1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17 package org.apache.hadoop.hbase.util;
18
19 import java.io.IOException;
20
21 import org.apache.commons.cli.CommandLine;
22 import org.apache.commons.logging.Log;
23 import org.apache.commons.logging.LogFactory;
24 import org.apache.hadoop.hbase.HBaseTestingUtility;
25 import org.apache.hadoop.hbase.HConstants;
26 import org.apache.hadoop.hbase.TableName;
27 import org.apache.hadoop.hbase.client.HTable;
28 import org.apache.hadoop.hbase.client.Result;
29 import org.apache.hadoop.hbase.client.ResultScanner;
30 import org.apache.hadoop.hbase.client.Scan;
31 import org.apache.hadoop.hbase.client.Table;
32 import org.apache.hadoop.hbase.io.compress.Compression;
33 import org.apache.hadoop.hbase.io.encoding.DataBlockEncoding;
34 import org.apache.hadoop.hbase.util.test.LoadTestDataGenerator;
35
36
37
38
39
40
41 public class RestartMetaTest extends AbstractHBaseTool {
42
43 private static final Log LOG = LogFactory.getLog(RestartMetaTest.class);
44
45
46 private static final int DEFAULT_NUM_RS = 2;
47
48
49 private static TableName TABLE_NAME =
50 TableName.valueOf("load_test");
51
52
53 private static final int SLEEP_SEC_AFTER_DATA_LOAD = 5;
54
55
56 private int numRegionServers;
57
58 private static final String OPT_NUM_RS = "num_rs";
59
60 private static final int NUM_DATANODES = 3;
61
62
63 private void loadData() throws IOException {
64 long startKey = 0;
65 long endKey = 100000;
66 int minColsPerKey = 5;
67 int maxColsPerKey = 15;
68 int minColDataSize = 256;
69 int maxColDataSize = 256 * 3;
70 int numThreads = 10;
71
72
73 System.out.printf("Key range %d .. %d\n", startKey, endKey);
74 System.out.printf("Number of Columns/Key: %d..%d\n", minColsPerKey,
75 maxColsPerKey);
76 System.out.printf("Data Size/Column: %d..%d bytes\n", minColDataSize,
77 maxColDataSize);
78 System.out.printf("Client Threads: %d\n", numThreads);
79
80
81 LoadTestDataGenerator dataGen = new MultiThreadedAction.DefaultDataGenerator(
82 minColDataSize, maxColDataSize, minColsPerKey, maxColsPerKey, LoadTestTool.COLUMN_FAMILY);
83 MultiThreadedWriter writer = new MultiThreadedWriter(dataGen, conf, TABLE_NAME);
84 writer.setMultiPut(true);
85 writer.start(startKey, endKey, numThreads);
86 System.out.printf("Started loading data...");
87 writer.waitForFinish();
88 System.out.printf("Finished loading data...");
89 }
90
91 @Override
92 protected int doWork() throws Exception {
93 ProcessBasedLocalHBaseCluster hbaseCluster =
94 new ProcessBasedLocalHBaseCluster(conf, NUM_DATANODES, numRegionServers);
95 hbaseCluster.startMiniDFS();
96
97
98 hbaseCluster.startHBase();
99
100
101 HBaseTestingUtility.createPreSplitLoadTestTable(conf, TABLE_NAME,
102 LoadTestTool.COLUMN_FAMILY, Compression.Algorithm.NONE,
103 DataBlockEncoding.NONE);
104
105 LOG.debug("Loading data....\n\n");
106 loadData();
107
108 LOG.debug("Sleeping for " + SLEEP_SEC_AFTER_DATA_LOAD +
109 " seconds....\n\n");
110 Threads.sleep(5 * SLEEP_SEC_AFTER_DATA_LOAD);
111
112 int metaRSPort = HBaseTestingUtility.getMetaRSPort(conf);
113
114 LOG.debug("Killing hbase:meta region server running on port " + metaRSPort);
115 hbaseCluster.killRegionServer(metaRSPort);
116 Threads.sleep(2000);
117
118 LOG.debug("Restarting region server running on port metaRSPort");
119 hbaseCluster.startRegionServer(metaRSPort);
120 Threads.sleep(2000);
121
122 LOG.debug("Trying to scan meta");
123
124 Table metaTable = new HTable(conf, TableName.META_TABLE_NAME);
125 ResultScanner scanner = metaTable.getScanner(new Scan());
126 Result result;
127 while ((result = scanner.next()) != null) {
128 LOG.info("Region assignment from META: "
129 + Bytes.toStringBinary(result.getRow())
130 + " => "
131 + Bytes.toStringBinary(result.getFamilyMap(HConstants.CATALOG_FAMILY)
132 .get(HConstants.SERVER_QUALIFIER)));
133 }
134 return 0;
135 }
136
137 @Override
138 protected void addOptions() {
139 addOptWithArg(OPT_NUM_RS, "Number of Region Servers");
140 addOptWithArg(LoadTestTool.OPT_DATA_BLOCK_ENCODING,
141 LoadTestTool.OPT_DATA_BLOCK_ENCODING_USAGE);
142 }
143
144 @Override
145 protected void processOptions(CommandLine cmd) {
146 numRegionServers = Integer.parseInt(cmd.getOptionValue(OPT_NUM_RS,
147 String.valueOf(DEFAULT_NUM_RS)));
148 }
149
150 public static void main(String[] args) {
151 new RestartMetaTest().doStaticMain(args);
152 }
153
154 }