001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.regionserver;
019
020import static org.junit.Assert.assertEquals;
021import static org.junit.Assert.assertFalse;
022import static org.junit.Assert.assertNotNull;
023import static org.junit.Assert.assertTrue;
024
025import java.util.Collection;
026import org.apache.hadoop.hbase.HBaseClassTestRule;
027import org.apache.hadoop.hbase.HBaseTestingUtil;
028import org.apache.hadoop.hbase.TableName;
029import org.apache.hadoop.hbase.client.Admin;
030import org.apache.hadoop.hbase.client.Delete;
031import org.apache.hadoop.hbase.client.Get;
032import org.apache.hadoop.hbase.client.Put;
033import org.apache.hadoop.hbase.client.Result;
034import org.apache.hadoop.hbase.client.ResultScanner;
035import org.apache.hadoop.hbase.client.Scan;
036import org.apache.hadoop.hbase.client.Table;
037import org.apache.hadoop.hbase.master.cleaner.TimeToLiveHFileCleaner;
038import org.apache.hadoop.hbase.regionserver.compactions.CompactionConfiguration;
039import org.apache.hadoop.hbase.testclassification.MediumTests;
040import org.apache.hadoop.hbase.util.Bytes;
041import org.junit.AfterClass;
042import org.junit.BeforeClass;
043import org.junit.ClassRule;
044import org.junit.Test;
045import org.junit.experimental.categories.Category;
046
047@Category({ MediumTests.class })
048public class TestCleanupCompactedFileOnRegionClose {
049
050  @ClassRule
051  public static final HBaseClassTestRule CLASS_RULE =
052    HBaseClassTestRule.forClass(TestCleanupCompactedFileOnRegionClose.class);
053
054  private static HBaseTestingUtil util;
055
056  @BeforeClass
057  public static void beforeClass() throws Exception {
058    util = new HBaseTestingUtil();
059    util.getConfiguration().setInt(CompactionConfiguration.HBASE_HSTORE_COMPACTION_MIN_KEY, 100);
060    util.getConfiguration().set("dfs.blocksize", "64000");
061    util.getConfiguration().set("dfs.namenode.fs-limits.min-block-size", "1024");
062    util.getConfiguration().set(TimeToLiveHFileCleaner.TTL_CONF_KEY, "0");
063    util.startMiniCluster(2);
064  }
065
066  @AfterClass
067  public static void afterclass() throws Exception {
068    util.shutdownMiniCluster();
069  }
070
071  @Test
072  public void testCleanupOnClose() throws Exception {
073    TableName tableName = TableName.valueOf("testCleanupOnClose");
074    String familyName = "f";
075    byte[] familyNameBytes = Bytes.toBytes(familyName);
076    util.createTable(tableName, familyName);
077
078    Admin hBaseAdmin = util.getAdmin();
079    Table table = util.getConnection().getTable(tableName);
080
081    HRegionServer rs = util.getRSForFirstRegionInTable(tableName);
082    Region region = rs.getRegions(tableName).get(0);
083
084    int refSFCount = 4;
085    for (int i = 0; i < refSFCount; i++) {
086      for (int j = 0; j < refSFCount; j++) {
087        Put put = new Put(Bytes.toBytes(j));
088        put.addColumn(familyNameBytes, Bytes.toBytes(i), Bytes.toBytes(j));
089        table.put(put);
090      }
091      util.flush(tableName);
092    }
093    assertEquals(refSFCount, region.getStoreFileList(new byte[][] { familyNameBytes }).size());
094
095    // add a delete, to test wether we end up with an inconsistency post region close
096    Delete delete = new Delete(Bytes.toBytes(refSFCount - 1));
097    table.delete(delete);
098    util.flush(tableName);
099    assertFalse(table.exists(new Get(Bytes.toBytes(refSFCount - 1))));
100
101    // Create a scanner and keep it open to add references to StoreFileReaders
102    Scan scan = new Scan();
103    scan.withStopRow(Bytes.toBytes(refSFCount - 2));
104    scan.setCaching(1);
105    ResultScanner scanner = table.getScanner(scan);
106    Result res = scanner.next();
107    assertNotNull(res);
108    assertEquals(refSFCount, res.getFamilyMap(familyNameBytes).size());
109
110    // Verify the references
111    int count = 0;
112    for (HStoreFile sf : (Collection<HStoreFile>) region.getStore(familyNameBytes)
113      .getStorefiles()) {
114      synchronized (sf) {
115        if (count < refSFCount) {
116          assertTrue(sf.isReferencedInReads());
117        } else {
118          assertFalse(sf.isReferencedInReads());
119        }
120      }
121      count++;
122    }
123
124    // Major compact to produce compacted storefiles that need to be cleaned up
125    util.compact(tableName, true);
126    assertEquals(1, region.getStoreFileList(new byte[][] { familyNameBytes }).size());
127    assertEquals(refSFCount + 1, ((HStore) region.getStore(familyNameBytes)).getStoreEngine()
128      .getStoreFileManager().getCompactedfiles().size());
129
130    // close then open the region to determine wether compacted storefiles get cleaned up on close
131    hBaseAdmin.unassign(region.getRegionInfo().getRegionName(), false);
132    hBaseAdmin.assign(region.getRegionInfo().getRegionName());
133    util.waitUntilNoRegionsInTransition(10000);
134
135    assertFalse("Deleted row should not exist",
136      table.exists(new Get(Bytes.toBytes(refSFCount - 1))));
137
138    rs = util.getRSForFirstRegionInTable(tableName);
139    region = rs.getRegions(tableName).get(0);
140    assertEquals(1, region.getStoreFileList(new byte[][] { familyNameBytes }).size());
141    assertEquals(0, ((HStore) region.getStore(familyNameBytes)).getStoreEngine()
142      .getStoreFileManager().getCompactedfiles().size());
143  }
144}