMiniCluster();
}
/**
* @throws java.lang.Exception
*/
@Before
public void setUp() throws Exception {
// Nothing to do.
}
/**
* @throws java.lang.Exception
*/
@After
public void tearDown() throws Exception {
for (HTableDescriptor htd : TEST_UTIL.getAdmin().listTables()) {
LOG.info("Tear down, remove table=" + htd.getTableName());
TEST_UTIL.deleteTable(htd.getTableName());
}
}
@Test
public void testLeaseRenewal() throws Exception {
Table table = TEST_UTIL.createTable(TableName.valueOf(name.getMethodName()), FAMILY);
Put p = new Put(ROW_BYTES);
p.addColumn(FAMILY, COL_QUAL, VAL_BYTES);
table.put(p);
p = new Put(ANOTHERROW);
p.addColumn(FAMILY, COL_QUAL, VAL_BYTES);
table.put(p);
Scan s = new Scan();
s.setCaching(1);
ResultScanner rs = table.getScanner(s);
// we haven't open the scanner yet so nothing happens
assertFalse(rs.renewLease());
assertTrue(Arrays.equals(rs.next().getRow(), ANOTHERROW));
// renew the lease a few times, long enough to be sure
// the lease would have expired otherwise
Thread.sleep(leaseTimeout/2);
assertTrue(rs.renewLease());
Thread.sleep(leaseTimeout/2);
assertTrue(rs.renewLease());
Thread.sleep(leaseTimeout/2);
assertTrue(rs.renewLease());
// make sure we haven't advanced the scanner
assertTrue(Arrays.equals(rs.next().getRow(), ROW_BYTES));
assertTrue(rs.renewLease());
// make sure scanner is exhausted now
assertNull(rs.next());
// renewLease should return false now
assertFalse(rs.renewLease());
rs.close();
table.close();
MetricsHBaseServerSource serverSource = TEST_UTIL.getMiniHBaseCluster().getRegionServer(0)
.getRpcServer().getMetrics().getMetricsSource();
HELPER.assertCounter("exceptions.OutOfOrderScannerNextException", 0, serverSource);
}
}