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1   /**
2    *
3    * Licensed to the Apache Software Foundation (ASF) under one
4    * or more contributor license agreements.  See the NOTICE file
5    * distributed with this work for additional information
6    * regarding copyright ownership.  The ASF licenses this file
7    * to you under the Apache License, Version 2.0 (the
8    * "License"); you may not use this file except in compliance
9    * with the License.  You may obtain a copy of the License at
10   *
11   *     http://www.apache.org/licenses/LICENSE-2.0
12   *
13   * Unless required by applicable law or agreed to in writing, software
14   * distributed under the License is distributed on an "AS IS" BASIS,
15   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16   * See the License for the specific language governing permissions and
17   * limitations under the License.
18   */
19  package org.apache.hadoop.hbase.mapreduce;
20  
21  import java.io.File;
22  import java.io.IOException;
23  import java.util.ArrayList;
24  import java.util.List;
25  import java.util.Map;
26  import java.util.NavigableMap;
27  import java.util.TreeMap;
28  
29  import org.apache.commons.logging.Log;
30  import org.apache.commons.logging.LogFactory;
31  import org.apache.hadoop.conf.Configurable;
32  import org.apache.hadoop.conf.Configuration;
33  import org.apache.hadoop.fs.FileUtil;
34  import org.apache.hadoop.hbase.*;
35  import org.apache.hadoop.hbase.client.HBaseAdmin;
36  import org.apache.hadoop.hbase.client.HTable;
37  import org.apache.hadoop.hbase.client.Put;
38  import org.apache.hadoop.hbase.client.Result;
39  import org.apache.hadoop.hbase.client.ResultScanner;
40  import org.apache.hadoop.hbase.client.Scan;
41  import org.apache.hadoop.hbase.client.Durability;
42  import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
43  import org.apache.hadoop.hbase.testclassification.LargeTests;
44  import org.apache.hadoop.hbase.util.Bytes;
45  import org.apache.hadoop.io.MapWritable;
46  import org.apache.hadoop.io.Text;
47  import org.apache.hadoop.mapreduce.Job;
48  import org.apache.hadoop.mapreduce.lib.output.NullOutputFormat;
49  import org.junit.After;
50  import org.junit.AfterClass;
51  import org.junit.Before;
52  import org.junit.BeforeClass;
53  import org.junit.Test;
54  import org.junit.experimental.categories.Category;
55  
56  @Category(LargeTests.class)
57  public class TestTimeRangeMapRed {
58    private final static Log log = LogFactory.getLog(TestTimeRangeMapRed.class);
59    private static final HBaseTestingUtility UTIL =
60      new HBaseTestingUtility();
61    private HBaseAdmin admin;
62  
63    private static final byte [] KEY = Bytes.toBytes("row1");
64    private static final NavigableMap<Long, Boolean> TIMESTAMP =
65      new TreeMap<Long, Boolean>();
66    static {
67      TIMESTAMP.put((long)1245620000, false);
68      TIMESTAMP.put((long)1245620005, true); // include
69      TIMESTAMP.put((long)1245620010, true); // include
70      TIMESTAMP.put((long)1245620055, true); // include
71      TIMESTAMP.put((long)1245620100, true); // include
72      TIMESTAMP.put((long)1245620150, false);
73      TIMESTAMP.put((long)1245620250, false);
74    }
75    static final long MINSTAMP = 1245620005;
76    static final long MAXSTAMP = 1245620100 + 1; // maxStamp itself is excluded. so increment it.
77  
78    static final byte[] TABLE_NAME = Bytes.toBytes("table123");
79    static final byte[] FAMILY_NAME = Bytes.toBytes("text");
80    static final byte[] COLUMN_NAME = Bytes.toBytes("input");
81  
82    @BeforeClass
83    public static void beforeClass() throws Exception {
84      UTIL.startMiniCluster();
85    }
86  
87    @AfterClass
88    public static void afterClass() throws Exception {
89      UTIL.shutdownMiniCluster();
90    }
91  
92    @Before
93    public void before() throws Exception {
94      this.admin = new HBaseAdmin(UTIL.getConfiguration());
95    }
96  
97    @After
98    public void after() throws IOException {
99      this.admin.close();
100   }
101 
102   private static class ProcessTimeRangeMapper
103   extends TableMapper<ImmutableBytesWritable, MapWritable>
104   implements Configurable {
105 
106     private Configuration conf = null;
107     private HTable table = null;
108 
109     @Override
110     public void map(ImmutableBytesWritable key, Result result,
111         Context context)
112     throws IOException {
113       List<Long> tsList = new ArrayList<Long>();
114       for (Cell kv : result.listCells()) {
115         tsList.add(kv.getTimestamp());
116       }
117 
118       for (Long ts : tsList) {
119         Put put = new Put(key.get());
120         put.setDurability(Durability.SKIP_WAL);
121         put.add(FAMILY_NAME, COLUMN_NAME, ts, Bytes.toBytes(true));
122         table.put(put);
123       }
124       table.flushCommits();
125     }
126 
127     @Override
128     public Configuration getConf() {
129       return conf;
130     }
131 
132     @Override
133     public void setConf(Configuration configuration) {
134       this.conf = configuration;
135       try {
136         table = new HTable(HBaseConfiguration.create(conf), TABLE_NAME);
137       } catch (IOException e) {
138         e.printStackTrace();
139       }
140     }
141   }
142 
143   @Test
144   public void testTimeRangeMapRed()
145   throws IOException, InterruptedException, ClassNotFoundException {
146     final HTableDescriptor desc = new HTableDescriptor(TableName.valueOf(TABLE_NAME));
147     final HColumnDescriptor col = new HColumnDescriptor(FAMILY_NAME);
148     col.setMaxVersions(Integer.MAX_VALUE);
149     desc.addFamily(col);
150     admin.createTable(desc);
151     HTable table = new HTable(UTIL.getConfiguration(), desc.getTableName());
152     prepareTest(table);
153     runTestOnTable();
154     verify(table);
155   }
156 
157   private void prepareTest(final HTable table) throws IOException {
158     for (Map.Entry<Long, Boolean> entry : TIMESTAMP.entrySet()) {
159       Put put = new Put(KEY);
160       put.setDurability(Durability.SKIP_WAL);
161       put.add(FAMILY_NAME, COLUMN_NAME, entry.getKey(), Bytes.toBytes(false));
162       table.put(put);
163     }
164     table.flushCommits();
165   }
166 
167   private void runTestOnTable()
168   throws IOException, InterruptedException, ClassNotFoundException {
169     UTIL.startMiniMapReduceCluster();
170     Job job = null;
171     try {
172       job = new Job(UTIL.getConfiguration(), "test123");
173       job.setOutputFormatClass(NullOutputFormat.class);
174       job.setNumReduceTasks(0);
175       Scan scan = new Scan();
176       scan.addColumn(FAMILY_NAME, COLUMN_NAME);
177       scan.setTimeRange(MINSTAMP, MAXSTAMP);
178       scan.setMaxVersions();
179       TableMapReduceUtil.initTableMapperJob(Bytes.toString(TABLE_NAME),
180         scan, ProcessTimeRangeMapper.class, Text.class, Text.class, job);
181       job.waitForCompletion(true);
182     } catch (IOException e) {
183       // TODO Auto-generated catch block
184       e.printStackTrace();
185     } finally {
186       UTIL.shutdownMiniMapReduceCluster();
187       if (job != null) {
188         FileUtil.fullyDelete(
189           new File(job.getConfiguration().get("hadoop.tmp.dir")));
190       }
191     }
192   }
193 
194   private void verify(final HTable table) throws IOException {
195     Scan scan = new Scan();
196     scan.addColumn(FAMILY_NAME, COLUMN_NAME);
197     scan.setMaxVersions(1);
198     ResultScanner scanner = table.getScanner(scan);
199     for (Result r: scanner) {
200       for (Cell kv : r.listCells()) {
201         log.debug(Bytes.toString(r.getRow()) + "\t" + Bytes.toString(CellUtil.cloneFamily(kv))
202             + "\t" + Bytes.toString(CellUtil.cloneQualifier(kv))
203             + "\t" + kv.getTimestamp() + "\t" + Bytes.toBoolean(CellUtil.cloneValue(kv)));
204         org.junit.Assert.assertEquals(TIMESTAMP.get(kv.getTimestamp()),
205           (Boolean)Bytes.toBoolean(CellUtil.cloneValue(kv)));
206       }
207     }
208     scanner.close();
209   }
210 
211 }
212