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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 static org.junit.Assert.assertEquals;
22  import static org.junit.Assert.assertFalse;
23  import static org.junit.Assert.assertNotNull;
24  import static org.junit.Assert.assertNotSame;
25  import static org.junit.Assert.assertTrue;
26  import static org.junit.Assert.fail;
27  
28  import java.io.IOException;
29  import java.util.Arrays;
30  import java.util.HashMap;
31  import java.util.Map;
32  import java.util.Map.Entry;
33  import java.util.Random;
34  import java.util.Set;
35  import java.util.concurrent.Callable;
36  
37  import org.apache.commons.logging.Log;
38  import org.apache.commons.logging.LogFactory;
39  import org.apache.hadoop.conf.Configuration;
40  import org.apache.hadoop.fs.FileStatus;
41  import org.apache.hadoop.fs.FileSystem;
42  import org.apache.hadoop.fs.Path;
43  import org.apache.hadoop.hbase.Cell;
44  import org.apache.hadoop.hbase.CellUtil;
45  import org.apache.hadoop.hbase.CompatibilitySingletonFactory;
46  import org.apache.hadoop.hbase.HBaseConfiguration;
47  import org.apache.hadoop.hbase.HBaseTestingUtility;
48  import org.apache.hadoop.hbase.HColumnDescriptor;
49  import org.apache.hadoop.hbase.HConstants;
50  import org.apache.hadoop.hbase.HDFSBlocksDistribution;
51  import org.apache.hadoop.hbase.HTableDescriptor;
52  import org.apache.hadoop.hbase.HadoopShims;
53  import org.apache.hadoop.hbase.KeyValue;
54  import org.apache.hadoop.hbase.testclassification.LargeTests;
55  import org.apache.hadoop.hbase.PerformanceEvaluation;
56  import org.apache.hadoop.hbase.TableName;
57  import org.apache.hadoop.hbase.client.HBaseAdmin;
58  import org.apache.hadoop.hbase.client.HTable;
59  import org.apache.hadoop.hbase.client.Put;
60  import org.apache.hadoop.hbase.client.Result;
61  import org.apache.hadoop.hbase.client.ResultScanner;
62  import org.apache.hadoop.hbase.client.Scan;
63  import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
64  import org.apache.hadoop.hbase.io.compress.Compression;
65  import org.apache.hadoop.hbase.io.compress.Compression.Algorithm;
66  import org.apache.hadoop.hbase.io.encoding.DataBlockEncoding;
67  import org.apache.hadoop.hbase.io.hfile.CacheConfig;
68  import org.apache.hadoop.hbase.io.hfile.HFile;
69  import org.apache.hadoop.hbase.io.hfile.HFile.Reader;
70  import org.apache.hadoop.hbase.regionserver.BloomType;
71  import org.apache.hadoop.hbase.regionserver.HRegion;
72  import org.apache.hadoop.hbase.regionserver.StoreFile;
73  import org.apache.hadoop.hbase.regionserver.TimeRangeTracker;
74  import org.apache.hadoop.hbase.util.Bytes;
75  import org.apache.hadoop.hbase.util.FSUtils;
76  import org.apache.hadoop.hbase.util.Threads;
77  import org.apache.hadoop.hbase.util.Writables;
78  import org.apache.hadoop.io.NullWritable;
79  import org.apache.hadoop.mapreduce.Job;
80  import org.apache.hadoop.mapreduce.Mapper;
81  import org.apache.hadoop.mapreduce.RecordWriter;
82  import org.apache.hadoop.mapreduce.TaskAttemptContext;
83  import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
84  import org.junit.Ignore;
85  import org.junit.Test;
86  import org.junit.experimental.categories.Category;
87  import org.mockito.Mockito;
88  
89  /**
90   * Simple test for {@link CellSortReducer} and {@link HFileOutputFormat2}.
91   * Sets up and runs a mapreduce job that writes hfile output.
92   * Creates a few inner classes to implement splits and an inputformat that
93   * emits keys and values like those of {@link PerformanceEvaluation}.
94   */
95  @Category(LargeTests.class)
96  public class TestHFileOutputFormat2  {
97    private final static int ROWSPERSPLIT = 1024;
98  
99    private static final byte[][] FAMILIES
100     = { Bytes.add(PerformanceEvaluation.FAMILY_NAME, Bytes.toBytes("-A"))
101       , Bytes.add(PerformanceEvaluation.FAMILY_NAME, Bytes.toBytes("-B"))};
102   private static final TableName TABLE_NAME =
103       TableName.valueOf("TestTable");
104 
105   private HBaseTestingUtility util = new HBaseTestingUtility();
106 
107   private static Log LOG = LogFactory.getLog(TestHFileOutputFormat2.class);
108 
109   /**
110    * Simple mapper that makes KeyValue output.
111    */
112   static class RandomKVGeneratingMapper
113       extends Mapper<NullWritable, NullWritable,
114                  ImmutableBytesWritable, Cell> {
115 
116     private int keyLength;
117     private static final int KEYLEN_DEFAULT=10;
118     private static final String KEYLEN_CONF="randomkv.key.length";
119 
120     private int valLength;
121     private static final int VALLEN_DEFAULT=10;
122     private static final String VALLEN_CONF="randomkv.val.length";
123 
124     @Override
125     protected void setup(Context context) throws IOException,
126         InterruptedException {
127       super.setup(context);
128 
129       Configuration conf = context.getConfiguration();
130       keyLength = conf.getInt(KEYLEN_CONF, KEYLEN_DEFAULT);
131       valLength = conf.getInt(VALLEN_CONF, VALLEN_DEFAULT);
132     }
133 
134     protected void map(
135         NullWritable n1, NullWritable n2,
136         Mapper<NullWritable, NullWritable,
137                ImmutableBytesWritable,Cell>.Context context)
138         throws java.io.IOException ,InterruptedException
139     {
140 
141       byte keyBytes[] = new byte[keyLength];
142       byte valBytes[] = new byte[valLength];
143 
144       int taskId = context.getTaskAttemptID().getTaskID().getId();
145       assert taskId < Byte.MAX_VALUE : "Unit tests dont support > 127 tasks!";
146 
147       Random random = new Random();
148       for (int i = 0; i < ROWSPERSPLIT; i++) {
149 
150         random.nextBytes(keyBytes);
151         // Ensure that unique tasks generate unique keys
152         keyBytes[keyLength - 1] = (byte)(taskId & 0xFF);
153         random.nextBytes(valBytes);
154         ImmutableBytesWritable key = new ImmutableBytesWritable(keyBytes);
155 
156         for (byte[] family : TestHFileOutputFormat2.FAMILIES) {
157           Cell kv = new KeyValue(keyBytes, family,
158               PerformanceEvaluation.QUALIFIER_NAME, valBytes);
159           context.write(key, kv);
160         }
161       }
162     }
163   }
164 
165   private void setupRandomGeneratorMapper(Job job) {
166     job.setInputFormatClass(NMapInputFormat.class);
167     job.setMapperClass(RandomKVGeneratingMapper.class);
168     job.setMapOutputKeyClass(ImmutableBytesWritable.class);
169     job.setMapOutputValueClass(KeyValue.class);
170   }
171 
172   /**
173    * Test that {@link HFileOutputFormat2} RecordWriter amends timestamps if
174    * passed a keyvalue whose timestamp is {@link HConstants#LATEST_TIMESTAMP}.
175    * @see <a href="https://issues.apache.org/jira/browse/HBASE-2615">HBASE-2615</a>
176    */
177   @Test
178   public void test_LATEST_TIMESTAMP_isReplaced()
179   throws Exception {
180     Configuration conf = new Configuration(this.util.getConfiguration());
181     RecordWriter<ImmutableBytesWritable, Cell> writer = null;
182     TaskAttemptContext context = null;
183     Path dir =
184       util.getDataTestDir("test_LATEST_TIMESTAMP_isReplaced");
185     try {
186       Job job = new Job(conf);
187       FileOutputFormat.setOutputPath(job, dir);
188       context = createTestTaskAttemptContext(job);
189       HFileOutputFormat2 hof = new HFileOutputFormat2();
190       writer = hof.getRecordWriter(context);
191       final byte [] b = Bytes.toBytes("b");
192 
193       // Test 1.  Pass a KV that has a ts of LATEST_TIMESTAMP.  It should be
194       // changed by call to write.  Check all in kv is same but ts.
195       KeyValue kv = new KeyValue(b, b, b);
196       KeyValue original = kv.clone();
197       writer.write(new ImmutableBytesWritable(), kv);
198       assertFalse(original.equals(kv));
199       assertTrue(Bytes.equals(CellUtil.cloneRow(original), CellUtil.cloneRow(kv)));
200       assertTrue(Bytes.equals(CellUtil.cloneFamily(original), CellUtil.cloneFamily(kv)));
201       assertTrue(Bytes.equals(CellUtil.cloneQualifier(original), CellUtil.cloneQualifier(kv)));
202       assertNotSame(original.getTimestamp(), kv.getTimestamp());
203       assertNotSame(HConstants.LATEST_TIMESTAMP, kv.getTimestamp());
204 
205       // Test 2. Now test passing a kv that has explicit ts.  It should not be
206       // changed by call to record write.
207       kv = new KeyValue(b, b, b, kv.getTimestamp() - 1, b);
208       original = kv.clone();
209       writer.write(new ImmutableBytesWritable(), kv);
210       assertTrue(original.equals(kv));
211     } finally {
212       if (writer != null && context != null) writer.close(context);
213       dir.getFileSystem(conf).delete(dir, true);
214     }
215   }
216 
217   private TaskAttemptContext createTestTaskAttemptContext(final Job job)
218   throws IOException, Exception {
219     HadoopShims hadoop = CompatibilitySingletonFactory.getInstance(HadoopShims.class);
220     TaskAttemptContext context = hadoop.createTestTaskAttemptContext(
221       job, "attempt_201402131733_0001_m_000000_0");
222     return context;
223   }
224 
225   /*
226    * Test that {@link HFileOutputFormat2} creates an HFile with TIMERANGE
227    * metadata used by time-restricted scans.
228    */
229   @Test
230   public void test_TIMERANGE() throws Exception {
231     Configuration conf = new Configuration(this.util.getConfiguration());
232     RecordWriter<ImmutableBytesWritable, Cell> writer = null;
233     TaskAttemptContext context = null;
234     Path dir =
235       util.getDataTestDir("test_TIMERANGE_present");
236     LOG.info("Timerange dir writing to dir: "+ dir);
237     try {
238       // build a record writer using HFileOutputFormat2
239       Job job = new Job(conf);
240       FileOutputFormat.setOutputPath(job, dir);
241       context = createTestTaskAttemptContext(job);
242       HFileOutputFormat2 hof = new HFileOutputFormat2();
243       writer = hof.getRecordWriter(context);
244 
245       // Pass two key values with explicit times stamps
246       final byte [] b = Bytes.toBytes("b");
247 
248       // value 1 with timestamp 2000
249       KeyValue kv = new KeyValue(b, b, b, 2000, b);
250       KeyValue original = kv.clone();
251       writer.write(new ImmutableBytesWritable(), kv);
252       assertEquals(original,kv);
253 
254       // value 2 with timestamp 1000
255       kv = new KeyValue(b, b, b, 1000, b);
256       original = kv.clone();
257       writer.write(new ImmutableBytesWritable(), kv);
258       assertEquals(original, kv);
259 
260       // verify that the file has the proper FileInfo.
261       writer.close(context);
262 
263       // the generated file lives 1 directory down from the attempt directory
264       // and is the only file, e.g.
265       // _attempt__0000_r_000000_0/b/1979617994050536795
266       FileSystem fs = FileSystem.get(conf);
267       Path attemptDirectory = hof.getDefaultWorkFile(context, "").getParent();
268       FileStatus[] sub1 = fs.listStatus(attemptDirectory);
269       FileStatus[] file = fs.listStatus(sub1[0].getPath());
270 
271       // open as HFile Reader and pull out TIMERANGE FileInfo.
272       HFile.Reader rd = HFile.createReader(fs, file[0].getPath(),
273           new CacheConfig(conf), conf);
274       Map<byte[],byte[]> finfo = rd.loadFileInfo();
275       byte[] range = finfo.get("TIMERANGE".getBytes());
276       assertNotNull(range);
277 
278       // unmarshall and check values.
279       TimeRangeTracker timeRangeTracker = new TimeRangeTracker();
280       Writables.copyWritable(range, timeRangeTracker);
281       LOG.info(timeRangeTracker.getMin() + "...." + timeRangeTracker.getMax());
282       assertEquals(1000, timeRangeTracker.getMin());
283       assertEquals(2000, timeRangeTracker.getMax());
284       rd.close();
285     } finally {
286       if (writer != null && context != null) writer.close(context);
287       dir.getFileSystem(conf).delete(dir, true);
288     }
289   }
290 
291   /**
292    * Run small MR job.
293    */
294   @Test
295   public void testWritingPEData() throws Exception {
296     Configuration conf = util.getConfiguration();
297     Path testDir = util.getDataTestDirOnTestFS("testWritingPEData");
298     FileSystem fs = testDir.getFileSystem(conf);
299 
300     // Set down this value or we OOME in eclipse.
301     conf.setInt("io.sort.mb", 20);
302     // Write a few files.
303     conf.setLong(HConstants.HREGION_MAX_FILESIZE, 64 * 1024);
304 
305     Job job = new Job(conf, "testWritingPEData");
306     setupRandomGeneratorMapper(job);
307     // This partitioner doesn't work well for number keys but using it anyways
308     // just to demonstrate how to configure it.
309     byte[] startKey = new byte[RandomKVGeneratingMapper.KEYLEN_DEFAULT];
310     byte[] endKey = new byte[RandomKVGeneratingMapper.KEYLEN_DEFAULT];
311 
312     Arrays.fill(startKey, (byte)0);
313     Arrays.fill(endKey, (byte)0xff);
314 
315     job.setPartitionerClass(SimpleTotalOrderPartitioner.class);
316     // Set start and end rows for partitioner.
317     SimpleTotalOrderPartitioner.setStartKey(job.getConfiguration(), startKey);
318     SimpleTotalOrderPartitioner.setEndKey(job.getConfiguration(), endKey);
319     job.setReducerClass(KeyValueSortReducer.class);
320     job.setOutputFormatClass(HFileOutputFormat2.class);
321     job.setNumReduceTasks(4);
322     job.getConfiguration().setStrings("io.serializations", conf.get("io.serializations"),
323         MutationSerialization.class.getName(), ResultSerialization.class.getName(),
324         KeyValueSerialization.class.getName());
325 
326     FileOutputFormat.setOutputPath(job, testDir);
327     assertTrue(job.waitForCompletion(false));
328     FileStatus [] files = fs.listStatus(testDir);
329     assertTrue(files.length > 0);
330   }
331 
332   @Test
333   public void testJobConfiguration() throws Exception {
334     Configuration conf = new Configuration(this.util.getConfiguration());
335     conf.set(HConstants.TEMPORARY_FS_DIRECTORY_KEY, util.getDataTestDir("testJobConfiguration")
336         .toString());
337     Job job = new Job(conf);
338     job.setWorkingDirectory(util.getDataTestDir("testJobConfiguration"));
339     HTable table = Mockito.mock(HTable.class);
340     setupMockStartKeys(table);
341     setupMockTableName(table);
342     HFileOutputFormat2.configureIncrementalLoad(job, table);
343     assertEquals(job.getNumReduceTasks(), 4);
344   }
345 
346   private byte [][] generateRandomStartKeys(int numKeys) {
347     Random random = new Random();
348     byte[][] ret = new byte[numKeys][];
349     // first region start key is always empty
350     ret[0] = HConstants.EMPTY_BYTE_ARRAY;
351     for (int i = 1; i < numKeys; i++) {
352       ret[i] = PerformanceEvaluation.generateData(random, PerformanceEvaluation.DEFAULT_VALUE_LENGTH);
353     }
354     return ret;
355   }
356 
357   @Test
358   public void testMRIncrementalLoad() throws Exception {
359     LOG.info("\nStarting test testMRIncrementalLoad\n");
360     doIncrementalLoadTest(false, false);
361   }
362 
363   @Test
364   public void testMRIncrementalLoadWithSplit() throws Exception {
365     LOG.info("\nStarting test testMRIncrementalLoadWithSplit\n");
366     doIncrementalLoadTest(true, false);
367   }
368 
369   /**
370    * Test for HFileOutputFormat2.LOCALITY_SENSITIVE_CONF_KEY = true This test could only check the
371    * correctness of original logic if LOCALITY_SENSITIVE_CONF_KEY is set to true. Because
372    * MiniHBaseCluster always run with single hostname (and different ports), it's not possible to
373    * check the region locality by comparing region locations and DN hostnames. When MiniHBaseCluster
374    * supports explicit hostnames parameter (just like MiniDFSCluster does), we could test region
375    * locality features more easily.
376    */
377   @Test
378   public void testMRIncrementalLoadWithLocality() throws Exception {
379     LOG.info("\nStarting test testMRIncrementalLoadWithLocality\n");
380     doIncrementalLoadTest(false, true);
381     doIncrementalLoadTest(true, true);
382   }
383 
384   private void doIncrementalLoadTest(boolean shouldChangeRegions, boolean shouldKeepLocality)
385       throws Exception {
386     util = new HBaseTestingUtility();
387     Configuration conf = util.getConfiguration();
388     conf.setBoolean(HFileOutputFormat2.LOCALITY_SENSITIVE_CONF_KEY, shouldKeepLocality);
389     int hostCount = 1;
390     int regionNum = 5;
391     if (shouldKeepLocality) {
392       // We should change host count higher than hdfs replica count when MiniHBaseCluster supports
393       // explicit hostnames parameter just like MiniDFSCluster does.
394       hostCount = 3;
395       regionNum = 20;
396     }
397 
398     byte[][] startKeys = generateRandomStartKeys(regionNum);
399     String[] hostnames = new String[hostCount];
400     for (int i = 0; i < hostCount; ++i) {
401       hostnames[i] = "datanode_" + i;
402     }
403 
404     Path testDir = util.getDataTestDirOnTestFS("testLocalMRIncrementalLoad");
405     HBaseAdmin admin = null;
406     try {
407       util.startMiniCluster(1, hostCount, hostnames);
408       admin = new HBaseAdmin(conf);
409       HTable table = util.createTable(TABLE_NAME, FAMILIES);
410       assertEquals("Should start with empty table", 0, util.countRows(table));
411       int numRegions =
412           util.createMultiRegions(util.getConfiguration(), table, FAMILIES[0], startKeys);
413       assertEquals("Should make " + regionNum + " regions", numRegions, regionNum);
414 
415       // Generate the bulk load files
416       util.startMiniMapReduceCluster();
417       runIncrementalPELoad(conf, table, testDir);
418       // This doesn't write into the table, just makes files
419       assertEquals("HFOF should not touch actual table", 0, util.countRows(table));
420 
421       // Make sure that a directory was created for every CF
422       int dir = 0;
423       for (FileStatus f : testDir.getFileSystem(conf).listStatus(testDir)) {
424         for (byte[] family : FAMILIES) {
425           if (Bytes.toString(family).equals(f.getPath().getName())) {
426             ++dir;
427           }
428         }
429       }
430       assertEquals("Column family not found in FS.", FAMILIES.length, dir);
431 
432       // handle the split case
433       if (shouldChangeRegions) {
434         LOG.info("Changing regions in table");
435         admin.disableTable(table.getTableName());
436         while (util.getMiniHBaseCluster().getMaster().getAssignmentManager().getRegionStates()
437             .isRegionsInTransition()) {
438           Threads.sleep(200);
439           LOG.info("Waiting on table to finish disabling");
440         }
441         byte[][] newStartKeys = generateRandomStartKeys(15);
442         util.createMultiRegions(util.getConfiguration(), table, FAMILIES[0], newStartKeys);
443         admin.enableTable(table.getTableName());
444         while (table.getRegionLocations().size() != 15
445             || !admin.isTableAvailable(table.getTableName())) {
446           Thread.sleep(200);
447           LOG.info("Waiting for new region assignment to happen");
448         }
449       }
450 
451       // Perform the actual load
452       new LoadIncrementalHFiles(conf).doBulkLoad(testDir, table);
453 
454       // Ensure data shows up
455       int expectedRows = NMapInputFormat.getNumMapTasks(conf) * ROWSPERSPLIT;
456       assertEquals("LoadIncrementalHFiles should put expected data in table", expectedRows,
457         util.countRows(table));
458       Scan scan = new Scan();
459       ResultScanner results = table.getScanner(scan);
460       for (Result res : results) {
461         assertEquals(FAMILIES.length, res.rawCells().length);
462         Cell first = res.rawCells()[0];
463         for (Cell kv : res.rawCells()) {
464           assertTrue(CellUtil.matchingRow(first, kv));
465           assertTrue(Bytes.equals(CellUtil.cloneValue(first), CellUtil.cloneValue(kv)));
466         }
467       }
468       results.close();
469       String tableDigestBefore = util.checksumRows(table);
470 
471       // Check region locality
472       HDFSBlocksDistribution hbd = new HDFSBlocksDistribution();
473       for (HRegion region : util.getHBaseCluster().getRegions(TABLE_NAME)) {
474         hbd.add(region.getHDFSBlocksDistribution());
475       }
476       for (String hostname : hostnames) {
477         float locality = hbd.getBlockLocalityIndex(hostname);
478         LOG.info("locality of [" + hostname + "]: " + locality);
479         assertEquals(100, (int) (locality * 100));
480       }
481 
482       // Cause regions to reopen
483       admin.disableTable(TABLE_NAME);
484       while (!admin.isTableDisabled(TABLE_NAME)) {
485         Thread.sleep(200);
486         LOG.info("Waiting for table to disable");
487       }
488       admin.enableTable(TABLE_NAME);
489       util.waitTableAvailable(TABLE_NAME.getName());
490       assertEquals("Data should remain after reopening of regions", tableDigestBefore,
491         util.checksumRows(table));
492     } finally {
493       util.deleteTable(TABLE_NAME);
494       testDir.getFileSystem(conf).delete(testDir, true);
495       if (admin != null) admin.close();
496       util.shutdownMiniMapReduceCluster();
497       util.shutdownMiniCluster();
498     }
499   }
500 
501   private void runIncrementalPELoad(
502       Configuration conf, HTable table, Path outDir)
503   throws Exception {
504     Job job = new Job(conf, "testLocalMRIncrementalLoad");
505     job.setWorkingDirectory(util.getDataTestDirOnTestFS("runIncrementalPELoad"));
506     job.getConfiguration().setStrings("io.serializations", conf.get("io.serializations"),
507         MutationSerialization.class.getName(), ResultSerialization.class.getName(),
508         KeyValueSerialization.class.getName());
509     setupRandomGeneratorMapper(job);
510     HFileOutputFormat2.configureIncrementalLoad(job, table);
511     FileOutputFormat.setOutputPath(job, outDir);
512 
513     assertFalse(util.getTestFileSystem().exists(outDir)) ;
514 
515     assertEquals(table.getRegionLocations().size(), job.getNumReduceTasks());
516 
517     assertTrue(job.waitForCompletion(true));
518   }
519 
520   /**
521    * Test for {@link HFileOutputFormat2#configureCompression(HTable,
522    * Configuration)} and {@link HFileOutputFormat2#createFamilyCompressionMap
523    * (Configuration)}.
524    * Tests that the compression map is correctly serialized into
525    * and deserialized from configuration
526    *
527    * @throws IOException
528    */
529   @Test
530   public void testSerializeDeserializeFamilyCompressionMap() throws IOException {
531     for (int numCfs = 0; numCfs <= 3; numCfs++) {
532       Configuration conf = new Configuration(this.util.getConfiguration());
533       Map<String, Compression.Algorithm> familyToCompression =
534           getMockColumnFamiliesForCompression(numCfs);
535       HTable table = Mockito.mock(HTable.class);
536       setupMockColumnFamiliesForCompression(table, familyToCompression);
537       HFileOutputFormat2.configureCompression(table, conf);
538 
539       // read back family specific compression setting from the configuration
540       Map<byte[], Algorithm> retrievedFamilyToCompressionMap = HFileOutputFormat2
541           .createFamilyCompressionMap(conf);
542 
543       // test that we have a value for all column families that matches with the
544       // used mock values
545       for (Entry<String, Algorithm> entry : familyToCompression.entrySet()) {
546         assertEquals("Compression configuration incorrect for column family:"
547             + entry.getKey(), entry.getValue(),
548             retrievedFamilyToCompressionMap.get(entry.getKey().getBytes()));
549       }
550     }
551   }
552 
553   private void setupMockColumnFamiliesForCompression(HTable table,
554       Map<String, Compression.Algorithm> familyToCompression) throws IOException {
555     HTableDescriptor mockTableDescriptor = new HTableDescriptor(TABLE_NAME);
556     for (Entry<String, Compression.Algorithm> entry : familyToCompression.entrySet()) {
557       mockTableDescriptor.addFamily(new HColumnDescriptor(entry.getKey())
558           .setMaxVersions(1)
559           .setCompressionType(entry.getValue())
560           .setBlockCacheEnabled(false)
561           .setTimeToLive(0));
562     }
563     Mockito.doReturn(mockTableDescriptor).when(table).getTableDescriptor();
564   }
565 
566   /**
567    * @return a map from column family names to compression algorithms for
568    *         testing column family compression. Column family names have special characters
569    */
570   private Map<String, Compression.Algorithm>
571       getMockColumnFamiliesForCompression (int numCfs) {
572     Map<String, Compression.Algorithm> familyToCompression
573       = new HashMap<String, Compression.Algorithm>();
574     // use column family names having special characters
575     if (numCfs-- > 0) {
576       familyToCompression.put("Family1!@#!@#&", Compression.Algorithm.LZO);
577     }
578     if (numCfs-- > 0) {
579       familyToCompression.put("Family2=asdads&!AASD", Compression.Algorithm.SNAPPY);
580     }
581     if (numCfs-- > 0) {
582       familyToCompression.put("Family2=asdads&!AASD", Compression.Algorithm.GZ);
583     }
584     if (numCfs-- > 0) {
585       familyToCompression.put("Family3", Compression.Algorithm.NONE);
586     }
587     return familyToCompression;
588   }
589 
590 
591   /**
592    * Test for {@link HFileOutputFormat2#configureBloomType(HTable,
593    * Configuration)} and {@link HFileOutputFormat2#createFamilyBloomTypeMap
594    * (Configuration)}.
595    * Tests that the compression map is correctly serialized into
596    * and deserialized from configuration
597    *
598    * @throws IOException
599    */
600   @Test
601   public void testSerializeDeserializeFamilyBloomTypeMap() throws IOException {
602     for (int numCfs = 0; numCfs <= 2; numCfs++) {
603       Configuration conf = new Configuration(this.util.getConfiguration());
604       Map<String, BloomType> familyToBloomType =
605           getMockColumnFamiliesForBloomType(numCfs);
606       HTable table = Mockito.mock(HTable.class);
607       setupMockColumnFamiliesForBloomType(table,
608           familyToBloomType);
609       HFileOutputFormat2.configureBloomType(table, conf);
610 
611       // read back family specific data block encoding settings from the
612       // configuration
613       Map<byte[], BloomType> retrievedFamilyToBloomTypeMap =
614           HFileOutputFormat2
615               .createFamilyBloomTypeMap(conf);
616 
617       // test that we have a value for all column families that matches with the
618       // used mock values
619       for (Entry<String, BloomType> entry : familyToBloomType.entrySet()) {
620         assertEquals("BloomType configuration incorrect for column family:"
621             + entry.getKey(), entry.getValue(),
622             retrievedFamilyToBloomTypeMap.get(entry.getKey().getBytes()));
623       }
624     }
625   }
626 
627   private void setupMockColumnFamiliesForBloomType(HTable table,
628       Map<String, BloomType> familyToDataBlockEncoding) throws IOException {
629     HTableDescriptor mockTableDescriptor = new HTableDescriptor(TABLE_NAME);
630     for (Entry<String, BloomType> entry : familyToDataBlockEncoding.entrySet()) {
631       mockTableDescriptor.addFamily(new HColumnDescriptor(entry.getKey())
632           .setMaxVersions(1)
633           .setBloomFilterType(entry.getValue())
634           .setBlockCacheEnabled(false)
635           .setTimeToLive(0));
636     }
637     Mockito.doReturn(mockTableDescriptor).when(table).getTableDescriptor();
638   }
639 
640   /**
641    * @return a map from column family names to compression algorithms for
642    *         testing column family compression. Column family names have special characters
643    */
644   private Map<String, BloomType>
645   getMockColumnFamiliesForBloomType (int numCfs) {
646     Map<String, BloomType> familyToBloomType =
647         new HashMap<String, BloomType>();
648     // use column family names having special characters
649     if (numCfs-- > 0) {
650       familyToBloomType.put("Family1!@#!@#&", BloomType.ROW);
651     }
652     if (numCfs-- > 0) {
653       familyToBloomType.put("Family2=asdads&!AASD",
654           BloomType.ROWCOL);
655     }
656     if (numCfs-- > 0) {
657       familyToBloomType.put("Family3", BloomType.NONE);
658     }
659     return familyToBloomType;
660   }
661 
662   /**
663    * Test for {@link HFileOutputFormat2#configureBlockSize(HTable,
664    * Configuration)} and {@link HFileOutputFormat2#createFamilyBlockSizeMap
665    * (Configuration)}.
666    * Tests that the compression map is correctly serialized into
667    * and deserialized from configuration
668    *
669    * @throws IOException
670    */
671   @Test
672   public void testSerializeDeserializeFamilyBlockSizeMap() throws IOException {
673     for (int numCfs = 0; numCfs <= 3; numCfs++) {
674       Configuration conf = new Configuration(this.util.getConfiguration());
675       Map<String, Integer> familyToBlockSize =
676           getMockColumnFamiliesForBlockSize(numCfs);
677       HTable table = Mockito.mock(HTable.class);
678       setupMockColumnFamiliesForBlockSize(table,
679           familyToBlockSize);
680       HFileOutputFormat2.configureBlockSize(table, conf);
681 
682       // read back family specific data block encoding settings from the
683       // configuration
684       Map<byte[], Integer> retrievedFamilyToBlockSizeMap =
685           HFileOutputFormat2
686               .createFamilyBlockSizeMap(conf);
687 
688       // test that we have a value for all column families that matches with the
689       // used mock values
690       for (Entry<String, Integer> entry : familyToBlockSize.entrySet()
691           ) {
692         assertEquals("BlockSize configuration incorrect for column family:"
693             + entry.getKey(), entry.getValue(),
694             retrievedFamilyToBlockSizeMap.get(entry.getKey().getBytes()));
695       }
696     }
697   }
698 
699   private void setupMockColumnFamiliesForBlockSize(HTable table,
700       Map<String, Integer> familyToDataBlockEncoding) throws IOException {
701     HTableDescriptor mockTableDescriptor = new HTableDescriptor(TABLE_NAME);
702     for (Entry<String, Integer> entry : familyToDataBlockEncoding.entrySet()) {
703       mockTableDescriptor.addFamily(new HColumnDescriptor(entry.getKey())
704           .setMaxVersions(1)
705           .setBlocksize(entry.getValue())
706           .setBlockCacheEnabled(false)
707           .setTimeToLive(0));
708     }
709     Mockito.doReturn(mockTableDescriptor).when(table).getTableDescriptor();
710   }
711 
712   /**
713    * @return a map from column family names to compression algorithms for
714    *         testing column family compression. Column family names have special characters
715    */
716   private Map<String, Integer>
717   getMockColumnFamiliesForBlockSize (int numCfs) {
718     Map<String, Integer> familyToBlockSize =
719         new HashMap<String, Integer>();
720     // use column family names having special characters
721     if (numCfs-- > 0) {
722       familyToBlockSize.put("Family1!@#!@#&", 1234);
723     }
724     if (numCfs-- > 0) {
725       familyToBlockSize.put("Family2=asdads&!AASD",
726           Integer.MAX_VALUE);
727     }
728     if (numCfs-- > 0) {
729       familyToBlockSize.put("Family2=asdads&!AASD",
730           Integer.MAX_VALUE);
731     }
732     if (numCfs-- > 0) {
733       familyToBlockSize.put("Family3", 0);
734     }
735     return familyToBlockSize;
736   }
737 
738     /**
739    * Test for {@link HFileOutputFormat2#configureDataBlockEncoding(HTable,
740    * Configuration)} and {@link HFileOutputFormat2#createFamilyDataBlockEncodingMap
741    * (Configuration)}.
742    * Tests that the compression map is correctly serialized into
743    * and deserialized from configuration
744    *
745    * @throws IOException
746    */
747   @Test
748   public void testSerializeDeserializeFamilyDataBlockEncodingMap() throws IOException {
749     for (int numCfs = 0; numCfs <= 3; numCfs++) {
750       Configuration conf = new Configuration(this.util.getConfiguration());
751       Map<String, DataBlockEncoding> familyToDataBlockEncoding =
752           getMockColumnFamiliesForDataBlockEncoding(numCfs);
753       HTable table = Mockito.mock(HTable.class);
754       setupMockColumnFamiliesForDataBlockEncoding(table,
755           familyToDataBlockEncoding);
756       HFileOutputFormat2.configureDataBlockEncoding(table, conf);
757 
758       // read back family specific data block encoding settings from the
759       // configuration
760       Map<byte[], DataBlockEncoding> retrievedFamilyToDataBlockEncodingMap =
761           HFileOutputFormat2
762           .createFamilyDataBlockEncodingMap(conf);
763 
764       // test that we have a value for all column families that matches with the
765       // used mock values
766       for (Entry<String, DataBlockEncoding> entry : familyToDataBlockEncoding.entrySet()) {
767         assertEquals("DataBlockEncoding configuration incorrect for column family:"
768             + entry.getKey(), entry.getValue(),
769             retrievedFamilyToDataBlockEncodingMap.get(entry.getKey().getBytes()));
770       }
771     }
772   }
773 
774   private void setupMockColumnFamiliesForDataBlockEncoding(HTable table,
775       Map<String, DataBlockEncoding> familyToDataBlockEncoding) throws IOException {
776     HTableDescriptor mockTableDescriptor = new HTableDescriptor(TABLE_NAME);
777     for (Entry<String, DataBlockEncoding> entry : familyToDataBlockEncoding.entrySet()) {
778       mockTableDescriptor.addFamily(new HColumnDescriptor(entry.getKey())
779           .setMaxVersions(1)
780           .setDataBlockEncoding(entry.getValue())
781           .setBlockCacheEnabled(false)
782           .setTimeToLive(0));
783     }
784     Mockito.doReturn(mockTableDescriptor).when(table).getTableDescriptor();
785   }
786 
787   /**
788    * @return a map from column family names to compression algorithms for
789    *         testing column family compression. Column family names have special characters
790    */
791   private Map<String, DataBlockEncoding>
792       getMockColumnFamiliesForDataBlockEncoding (int numCfs) {
793     Map<String, DataBlockEncoding> familyToDataBlockEncoding =
794         new HashMap<String, DataBlockEncoding>();
795     // use column family names having special characters
796     if (numCfs-- > 0) {
797       familyToDataBlockEncoding.put("Family1!@#!@#&", DataBlockEncoding.DIFF);
798     }
799     if (numCfs-- > 0) {
800       familyToDataBlockEncoding.put("Family2=asdads&!AASD",
801           DataBlockEncoding.FAST_DIFF);
802     }
803     if (numCfs-- > 0) {
804       familyToDataBlockEncoding.put("Family2=asdads&!AASD",
805           DataBlockEncoding.PREFIX);
806     }
807     if (numCfs-- > 0) {
808       familyToDataBlockEncoding.put("Family3", DataBlockEncoding.NONE);
809     }
810     return familyToDataBlockEncoding;
811   }
812 
813   private void setupMockStartKeys(HTable table) throws IOException {
814     byte[][] mockKeys = new byte[][] {
815         HConstants.EMPTY_BYTE_ARRAY,
816         Bytes.toBytes("aaa"),
817         Bytes.toBytes("ggg"),
818         Bytes.toBytes("zzz")
819     };
820     Mockito.doReturn(mockKeys).when(table).getStartKeys();
821   }
822 
823   private void setupMockTableName(HTable table) throws IOException {
824     TableName mockTableName = TableName.valueOf("mock_table");
825     Mockito.doReturn(mockTableName).when(table).getName();
826   }
827 
828   /**
829    * Test that {@link HFileOutputFormat2} RecordWriter uses compression and
830    * bloom filter settings from the column family descriptor
831    */
832   @Test
833   public void testColumnFamilySettings() throws Exception {
834     Configuration conf = new Configuration(this.util.getConfiguration());
835     RecordWriter<ImmutableBytesWritable, Cell> writer = null;
836     TaskAttemptContext context = null;
837     Path dir = util.getDataTestDir("testColumnFamilySettings");
838 
839     // Setup table descriptor
840     HTable table = Mockito.mock(HTable.class);
841     HTableDescriptor htd = new HTableDescriptor(TABLE_NAME);
842     Mockito.doReturn(htd).when(table).getTableDescriptor();
843     for (HColumnDescriptor hcd: HBaseTestingUtility.generateColumnDescriptors()) {
844       htd.addFamily(hcd);
845     }
846 
847     // set up the table to return some mock keys
848     setupMockStartKeys(table);
849 
850     try {
851       // partial map red setup to get an operational writer for testing
852       // We turn off the sequence file compression, because DefaultCodec
853       // pollutes the GZip codec pool with an incompatible compressor.
854       conf.set("io.seqfile.compression.type", "NONE");
855       conf.set("hbase.fs.tmp.dir", dir.toString());
856       // turn locality off to eliminate getRegionLocation fail-and-retry time when writing kvs
857       conf.setBoolean(HFileOutputFormat2.LOCALITY_SENSITIVE_CONF_KEY, false);
858 
859       Job job = new Job(conf, "testLocalMRIncrementalLoad");
860       job.setWorkingDirectory(util.getDataTestDirOnTestFS("testColumnFamilySettings"));
861       setupRandomGeneratorMapper(job);
862       HFileOutputFormat2.configureIncrementalLoad(job, table);
863       FileOutputFormat.setOutputPath(job, dir);
864       context = createTestTaskAttemptContext(job);
865       HFileOutputFormat2 hof = new HFileOutputFormat2();
866       writer = hof.getRecordWriter(context);
867 
868       // write out random rows
869       writeRandomKeyValues(writer, context, htd.getFamiliesKeys(), ROWSPERSPLIT);
870       writer.close(context);
871 
872       // Make sure that a directory was created for every CF
873       FileSystem fs = dir.getFileSystem(conf);
874 
875       // commit so that the filesystem has one directory per column family
876       hof.getOutputCommitter(context).commitTask(context);
877       hof.getOutputCommitter(context).commitJob(context);
878       FileStatus[] families = FSUtils.listStatus(fs, dir, new FSUtils.FamilyDirFilter(fs));
879       assertEquals(htd.getFamilies().size(), families.length);
880       for (FileStatus f : families) {
881         String familyStr = f.getPath().getName();
882         HColumnDescriptor hcd = htd.getFamily(Bytes.toBytes(familyStr));
883         // verify that the compression on this file matches the configured
884         // compression
885         Path dataFilePath = fs.listStatus(f.getPath())[0].getPath();
886         Reader reader = HFile.createReader(fs, dataFilePath, new CacheConfig(conf), conf);
887         Map<byte[], byte[]> fileInfo = reader.loadFileInfo();
888 
889         byte[] bloomFilter = fileInfo.get(StoreFile.BLOOM_FILTER_TYPE_KEY);
890         if (bloomFilter == null) bloomFilter = Bytes.toBytes("NONE");
891         assertEquals("Incorrect bloom filter used for column family " + familyStr +
892           "(reader: " + reader + ")",
893           hcd.getBloomFilterType(), BloomType.valueOf(Bytes.toString(bloomFilter)));
894         assertEquals("Incorrect compression used for column family " + familyStr +
895           "(reader: " + reader + ")", hcd.getCompression(), reader.getFileContext().getCompression());
896       }
897     } finally {
898       dir.getFileSystem(conf).delete(dir, true);
899     }
900   }
901 
902   /**
903    * Write random values to the writer assuming a table created using
904    * {@link #FAMILIES} as column family descriptors
905    */
906   private void writeRandomKeyValues(RecordWriter<ImmutableBytesWritable, Cell> writer,
907       TaskAttemptContext context, Set<byte[]> families, int numRows)
908       throws IOException, InterruptedException {
909     byte keyBytes[] = new byte[Bytes.SIZEOF_INT];
910     int valLength = 10;
911     byte valBytes[] = new byte[valLength];
912 
913     int taskId = context.getTaskAttemptID().getTaskID().getId();
914     assert taskId < Byte.MAX_VALUE : "Unit tests dont support > 127 tasks!";
915 
916     Random random = new Random();
917     for (int i = 0; i < numRows; i++) {
918 
919       Bytes.putInt(keyBytes, 0, i);
920       random.nextBytes(valBytes);
921       ImmutableBytesWritable key = new ImmutableBytesWritable(keyBytes);
922 
923       for (byte[] family : families) {
924         Cell kv = new KeyValue(keyBytes, family,
925             PerformanceEvaluation.QUALIFIER_NAME, valBytes);
926         writer.write(key, kv);
927       }
928     }
929   }
930 
931   /**
932    * This test is to test the scenario happened in HBASE-6901.
933    * All files are bulk loaded and excluded from minor compaction.
934    * Without the fix of HBASE-6901, an ArrayIndexOutOfBoundsException
935    * will be thrown.
936    */
937   @Ignore("Flakey: See HBASE-9051")
938   @Test
939   public void testExcludeAllFromMinorCompaction() throws Exception {
940     Configuration conf = util.getConfiguration();
941     conf.setInt("hbase.hstore.compaction.min", 2);
942     generateRandomStartKeys(5);
943 
944     try {
945       util.startMiniCluster();
946       final FileSystem fs = util.getDFSCluster().getFileSystem();
947       HBaseAdmin admin = new HBaseAdmin(conf);
948       HTable table = util.createTable(TABLE_NAME, FAMILIES);
949       assertEquals("Should start with empty table", 0, util.countRows(table));
950 
951       // deep inspection: get the StoreFile dir
952       final Path storePath = new Path(
953         FSUtils.getTableDir(FSUtils.getRootDir(conf), TABLE_NAME),
954           new Path(admin.getTableRegions(TABLE_NAME).get(0).getEncodedName(),
955             Bytes.toString(FAMILIES[0])));
956       assertEquals(0, fs.listStatus(storePath).length);
957 
958       // Generate two bulk load files
959       conf.setBoolean("hbase.mapreduce.hfileoutputformat.compaction.exclude",
960           true);
961       util.startMiniMapReduceCluster();
962 
963       for (int i = 0; i < 2; i++) {
964         Path testDir = util.getDataTestDirOnTestFS("testExcludeAllFromMinorCompaction_" + i);
965         runIncrementalPELoad(conf, table, testDir);
966         // Perform the actual load
967         new LoadIncrementalHFiles(conf).doBulkLoad(testDir, table);
968       }
969 
970       // Ensure data shows up
971       int expectedRows = 2 * NMapInputFormat.getNumMapTasks(conf) * ROWSPERSPLIT;
972       assertEquals("LoadIncrementalHFiles should put expected data in table",
973           expectedRows, util.countRows(table));
974 
975       // should have a second StoreFile now
976       assertEquals(2, fs.listStatus(storePath).length);
977 
978       // minor compactions shouldn't get rid of the file
979       admin.compact(TABLE_NAME.getName());
980       try {
981         quickPoll(new Callable<Boolean>() {
982           public Boolean call() throws Exception {
983             return fs.listStatus(storePath).length == 1;
984           }
985         }, 5000);
986         throw new IOException("SF# = " + fs.listStatus(storePath).length);
987       } catch (AssertionError ae) {
988         // this is expected behavior
989       }
990 
991       // a major compaction should work though
992       admin.majorCompact(TABLE_NAME.getName());
993       quickPoll(new Callable<Boolean>() {
994         public Boolean call() throws Exception {
995           return fs.listStatus(storePath).length == 1;
996         }
997       }, 5000);
998 
999     } finally {
1000       util.shutdownMiniMapReduceCluster();
1001       util.shutdownMiniCluster();
1002     }
1003   }
1004 
1005   @Test
1006   public void testExcludeMinorCompaction() throws Exception {
1007     Configuration conf = util.getConfiguration();
1008     conf.setInt("hbase.hstore.compaction.min", 2);
1009     generateRandomStartKeys(5);
1010 
1011     try {
1012       util.startMiniCluster();
1013       Path testDir = util.getDataTestDirOnTestFS("testExcludeMinorCompaction");
1014       final FileSystem fs = util.getDFSCluster().getFileSystem();
1015       HBaseAdmin admin = new HBaseAdmin(conf);
1016       HTable table = util.createTable(TABLE_NAME, FAMILIES);
1017       assertEquals("Should start with empty table", 0, util.countRows(table));
1018 
1019       // deep inspection: get the StoreFile dir
1020       final Path storePath = new Path(
1021         FSUtils.getTableDir(FSUtils.getRootDir(conf), TABLE_NAME),
1022           new Path(admin.getTableRegions(TABLE_NAME).get(0).getEncodedName(),
1023             Bytes.toString(FAMILIES[0])));
1024       assertEquals(0, fs.listStatus(storePath).length);
1025 
1026       // put some data in it and flush to create a storefile
1027       Put p = new Put(Bytes.toBytes("test"));
1028       p.add(FAMILIES[0], Bytes.toBytes("1"), Bytes.toBytes("1"));
1029       table.put(p);
1030       admin.flush(TABLE_NAME.getName());
1031       assertEquals(1, util.countRows(table));
1032       quickPoll(new Callable<Boolean>() {
1033         public Boolean call() throws Exception {
1034           return fs.listStatus(storePath).length == 1;
1035         }
1036       }, 5000);
1037 
1038       // Generate a bulk load file with more rows
1039       conf.setBoolean("hbase.mapreduce.hfileoutputformat.compaction.exclude",
1040           true);
1041       util.startMiniMapReduceCluster();
1042       runIncrementalPELoad(conf, table, testDir);
1043 
1044       // Perform the actual load
1045       new LoadIncrementalHFiles(conf).doBulkLoad(testDir, table);
1046 
1047       // Ensure data shows up
1048       int expectedRows = NMapInputFormat.getNumMapTasks(conf) * ROWSPERSPLIT;
1049       assertEquals("LoadIncrementalHFiles should put expected data in table",
1050           expectedRows + 1, util.countRows(table));
1051 
1052       // should have a second StoreFile now
1053       assertEquals(2, fs.listStatus(storePath).length);
1054 
1055       // minor compactions shouldn't get rid of the file
1056       admin.compact(TABLE_NAME.getName());
1057       try {
1058         quickPoll(new Callable<Boolean>() {
1059           public Boolean call() throws Exception {
1060             return fs.listStatus(storePath).length == 1;
1061           }
1062         }, 5000);
1063         throw new IOException("SF# = " + fs.listStatus(storePath).length);
1064       } catch (AssertionError ae) {
1065         // this is expected behavior
1066       }
1067 
1068       // a major compaction should work though
1069       admin.majorCompact(TABLE_NAME.getName());
1070       quickPoll(new Callable<Boolean>() {
1071         public Boolean call() throws Exception {
1072           return fs.listStatus(storePath).length == 1;
1073         }
1074       }, 5000);
1075 
1076     } finally {
1077       util.shutdownMiniMapReduceCluster();
1078       util.shutdownMiniCluster();
1079     }
1080   }
1081 
1082   private void quickPoll(Callable<Boolean> c, int waitMs) throws Exception {
1083     int sleepMs = 10;
1084     int retries = (int) Math.ceil(((double) waitMs) / sleepMs);
1085     while (retries-- > 0) {
1086       if (c.call().booleanValue()) {
1087         return;
1088       }
1089       Thread.sleep(sleepMs);
1090     }
1091     fail();
1092   }
1093 
1094   public static void main(String args[]) throws Exception {
1095     new TestHFileOutputFormat2().manualTest(args);
1096   }
1097 
1098   public void manualTest(String args[]) throws Exception {
1099     Configuration conf = HBaseConfiguration.create();
1100     util = new HBaseTestingUtility(conf);
1101     if ("newtable".equals(args[0])) {
1102       byte[] tname = args[1].getBytes();
1103       HTable table = util.createTable(tname, FAMILIES);
1104       HBaseAdmin admin = new HBaseAdmin(conf);
1105       admin.disableTable(tname);
1106       byte[][] startKeys = generateRandomStartKeys(5);
1107       util.createMultiRegions(conf, table, FAMILIES[0], startKeys);
1108       admin.enableTable(tname);
1109     } else if ("incremental".equals(args[0])) {
1110       byte[] tname = args[1].getBytes();
1111       HTable table = new HTable(conf, tname);
1112       Path outDir = new Path("incremental-out");
1113       runIncrementalPELoad(conf, table, outDir);
1114     } else {
1115       throw new RuntimeException(
1116           "usage: TestHFileOutputFormat2 newtable | incremental");
1117     }
1118   }
1119 
1120 }
1121