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18 package org.apache.hadoop.hbase.master;
19
20 import static org.junit.Assert.assertEquals;
21 import static org.junit.Assert.assertNotNull;
22 import static org.junit.Assert.assertTrue;
23
24 import java.io.IOException;
25 import java.util.List;
26
27 import org.apache.hadoop.hbase.HBaseTestingUtility;
28 import org.apache.hadoop.hbase.HConstants;
29 import org.apache.hadoop.hbase.MiniHBaseCluster;
30 import org.apache.hadoop.hbase.NamespaceDescriptor;
31 import org.apache.hadoop.hbase.TableName;
32 import org.apache.hadoop.hbase.client.HTable;
33 import org.apache.hadoop.hbase.client.Put;
34 import org.apache.hadoop.hbase.regionserver.HRegion;
35 import org.apache.hadoop.hbase.regionserver.HRegionServer;
36 import org.apache.hadoop.hbase.testclassification.MediumTests;
37 import org.apache.hadoop.hbase.util.Bytes;
38 import org.apache.hadoop.hbase.util.JVMClusterUtil;
39 import org.junit.After;
40 import org.junit.Before;
41 import org.junit.Test;
42 import org.junit.experimental.categories.Category;
43
44
45
46
47
48 @Category(MediumTests.class)
49 public class TestGetLastFlushedSequenceId {
50
51 private final HBaseTestingUtility testUtil = new HBaseTestingUtility();
52
53 private final TableName tableName = TableName.valueOf(getClass().getSimpleName(), "test");
54
55 private final byte[] family = Bytes.toBytes("f1");
56
57 private final byte[][] families = new byte[][] { family };
58
59 @Before
60 public void setUp() throws Exception {
61 testUtil.getConfiguration().setInt("hbase.regionserver.msginterval", 1000);
62 testUtil.startMiniCluster(1, 1);
63 }
64
65 @After
66 public void tearDown() throws Exception {
67 testUtil.shutdownMiniCluster();
68 }
69
70 @Test
71 public void test() throws IOException, InterruptedException {
72 testUtil.getHBaseAdmin().createNamespace(
73 NamespaceDescriptor.create(tableName.getNamespaceAsString()).build());
74 HTable table = testUtil.createTable(tableName, families);
75 table.put(new Put(Bytes.toBytes("k")).add(family, Bytes.toBytes("q"), Bytes.toBytes("v")));
76 table.flushCommits();
77 MiniHBaseCluster cluster = testUtil.getMiniHBaseCluster();
78 List<JVMClusterUtil.RegionServerThread> rsts = cluster.getRegionServerThreads();
79 HRegion region = null;
80 for (int i = 0; i < cluster.getRegionServerThreads().size(); i++) {
81 HRegionServer hrs = rsts.get(i).getRegionServer();
82 for (HRegion r : hrs.getOnlineRegions(tableName)) {
83 region = r;
84 break;
85 }
86 }
87 assertNotNull(region);
88 Thread.sleep(2000);
89 assertEquals(HConstants.NO_SEQNUM, testUtil.getHBaseCluster().getMaster().getServerManager()
90 .getLastFlushedSequenceId(region.getRegionInfo().getEncodedNameAsBytes()));
91 testUtil.getHBaseAdmin().flush(tableName.getName());
92 Thread.sleep(2000);
93 assertTrue(testUtil.getHBaseCluster().getMaster().getServerManager()
94 .getLastFlushedSequenceId(region.getRegionInfo().getEncodedNameAsBytes()) > 0);
95 table.close();
96 }
97 }