| /** |
| * 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.wal; |
| |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.assertFalse; |
| |
| import java.util.List; |
| import java.util.ArrayList; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.hbase.HBaseTestingUtility; |
| import org.apache.hadoop.hbase.HRegionInfo; |
| import org.apache.hadoop.hbase.HTableDescriptor; |
| import org.apache.hadoop.hbase.testclassification.MediumTests; |
| import org.apache.hadoop.hbase.client.HTable; |
| import org.apache.hadoop.hbase.client.Put; |
| import org.apache.hadoop.hbase.regionserver.HRegionServer; |
| import org.apache.hadoop.hbase.util.Bytes; |
| import org.junit.AfterClass; |
| import org.junit.BeforeClass; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| |
| /** |
| * Tests that verifies that the log is forced to be rolled every "hbase.regionserver.logroll.period" |
| */ |
| @Category(MediumTests.class) |
| public class TestLogRollPeriod { |
| private static final Log LOG = LogFactory.getLog(TestLogRolling.class); |
| |
| private final static HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility(); |
| |
| private final static long LOG_ROLL_PERIOD = 4000; |
| |
| @BeforeClass |
| public static void setUpBeforeClass() throws Exception { |
| // disable the ui |
| TEST_UTIL.getConfiguration().setInt("hbase.regionsever.info.port", -1); |
| |
| TEST_UTIL.getConfiguration().setLong("hbase.regionserver.logroll.period", LOG_ROLL_PERIOD); |
| |
| TEST_UTIL.startMiniCluster(); |
| } |
| |
| @AfterClass |
| public static void tearDownAfterClass() throws Exception { |
| TEST_UTIL.shutdownMiniCluster(); |
| } |
| |
| /** |
| * Tests that the LogRoller perform the roll even if there are no edits |
| */ |
| @Test |
| public void testNoEdits() throws Exception { |
| final String tableName = "TestLogRollPeriodNoEdits"; |
| |
| TEST_UTIL.createTable(tableName, "cf"); |
| try { |
| HTable table = new HTable(TEST_UTIL.getConfiguration(), tableName); |
| try { |
| HRegionServer server = TEST_UTIL.getRSForFirstRegionInTable(Bytes.toBytes(tableName)); |
| HLog log = server.getWAL(); |
| checkMinLogRolls(log, 5); |
| } finally { |
| table.close(); |
| } |
| } finally { |
| TEST_UTIL.deleteTable(tableName); |
| } |
| } |
| |
| /** |
| * Tests that the LogRoller perform the roll with some data in the log |
| */ |
| @Test(timeout=60000) |
| public void testWithEdits() throws Exception { |
| final String tableName = "TestLogRollPeriodWithEdits"; |
| final String family = "cf"; |
| |
| TEST_UTIL.createTable(tableName, family); |
| try { |
| HRegionServer server = TEST_UTIL.getRSForFirstRegionInTable(Bytes.toBytes(tableName)); |
| HLog log = server.getWAL(); |
| final HTable table = new HTable(TEST_UTIL.getConfiguration(), tableName); |
| |
| Thread writerThread = new Thread("writer") { |
| @Override |
| public void run() { |
| try { |
| long row = 0; |
| while (!interrupted()) { |
| Put p = new Put(Bytes.toBytes(String.format("row%d", row))); |
| p.add(Bytes.toBytes(family), Bytes.toBytes("col"), Bytes.toBytes(row)); |
| table.put(p); |
| row++; |
| |
| Thread.sleep(LOG_ROLL_PERIOD / 16); |
| } |
| } catch (Exception e) { |
| LOG.warn(e); |
| } |
| } |
| }; |
| |
| try { |
| writerThread.start(); |
| checkMinLogRolls(log, 5); |
| } finally { |
| writerThread.interrupt(); |
| writerThread.join(); |
| table.close(); |
| } |
| } finally { |
| TEST_UTIL.deleteTable(tableName); |
| } |
| } |
| |
| private void checkMinLogRolls(final HLog log, final int minRolls) |
| throws Exception { |
| final List<Path> paths = new ArrayList<Path>(); |
| log.registerWALActionsListener(new WALActionsListener() { |
| @Override |
| public void preLogRoll(Path oldFile, Path newFile) {} |
| @Override |
| public void postLogRoll(Path oldFile, Path newFile) { |
| LOG.debug("postLogRoll: oldFile="+oldFile+" newFile="+newFile); |
| paths.add(newFile); |
| } |
| @Override |
| public void preLogArchive(Path oldFile, Path newFile) {} |
| @Override |
| public void postLogArchive(Path oldFile, Path newFile) {} |
| @Override |
| public void logRollRequested(boolean tooFewReplicas) {} |
| @Override |
| public void logCloseRequested() {} |
| @Override |
| public void visitLogEntryBeforeWrite(HRegionInfo info, HLogKey logKey, WALEdit logEdit) {} |
| @Override |
| public void visitLogEntryBeforeWrite(HTableDescriptor htd, HLogKey logKey, WALEdit logEdit) {} |
| }); |
| |
| // Sleep until we should get at least min-LogRoll events |
| long wtime = System.currentTimeMillis(); |
| Thread.sleep((minRolls + 1) * LOG_ROLL_PERIOD); |
| // Do some extra sleep in case the machine is slow, |
| // and the log-roll is not triggered exactly on LOG_ROLL_PERIOD. |
| final int NUM_RETRIES = 1 + 8 * (minRolls - paths.size()); |
| for (int retry = 0; paths.size() < minRolls && retry < NUM_RETRIES; ++retry) { |
| Thread.sleep(LOG_ROLL_PERIOD / 4); |
| } |
| wtime = System.currentTimeMillis() - wtime; |
| LOG.info(String.format("got %d rolls after %dms (%dms each) - expected at least %d rolls", |
| paths.size(), wtime, wtime / paths.size(), minRolls)); |
| assertFalse(paths.size() < minRolls); |
| } |
| } |