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18 package org.apache.hadoop.hbase.mapreduce;
19
20 import static org.junit.Assert.assertEquals;
21 import static org.junit.Assert.assertTrue;
22 import static org.junit.Assert.assertNull;
23
24 import org.apache.hadoop.conf.Configuration;
25 import org.apache.hadoop.fs.Path;
26 import org.apache.hadoop.hbase.HBaseTestingUtility;
27 import org.apache.hadoop.hbase.HConstants;
28 import org.apache.hadoop.hbase.LargeTests;
29 import org.apache.hadoop.hbase.MiniHBaseCluster;
30 import org.apache.hadoop.hbase.client.Delete;
31 import org.apache.hadoop.hbase.client.Get;
32 import org.apache.hadoop.hbase.client.HTable;
33 import org.apache.hadoop.hbase.client.Put;
34 import org.apache.hadoop.hbase.client.Result;
35 import org.apache.hadoop.hbase.regionserver.wal.HLog;
36 import org.apache.hadoop.hbase.util.Bytes;
37 import org.junit.AfterClass;
38 import org.junit.BeforeClass;
39 import org.junit.Test;
40 import org.junit.experimental.categories.Category;
41
42
43
44
45 @Category(LargeTests.class)
46 public class TestWALPlayer {
47 private static final HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
48 private static MiniHBaseCluster cluster;
49
50 @BeforeClass
51 public static void beforeClass() throws Exception {
52 cluster = TEST_UTIL.startMiniCluster();
53 TEST_UTIL.startMiniMapReduceCluster();
54 }
55
56 @AfterClass
57 public static void afterClass() throws Exception {
58 TEST_UTIL.shutdownMiniMapReduceCluster();
59 TEST_UTIL.shutdownMiniCluster();
60 }
61
62
63
64
65
66 @Test
67 public void testWALPlayer() throws Exception {
68 final byte[] TABLENAME1 = Bytes.toBytes("testWALPlayer1");
69 final byte[] TABLENAME2 = Bytes.toBytes("testWALPlayer2");
70 final byte[] FAMILY = Bytes.toBytes("family");
71 final byte[] COLUMN1 = Bytes.toBytes("c1");
72 final byte[] COLUMN2 = Bytes.toBytes("c2");
73 final byte[] ROW = Bytes.toBytes("row");
74 HTable t1 = TEST_UTIL.createTable(TABLENAME1, FAMILY);
75 HTable t2 = TEST_UTIL.createTable(TABLENAME2, FAMILY);
76
77
78 Put p = new Put(ROW);
79 p.add(FAMILY, COLUMN1, COLUMN1);
80 p.add(FAMILY, COLUMN2, COLUMN2);
81 t1.put(p);
82
83 Delete d = new Delete(ROW);
84 d.deleteColumns(FAMILY, COLUMN1);
85 t1.delete(d);
86
87
88 HLog log = cluster.getRegionServer(0).getWAL();
89 log.rollWriter();
90 String walInputDir = new Path(cluster.getMaster().getMasterFileSystem()
91 .getRootDir(), HConstants.HREGION_LOGDIR_NAME).toString();
92
93 WALPlayer player = new WALPlayer(TEST_UTIL.getConfiguration());
94 assertEquals(0, player.run(new String[] { walInputDir, Bytes.toString(TABLENAME1),
95 Bytes.toString(TABLENAME2) }));
96
97
98 Get g = new Get(ROW);
99 Result r = t2.get(g);
100 assertEquals(1, r.size());
101 assertTrue(Bytes.equals(COLUMN2, r.raw()[0].getQualifier()));
102 }
103 }