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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.io.UnsupportedEncodingException;
30  import java.util.Arrays;
31  import java.util.HashMap;
32  import java.util.Iterator;
33  import java.util.List;
34  import java.util.Map;
35  import java.util.Map.Entry;
36  import java.util.Random;
37  import java.util.Set;
38  import java.util.concurrent.Callable;
39  
40  import org.apache.commons.logging.Log;
41  import org.apache.commons.logging.LogFactory;
42  import org.apache.hadoop.conf.Configuration;
43  import org.apache.hadoop.fs.FileStatus;
44  import org.apache.hadoop.fs.FileSystem;
45  import org.apache.hadoop.fs.LocatedFileStatus;
46  import org.apache.hadoop.fs.Path;
47  import org.apache.hadoop.fs.RemoteIterator;
48  import org.apache.hadoop.hbase.CategoryBasedTimeout;
49  import org.apache.hadoop.hbase.Cell;
50  import org.apache.hadoop.hbase.CellUtil;
51  import org.apache.hadoop.hbase.CompatibilitySingletonFactory;
52  import org.apache.hadoop.hbase.HBaseConfiguration;
53  import org.apache.hadoop.hbase.HBaseTestingUtility;
54  import org.apache.hadoop.hbase.HColumnDescriptor;
55  import org.apache.hadoop.hbase.HConstants;
56  import org.apache.hadoop.hbase.HTableDescriptor;
57  import org.apache.hadoop.hbase.HadoopShims;
58  import org.apache.hadoop.hbase.KeyValue;
59  import org.apache.hadoop.hbase.testclassification.LargeTests;
60  import org.apache.hadoop.hbase.PerformanceEvaluation;
61  import org.apache.hadoop.hbase.TableName;
62  import org.apache.hadoop.hbase.Tag;
63  import org.apache.hadoop.hbase.TagType;
64  import org.apache.hadoop.hbase.client.Admin;
65  import org.apache.hadoop.hbase.client.Connection;
66  import org.apache.hadoop.hbase.client.ConnectionFactory;
67  import org.apache.hadoop.hbase.client.HBaseAdmin;
68  import org.apache.hadoop.hbase.client.HTable;
69  import org.apache.hadoop.hbase.client.Put;
70  import org.apache.hadoop.hbase.client.RegionLocator;
71  import org.apache.hadoop.hbase.client.Result;
72  import org.apache.hadoop.hbase.client.ResultScanner;
73  import org.apache.hadoop.hbase.client.Scan;
74  import org.apache.hadoop.hbase.client.Table;
75  import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
76  import org.apache.hadoop.hbase.io.compress.Compression;
77  import org.apache.hadoop.hbase.io.compress.Compression.Algorithm;
78  import org.apache.hadoop.hbase.io.encoding.DataBlockEncoding;
79  import org.apache.hadoop.hbase.io.hfile.CacheConfig;
80  import org.apache.hadoop.hbase.io.hfile.HFile;
81  import org.apache.hadoop.hbase.io.hfile.HFile.Reader;
82  import org.apache.hadoop.hbase.io.hfile.HFileScanner;
83  import org.apache.hadoop.hbase.regionserver.BloomType;
84  import org.apache.hadoop.hbase.regionserver.StoreFile;
85  import org.apache.hadoop.hbase.regionserver.TimeRangeTracker;
86  import org.apache.hadoop.hbase.util.Bytes;
87  import org.apache.hadoop.hbase.util.FSUtils;
88  import org.apache.hadoop.hbase.util.Threads;
89  import org.apache.hadoop.hbase.util.Writables;
90  import org.apache.hadoop.io.NullWritable;
91  import org.apache.hadoop.mapreduce.Job;
92  import org.apache.hadoop.mapreduce.Mapper;
93  import org.apache.hadoop.mapreduce.RecordWriter;
94  import org.apache.hadoop.mapreduce.TaskAttemptContext;
95  import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
96  import org.junit.Ignore;
97  import org.junit.Rule;
98  import org.junit.Test;
99  import org.junit.experimental.categories.Category;
100 import org.junit.rules.TestRule;
101 import org.mockito.Mockito;
102 
103 /**
104  * Simple test for {@link CellSortReducer} and {@link HFileOutputFormat2}.
105  * Sets up and runs a mapreduce job that writes hfile output.
106  * Creates a few inner classes to implement splits and an inputformat that
107  * emits keys and values like those of {@link PerformanceEvaluation}.
108  */
109 @Category(LargeTests.class)
110 public class TestHFileOutputFormat2  {
111   @Rule public final TestRule timeout = CategoryBasedTimeout.builder().
112       withTimeout(this.getClass()).withLookingForStuckThread(true).build();
113   private final static int ROWSPERSPLIT = 1024;
114 
115   private static final byte[][] FAMILIES
116     = { Bytes.add(PerformanceEvaluation.FAMILY_NAME, Bytes.toBytes("-A"))
117       , Bytes.add(PerformanceEvaluation.FAMILY_NAME, Bytes.toBytes("-B"))};
118   private static final TableName TABLE_NAME =
119       TableName.valueOf("TestTable");
120 
121   private HBaseTestingUtility util = new HBaseTestingUtility();
122 
123   private static final Log LOG = LogFactory.getLog(TestHFileOutputFormat2.class);
124 
125   /**
126    * Simple mapper that makes KeyValue output.
127    */
128   static class RandomKVGeneratingMapper
129       extends Mapper<NullWritable, NullWritable,
130                  ImmutableBytesWritable, Cell> {
131 
132     private int keyLength;
133     private static final int KEYLEN_DEFAULT=10;
134     private static final String KEYLEN_CONF="randomkv.key.length";
135 
136     private int valLength;
137     private static final int VALLEN_DEFAULT=10;
138     private static final String VALLEN_CONF="randomkv.val.length";
139     private static final byte [] QUALIFIER = Bytes.toBytes("data");
140 
141     @Override
142     protected void setup(Context context) throws IOException,
143         InterruptedException {
144       super.setup(context);
145 
146       Configuration conf = context.getConfiguration();
147       keyLength = conf.getInt(KEYLEN_CONF, KEYLEN_DEFAULT);
148       valLength = conf.getInt(VALLEN_CONF, VALLEN_DEFAULT);
149     }
150 
151     @Override
152     protected void map(
153         NullWritable n1, NullWritable n2,
154         Mapper<NullWritable, NullWritable,
155                ImmutableBytesWritable,Cell>.Context context)
156         throws java.io.IOException ,InterruptedException
157     {
158 
159       byte keyBytes[] = new byte[keyLength];
160       byte valBytes[] = new byte[valLength];
161 
162       int taskId = context.getTaskAttemptID().getTaskID().getId();
163       assert taskId < Byte.MAX_VALUE : "Unit tests dont support > 127 tasks!";
164 
165       Random random = new Random();
166       for (int i = 0; i < ROWSPERSPLIT; i++) {
167 
168         random.nextBytes(keyBytes);
169         // Ensure that unique tasks generate unique keys
170         keyBytes[keyLength - 1] = (byte)(taskId & 0xFF);
171         random.nextBytes(valBytes);
172         ImmutableBytesWritable key = new ImmutableBytesWritable(keyBytes);
173 
174         for (byte[] family : TestHFileOutputFormat2.FAMILIES) {
175           Cell kv = new KeyValue(keyBytes, family, QUALIFIER, valBytes);
176           context.write(key, kv);
177         }
178       }
179     }
180   }
181 
182   private void setupRandomGeneratorMapper(Job job) {
183     job.setInputFormatClass(NMapInputFormat.class);
184     job.setMapperClass(RandomKVGeneratingMapper.class);
185     job.setMapOutputKeyClass(ImmutableBytesWritable.class);
186     job.setMapOutputValueClass(KeyValue.class);
187   }
188 
189   /**
190    * Test that {@link HFileOutputFormat2} RecordWriter amends timestamps if
191    * passed a keyvalue whose timestamp is {@link HConstants#LATEST_TIMESTAMP}.
192    * @see <a href="https://issues.apache.org/jira/browse/HBASE-2615">HBASE-2615</a>
193    */
194   @Ignore("Goes zombie too frequently; needs work. See HBASE-14563") @Test
195   public void test_LATEST_TIMESTAMP_isReplaced()
196   throws Exception {
197     Configuration conf = new Configuration(this.util.getConfiguration());
198     RecordWriter<ImmutableBytesWritable, Cell> writer = null;
199     TaskAttemptContext context = null;
200     Path dir =
201       util.getDataTestDir("test_LATEST_TIMESTAMP_isReplaced");
202     try {
203       Job job = new Job(conf);
204       FileOutputFormat.setOutputPath(job, dir);
205       context = createTestTaskAttemptContext(job);
206       HFileOutputFormat2 hof = new HFileOutputFormat2();
207       writer = hof.getRecordWriter(context);
208       final byte [] b = Bytes.toBytes("b");
209 
210       // Test 1.  Pass a KV that has a ts of LATEST_TIMESTAMP.  It should be
211       // changed by call to write.  Check all in kv is same but ts.
212       KeyValue kv = new KeyValue(b, b, b);
213       KeyValue original = kv.clone();
214       writer.write(new ImmutableBytesWritable(), kv);
215       assertFalse(original.equals(kv));
216       assertTrue(Bytes.equals(CellUtil.cloneRow(original), CellUtil.cloneRow(kv)));
217       assertTrue(Bytes.equals(CellUtil.cloneFamily(original), CellUtil.cloneFamily(kv)));
218       assertTrue(Bytes.equals(CellUtil.cloneQualifier(original), CellUtil.cloneQualifier(kv)));
219       assertNotSame(original.getTimestamp(), kv.getTimestamp());
220       assertNotSame(HConstants.LATEST_TIMESTAMP, kv.getTimestamp());
221 
222       // Test 2. Now test passing a kv that has explicit ts.  It should not be
223       // changed by call to record write.
224       kv = new KeyValue(b, b, b, kv.getTimestamp() - 1, b);
225       original = kv.clone();
226       writer.write(new ImmutableBytesWritable(), kv);
227       assertTrue(original.equals(kv));
228     } finally {
229       if (writer != null && context != null) writer.close(context);
230       dir.getFileSystem(conf).delete(dir, true);
231     }
232   }
233 
234   private TaskAttemptContext createTestTaskAttemptContext(final Job job)
235   throws Exception {
236     HadoopShims hadoop = CompatibilitySingletonFactory.getInstance(HadoopShims.class);
237     TaskAttemptContext context = hadoop.createTestTaskAttemptContext(
238       job, "attempt_201402131733_0001_m_000000_0");
239     return context;
240   }
241 
242   /*
243    * Test that {@link HFileOutputFormat2} creates an HFile with TIMERANGE
244    * metadata used by time-restricted scans.
245    */
246   @Ignore("Goes zombie too frequently; needs work. See HBASE-14563") @Test
247   public void test_TIMERANGE() throws Exception {
248     Configuration conf = new Configuration(this.util.getConfiguration());
249     RecordWriter<ImmutableBytesWritable, Cell> writer = null;
250     TaskAttemptContext context = null;
251     Path dir =
252       util.getDataTestDir("test_TIMERANGE_present");
253     LOG.info("Timerange dir writing to dir: " + dir);
254     try {
255       // build a record writer using HFileOutputFormat2
256       Job job = new Job(conf);
257       FileOutputFormat.setOutputPath(job, dir);
258       context = createTestTaskAttemptContext(job);
259       HFileOutputFormat2 hof = new HFileOutputFormat2();
260       writer = hof.getRecordWriter(context);
261 
262       // Pass two key values with explicit times stamps
263       final byte [] b = Bytes.toBytes("b");
264 
265       // value 1 with timestamp 2000
266       KeyValue kv = new KeyValue(b, b, b, 2000, b);
267       KeyValue original = kv.clone();
268       writer.write(new ImmutableBytesWritable(), kv);
269       assertEquals(original,kv);
270 
271       // value 2 with timestamp 1000
272       kv = new KeyValue(b, b, b, 1000, b);
273       original = kv.clone();
274       writer.write(new ImmutableBytesWritable(), kv);
275       assertEquals(original, kv);
276 
277       // verify that the file has the proper FileInfo.
278       writer.close(context);
279 
280       // the generated file lives 1 directory down from the attempt directory
281       // and is the only file, e.g.
282       // _attempt__0000_r_000000_0/b/1979617994050536795
283       FileSystem fs = FileSystem.get(conf);
284       Path attemptDirectory = hof.getDefaultWorkFile(context, "").getParent();
285       FileStatus[] sub1 = fs.listStatus(attemptDirectory);
286       FileStatus[] file = fs.listStatus(sub1[0].getPath());
287 
288       // open as HFile Reader and pull out TIMERANGE FileInfo.
289       HFile.Reader rd = HFile.createReader(fs, file[0].getPath(),
290           new CacheConfig(conf), conf);
291       Map<byte[],byte[]> finfo = rd.loadFileInfo();
292       byte[] range = finfo.get("TIMERANGE".getBytes());
293       assertNotNull(range);
294 
295       // unmarshall and check values.
296       TimeRangeTracker timeRangeTracker = new TimeRangeTracker();
297       Writables.copyWritable(range, timeRangeTracker);
298       LOG.info(timeRangeTracker.getMinimumTimestamp() +
299           "...." + timeRangeTracker.getMaximumTimestamp());
300       assertEquals(1000, timeRangeTracker.getMinimumTimestamp());
301       assertEquals(2000, timeRangeTracker.getMaximumTimestamp());
302       rd.close();
303     } finally {
304       if (writer != null && context != null) writer.close(context);
305       dir.getFileSystem(conf).delete(dir, true);
306     }
307   }
308 
309   /**
310    * Run small MR job.
311    */
312   @Ignore("Goes zombie too frequently; needs work. See HBASE-14563") @Test
313   public void testWritingPEData() throws Exception {
314     Configuration conf = util.getConfiguration();
315     Path testDir = util.getDataTestDirOnTestFS("testWritingPEData");
316     FileSystem fs = testDir.getFileSystem(conf);
317 
318     // Set down this value or we OOME in eclipse.
319     conf.setInt("mapreduce.task.io.sort.mb", 20);
320     // Write a few files.
321     conf.setLong(HConstants.HREGION_MAX_FILESIZE, 64 * 1024);
322 
323     Job job = new Job(conf, "testWritingPEData");
324     setupRandomGeneratorMapper(job);
325     // This partitioner doesn't work well for number keys but using it anyways
326     // just to demonstrate how to configure it.
327     byte[] startKey = new byte[RandomKVGeneratingMapper.KEYLEN_DEFAULT];
328     byte[] endKey = new byte[RandomKVGeneratingMapper.KEYLEN_DEFAULT];
329 
330     Arrays.fill(startKey, (byte)0);
331     Arrays.fill(endKey, (byte)0xff);
332 
333     job.setPartitionerClass(SimpleTotalOrderPartitioner.class);
334     // Set start and end rows for partitioner.
335     SimpleTotalOrderPartitioner.setStartKey(job.getConfiguration(), startKey);
336     SimpleTotalOrderPartitioner.setEndKey(job.getConfiguration(), endKey);
337     job.setReducerClass(KeyValueSortReducer.class);
338     job.setOutputFormatClass(HFileOutputFormat2.class);
339     job.setNumReduceTasks(4);
340     job.getConfiguration().setStrings("io.serializations", conf.get("io.serializations"),
341         MutationSerialization.class.getName(), ResultSerialization.class.getName(),
342         KeyValueSerialization.class.getName());
343 
344     FileOutputFormat.setOutputPath(job, testDir);
345     assertTrue(job.waitForCompletion(false));
346     FileStatus [] files = fs.listStatus(testDir);
347     assertTrue(files.length > 0);
348   }
349 
350   /**
351    * Test that {@link HFileOutputFormat2} RecordWriter writes tags such as ttl into
352    * hfile.
353    */
354   @Test
355   public void test_WritingTagData()
356       throws Exception {
357     Configuration conf = new Configuration(this.util.getConfiguration());
358     final String HFILE_FORMAT_VERSION_CONF_KEY = "hfile.format.version";
359     conf.setInt(HFILE_FORMAT_VERSION_CONF_KEY, HFile.MIN_FORMAT_VERSION_WITH_TAGS);
360     RecordWriter<ImmutableBytesWritable, Cell> writer = null;
361     TaskAttemptContext context = null;
362     Path dir =
363         util.getDataTestDir("WritingTagData");
364     try {
365       Job job = new Job(conf);
366       FileOutputFormat.setOutputPath(job, dir);
367       context = createTestTaskAttemptContext(job);
368       HFileOutputFormat2 hof = new HFileOutputFormat2();
369       writer = hof.getRecordWriter(context);
370       final byte [] b = Bytes.toBytes("b");
371 
372       KeyValue kv = new KeyValue(b, b, b, HConstants.LATEST_TIMESTAMP, b, new Tag[] {
373           new Tag(TagType.TTL_TAG_TYPE, Bytes.toBytes(978670)) });
374       writer.write(new ImmutableBytesWritable(), kv);
375       writer.close(context);
376       writer = null;
377       FileSystem fs = dir.getFileSystem(conf);
378       RemoteIterator<LocatedFileStatus> iterator = fs.listFiles(dir, true);
379       while(iterator.hasNext()) {
380         LocatedFileStatus keyFileStatus = iterator.next();
381         HFile.Reader reader = HFile.createReader(fs, keyFileStatus.getPath(), new CacheConfig(conf),
382             conf);
383         HFileScanner scanner = reader.getScanner(false, false, false);
384         scanner.seekTo();
385         Cell cell = scanner.getKeyValue();
386 
387         Iterator<Tag> tagsIterator = CellUtil.tagsIterator(cell.getTagsArray(),
388             cell.getTagsOffset(), cell.getTagsLength());
389         assertTrue(tagsIterator.hasNext());
390         assertTrue(tagsIterator.next().getType() == TagType.TTL_TAG_TYPE);
391       }
392     } finally {
393       if (writer != null && context != null) writer.close(context);
394       dir.getFileSystem(conf).delete(dir, true);
395     }
396   }
397 
398   @Ignore("Goes zombie too frequently; needs work. See HBASE-14563") @Test
399   public void testJobConfiguration() throws Exception {
400     Configuration conf = new Configuration(this.util.getConfiguration());
401     conf.set(HConstants.TEMPORARY_FS_DIRECTORY_KEY, util.getDataTestDir("testJobConfiguration")
402         .toString());
403     Job job = new Job(conf);
404     job.setWorkingDirectory(util.getDataTestDir("testJobConfiguration"));
405     RegionLocator regionLocator = Mockito.mock(RegionLocator.class);
406     setupMockStartKeys(regionLocator);
407     HFileOutputFormat2.configureIncrementalLoad(job, new HTableDescriptor(), regionLocator);
408     assertEquals(job.getNumReduceTasks(), 4);
409   }
410 
411   private byte [][] generateRandomStartKeys(int numKeys) {
412     Random random = new Random();
413     byte[][] ret = new byte[numKeys][];
414     // first region start key is always empty
415     ret[0] = HConstants.EMPTY_BYTE_ARRAY;
416     for (int i = 1; i < numKeys; i++) {
417       ret[i] =
418         PerformanceEvaluation.generateData(random, PerformanceEvaluation.DEFAULT_VALUE_LENGTH);
419     }
420     return ret;
421   }
422 
423   private byte[][] generateRandomSplitKeys(int numKeys) {
424     Random random = new Random();
425     byte[][] ret = new byte[numKeys][];
426     for (int i = 0; i < numKeys; i++) {
427       ret[i] =
428           PerformanceEvaluation.generateData(random, PerformanceEvaluation.DEFAULT_VALUE_LENGTH);
429     }
430     return ret;
431   }
432 
433   @Ignore("Goes zombie too frequently; needs work. See HBASE-14563") @Test
434   public void testMRIncrementalLoad() throws Exception {
435     LOG.info("\nStarting test testMRIncrementalLoad\n");
436     doIncrementalLoadTest(false);
437   }
438 
439   @Ignore("Goes zombie too frequently; needs work. See HBASE-14563") @Test
440   public void testMRIncrementalLoadWithSplit() throws Exception {
441     LOG.info("\nStarting test testMRIncrementalLoadWithSplit\n");
442     doIncrementalLoadTest(true);
443   }
444 
445   /**
446    * Test for HFileOutputFormat2.LOCALITY_SENSITIVE_CONF_KEY = true
447    * This test could only check the correctness of original logic if LOCALITY_SENSITIVE_CONF_KEY
448    * is set to true. Because MiniHBaseCluster always run with single hostname (and different ports),
449    * it's not possible to check the region locality by comparing region locations and DN hostnames.
450    * When MiniHBaseCluster supports explicit hostnames parameter (just like MiniDFSCluster does),
451    * we could test region locality features more easily.
452    */
453   @Ignore("Goes zombie too frequently; needs work. See HBASE-14563") @Test
454   public void testMRIncrementalLoadWithLocality() throws Exception {
455     LOG.info("\nStarting test testMRIncrementalLoadWithLocality\n");
456     doIncrementalLoadTest(false);
457     doIncrementalLoadTest(true);
458   }
459 
460   private void doIncrementalLoadTest(
461       boolean shouldChangeRegions) throws Exception {
462     util = new HBaseTestingUtility();
463     Configuration conf = util.getConfiguration();
464     byte[][] splitKeys = generateRandomSplitKeys(4);
465     util.setJobWithoutMRCluster();
466     util.startMiniCluster();
467     try {
468       HTable table = util.createTable(TABLE_NAME, FAMILIES, splitKeys);
469       Admin admin = table.getConnection().getAdmin();
470       Path testDir = util.getDataTestDirOnTestFS("testLocalMRIncrementalLoad");
471       assertEquals("Should start with empty table",
472           0, util.countRows(table));
473       int numRegions = -1;
474       try (RegionLocator r = table.getRegionLocator()) {
475         numRegions = r.getStartKeys().length;
476       }
477       assertEquals("Should make 5 regions", numRegions, 5);
478       // Generate the bulk load files
479       runIncrementalPELoad(conf, table.getTableDescriptor(), table.getRegionLocator(), testDir);
480       // This doesn't write into the table, just makes files
481       assertEquals("HFOF should not touch actual table",
482           0, util.countRows(table));
483 
484 
485       // Make sure that a directory was created for every CF
486       int dir = 0;
487       for (FileStatus f : testDir.getFileSystem(conf).listStatus(testDir)) {
488         for (byte[] family : FAMILIES) {
489           if (Bytes.toString(family).equals(f.getPath().getName())) {
490             ++dir;
491           }
492         }
493       }
494       assertEquals("Column family not found in FS.", FAMILIES.length, dir);
495 
496       // handle the split case
497       if (shouldChangeRegions) {
498         LOG.info("Changing regions in table");
499         admin.disableTable(table.getName());
500         while(util.getMiniHBaseCluster().getMaster().getAssignmentManager().
501             getRegionStates().isRegionsInTransition()) {
502           Threads.sleep(200);
503           LOG.info("Waiting on table to finish disabling");
504         }
505         util.deleteTable(table.getName());
506         byte[][] newSplitKeys = generateRandomSplitKeys(14);
507         table = util.createTable(TABLE_NAME, FAMILIES, newSplitKeys);
508 
509         while (table.getRegionLocator().getAllRegionLocations().size() != 15 ||
510             !admin.isTableAvailable(table.getName())) {
511           Thread.sleep(200);
512           LOG.info("Waiting for new region assignment to happen");
513         }
514       }
515 
516       // Perform the actual load
517       new LoadIncrementalHFiles(conf).doBulkLoad(testDir, table);
518 
519       // Ensure data shows up
520       int expectedRows = NMapInputFormat.getNumMapTasks(conf) * ROWSPERSPLIT;
521       assertEquals("LoadIncrementalHFiles should put expected data in table",
522           expectedRows, util.countRows(table));
523       Scan scan = new Scan();
524       ResultScanner results = table.getScanner(scan);
525       for (Result res : results) {
526         assertEquals(FAMILIES.length, res.rawCells().length);
527         Cell first = res.rawCells()[0];
528         for (Cell kv : res.rawCells()) {
529           assertTrue(CellUtil.matchingRow(first, kv));
530           assertTrue(Bytes.equals(CellUtil.cloneValue(first), CellUtil.cloneValue(kv)));
531         }
532       }
533       results.close();
534       String tableDigestBefore = util.checksumRows(table);
535 
536       // Cause regions to reopen
537       admin.disableTable(TABLE_NAME);
538       while (!admin.isTableDisabled(TABLE_NAME)) {
539         Thread.sleep(200);
540         LOG.info("Waiting for table to disable");
541       }
542       admin.enableTable(TABLE_NAME);
543       util.waitTableAvailable(TABLE_NAME);
544       assertEquals("Data should remain after reopening of regions",
545           tableDigestBefore, util.checksumRows(table));
546     } finally {
547       util.shutdownMiniCluster();
548     }
549   }
550 
551   private void runIncrementalPELoad(Configuration conf, HTableDescriptor tableDescriptor,
552       RegionLocator regionLocator, Path outDir) throws IOException, UnsupportedEncodingException,
553       InterruptedException, ClassNotFoundException {
554     Job job = new Job(conf, "testLocalMRIncrementalLoad");
555     job.setWorkingDirectory(util.getDataTestDirOnTestFS("runIncrementalPELoad"));
556     job.getConfiguration().setStrings("io.serializations", conf.get("io.serializations"),
557         MutationSerialization.class.getName(), ResultSerialization.class.getName(),
558         KeyValueSerialization.class.getName());
559     setupRandomGeneratorMapper(job);
560     HFileOutputFormat2.configureIncrementalLoad(job, tableDescriptor, regionLocator);
561     FileOutputFormat.setOutputPath(job, outDir);
562 
563     assertFalse(util.getTestFileSystem().exists(outDir)) ;
564 
565     assertEquals(regionLocator.getAllRegionLocations().size(), job.getNumReduceTasks());
566 
567     assertTrue(job.waitForCompletion(true));
568   }
569 
570   /**
571    * Test for {@link HFileOutputFormat2#configureCompression(org.apache.hadoop.hbase.client.Table,
572    * Configuration)} and {@link HFileOutputFormat2#createFamilyCompressionMap
573    * (Configuration)}.
574    * Tests that the compression map is correctly serialized into
575    * and deserialized from configuration
576    *
577    * @throws IOException
578    */
579   @Ignore("Goes zombie too frequently; needs work. See HBASE-14563") @Test
580   public void testSerializeDeserializeFamilyCompressionMap() throws IOException {
581     for (int numCfs = 0; numCfs <= 3; numCfs++) {
582       Configuration conf = new Configuration(this.util.getConfiguration());
583       Map<String, Compression.Algorithm> familyToCompression =
584           getMockColumnFamiliesForCompression(numCfs);
585       Table table = Mockito.mock(HTable.class);
586       setupMockColumnFamiliesForCompression(table, familyToCompression);
587       HFileOutputFormat2.configureCompression(conf, table.getTableDescriptor());
588 
589       // read back family specific compression setting from the configuration
590       Map<byte[], Algorithm> retrievedFamilyToCompressionMap = HFileOutputFormat2
591           .createFamilyCompressionMap(conf);
592 
593       // test that we have a value for all column families that matches with the
594       // used mock values
595       for (Entry<String, Algorithm> entry : familyToCompression.entrySet()) {
596         assertEquals("Compression configuration incorrect for column family:"
597             + entry.getKey(), entry.getValue(),
598             retrievedFamilyToCompressionMap.get(entry.getKey().getBytes()));
599       }
600     }
601   }
602 
603   private void setupMockColumnFamiliesForCompression(Table table,
604       Map<String, Compression.Algorithm> familyToCompression) throws IOException {
605     HTableDescriptor mockTableDescriptor = new HTableDescriptor(TABLE_NAME);
606     for (Entry<String, Compression.Algorithm> entry : familyToCompression.entrySet()) {
607       mockTableDescriptor.addFamily(new HColumnDescriptor(entry.getKey())
608           .setMaxVersions(1)
609           .setCompressionType(entry.getValue())
610           .setBlockCacheEnabled(false)
611           .setTimeToLive(0));
612     }
613     Mockito.doReturn(mockTableDescriptor).when(table).getTableDescriptor();
614   }
615 
616   /**
617    * @return a map from column family names to compression algorithms for
618    *         testing column family compression. Column family names have special characters
619    */
620   private Map<String, Compression.Algorithm>
621       getMockColumnFamiliesForCompression (int numCfs) {
622     Map<String, Compression.Algorithm> familyToCompression
623       = new HashMap<String, Compression.Algorithm>();
624     // use column family names having special characters
625     if (numCfs-- > 0) {
626       familyToCompression.put("Family1!@#!@#&", Compression.Algorithm.LZO);
627     }
628     if (numCfs-- > 0) {
629       familyToCompression.put("Family2=asdads&!AASD", Compression.Algorithm.SNAPPY);
630     }
631     if (numCfs-- > 0) {
632       familyToCompression.put("Family2=asdads&!AASD", Compression.Algorithm.GZ);
633     }
634     if (numCfs-- > 0) {
635       familyToCompression.put("Family3", Compression.Algorithm.NONE);
636     }
637     return familyToCompression;
638   }
639 
640 
641   /**
642    * Test for {@link HFileOutputFormat2#configureBloomType(org.apache.hadoop.hbase.client.Table,
643    * Configuration)} and {@link HFileOutputFormat2#createFamilyBloomTypeMap
644    * (Configuration)}.
645    * Tests that the compression map is correctly serialized into
646    * and deserialized from configuration
647    *
648    * @throws IOException
649    */
650   @Ignore("Goes zombie too frequently; needs work. See HBASE-14563") @Test
651   public void testSerializeDeserializeFamilyBloomTypeMap() throws IOException {
652     for (int numCfs = 0; numCfs <= 2; numCfs++) {
653       Configuration conf = new Configuration(this.util.getConfiguration());
654       Map<String, BloomType> familyToBloomType =
655           getMockColumnFamiliesForBloomType(numCfs);
656       Table table = Mockito.mock(HTable.class);
657       setupMockColumnFamiliesForBloomType(table,
658           familyToBloomType);
659       HFileOutputFormat2.configureBloomType(table.getTableDescriptor(), conf);
660 
661       // read back family specific data block encoding settings from the
662       // configuration
663       Map<byte[], BloomType> retrievedFamilyToBloomTypeMap =
664           HFileOutputFormat2
665               .createFamilyBloomTypeMap(conf);
666 
667       // test that we have a value for all column families that matches with the
668       // used mock values
669       for (Entry<String, BloomType> entry : familyToBloomType.entrySet()) {
670         assertEquals("BloomType configuration incorrect for column family:"
671             + entry.getKey(), entry.getValue(),
672             retrievedFamilyToBloomTypeMap.get(entry.getKey().getBytes()));
673       }
674     }
675   }
676 
677   private void setupMockColumnFamiliesForBloomType(Table table,
678       Map<String, BloomType> familyToDataBlockEncoding) throws IOException {
679     HTableDescriptor mockTableDescriptor = new HTableDescriptor(TABLE_NAME);
680     for (Entry<String, BloomType> entry : familyToDataBlockEncoding.entrySet()) {
681       mockTableDescriptor.addFamily(new HColumnDescriptor(entry.getKey())
682           .setMaxVersions(1)
683           .setBloomFilterType(entry.getValue())
684           .setBlockCacheEnabled(false)
685           .setTimeToLive(0));
686     }
687     Mockito.doReturn(mockTableDescriptor).when(table).getTableDescriptor();
688   }
689 
690   /**
691    * @return a map from column family names to compression algorithms for
692    *         testing column family compression. Column family names have special characters
693    */
694   private Map<String, BloomType>
695   getMockColumnFamiliesForBloomType (int numCfs) {
696     Map<String, BloomType> familyToBloomType =
697         new HashMap<String, BloomType>();
698     // use column family names having special characters
699     if (numCfs-- > 0) {
700       familyToBloomType.put("Family1!@#!@#&", BloomType.ROW);
701     }
702     if (numCfs-- > 0) {
703       familyToBloomType.put("Family2=asdads&!AASD",
704           BloomType.ROWCOL);
705     }
706     if (numCfs-- > 0) {
707       familyToBloomType.put("Family3", BloomType.NONE);
708     }
709     return familyToBloomType;
710   }
711 
712   /**
713    * Test for {@link HFileOutputFormat2#configureBlockSize(org.apache.hadoop.hbase.client.Table,
714    * Configuration)} and {@link HFileOutputFormat2#createFamilyBlockSizeMap
715    * (Configuration)}.
716    * Tests that the compression map is correctly serialized into
717    * and deserialized from configuration
718    *
719    * @throws IOException
720    */
721   @Ignore("Goes zombie too frequently; needs work. See HBASE-14563") @Test
722   public void testSerializeDeserializeFamilyBlockSizeMap() throws IOException {
723     for (int numCfs = 0; numCfs <= 3; numCfs++) {
724       Configuration conf = new Configuration(this.util.getConfiguration());
725       Map<String, Integer> familyToBlockSize =
726           getMockColumnFamiliesForBlockSize(numCfs);
727       Table table = Mockito.mock(HTable.class);
728       setupMockColumnFamiliesForBlockSize(table,
729           familyToBlockSize);
730       HFileOutputFormat2.configureBlockSize(table.getTableDescriptor(), conf);
731 
732       // read back family specific data block encoding settings from the
733       // configuration
734       Map<byte[], Integer> retrievedFamilyToBlockSizeMap =
735           HFileOutputFormat2
736               .createFamilyBlockSizeMap(conf);
737 
738       // test that we have a value for all column families that matches with the
739       // used mock values
740       for (Entry<String, Integer> entry : familyToBlockSize.entrySet()
741           ) {
742         assertEquals("BlockSize configuration incorrect for column family:"
743             + entry.getKey(), entry.getValue(),
744             retrievedFamilyToBlockSizeMap.get(entry.getKey().getBytes()));
745       }
746     }
747   }
748 
749   private void setupMockColumnFamiliesForBlockSize(Table table,
750       Map<String, Integer> familyToDataBlockEncoding) throws IOException {
751     HTableDescriptor mockTableDescriptor = new HTableDescriptor(TABLE_NAME);
752     for (Entry<String, Integer> entry : familyToDataBlockEncoding.entrySet()) {
753       mockTableDescriptor.addFamily(new HColumnDescriptor(entry.getKey())
754           .setMaxVersions(1)
755           .setBlocksize(entry.getValue())
756           .setBlockCacheEnabled(false)
757           .setTimeToLive(0));
758     }
759     Mockito.doReturn(mockTableDescriptor).when(table).getTableDescriptor();
760   }
761 
762   /**
763    * @return a map from column family names to compression algorithms for
764    *         testing column family compression. Column family names have special characters
765    */
766   private Map<String, Integer>
767   getMockColumnFamiliesForBlockSize (int numCfs) {
768     Map<String, Integer> familyToBlockSize =
769         new HashMap<String, Integer>();
770     // use column family names having special characters
771     if (numCfs-- > 0) {
772       familyToBlockSize.put("Family1!@#!@#&", 1234);
773     }
774     if (numCfs-- > 0) {
775       familyToBlockSize.put("Family2=asdads&!AASD",
776           Integer.MAX_VALUE);
777     }
778     if (numCfs-- > 0) {
779       familyToBlockSize.put("Family2=asdads&!AASD",
780           Integer.MAX_VALUE);
781     }
782     if (numCfs-- > 0) {
783       familyToBlockSize.put("Family3", 0);
784     }
785     return familyToBlockSize;
786   }
787 
788   /**
789    * Test for {@link HFileOutputFormat2#configureDataBlockEncoding(HTableDescriptor, Configuration)}
790    * and {@link HFileOutputFormat2#createFamilyDataBlockEncodingMap(Configuration)}.
791    * Tests that the compression map is correctly serialized into
792    * and deserialized from configuration
793    *
794    * @throws IOException
795    */
796   @Ignore("Goes zombie too frequently; needs work. See HBASE-14563") @Test
797   public void testSerializeDeserializeFamilyDataBlockEncodingMap() throws IOException {
798     for (int numCfs = 0; numCfs <= 3; numCfs++) {
799       Configuration conf = new Configuration(this.util.getConfiguration());
800       Map<String, DataBlockEncoding> familyToDataBlockEncoding =
801           getMockColumnFamiliesForDataBlockEncoding(numCfs);
802       Table table = Mockito.mock(HTable.class);
803       setupMockColumnFamiliesForDataBlockEncoding(table,
804           familyToDataBlockEncoding);
805       HTableDescriptor tableDescriptor = table.getTableDescriptor();
806       HFileOutputFormat2.configureDataBlockEncoding(tableDescriptor, conf);
807 
808       // read back family specific data block encoding settings from the
809       // configuration
810       Map<byte[], DataBlockEncoding> retrievedFamilyToDataBlockEncodingMap =
811           HFileOutputFormat2
812           .createFamilyDataBlockEncodingMap(conf);
813 
814       // test that we have a value for all column families that matches with the
815       // used mock values
816       for (Entry<String, DataBlockEncoding> entry : familyToDataBlockEncoding.entrySet()) {
817         assertEquals("DataBlockEncoding configuration incorrect for column family:"
818             + entry.getKey(), entry.getValue(),
819             retrievedFamilyToDataBlockEncodingMap.get(entry.getKey().getBytes()));
820       }
821     }
822   }
823 
824   private void setupMockColumnFamiliesForDataBlockEncoding(Table table,
825       Map<String, DataBlockEncoding> familyToDataBlockEncoding) throws IOException {
826     HTableDescriptor mockTableDescriptor = new HTableDescriptor(TABLE_NAME);
827     for (Entry<String, DataBlockEncoding> entry : familyToDataBlockEncoding.entrySet()) {
828       mockTableDescriptor.addFamily(new HColumnDescriptor(entry.getKey())
829           .setMaxVersions(1)
830           .setDataBlockEncoding(entry.getValue())
831           .setBlockCacheEnabled(false)
832           .setTimeToLive(0));
833     }
834     Mockito.doReturn(mockTableDescriptor).when(table).getTableDescriptor();
835   }
836 
837   /**
838    * @return a map from column family names to compression algorithms for
839    *         testing column family compression. Column family names have special characters
840    */
841   private Map<String, DataBlockEncoding>
842       getMockColumnFamiliesForDataBlockEncoding (int numCfs) {
843     Map<String, DataBlockEncoding> familyToDataBlockEncoding =
844         new HashMap<String, DataBlockEncoding>();
845     // use column family names having special characters
846     if (numCfs-- > 0) {
847       familyToDataBlockEncoding.put("Family1!@#!@#&", DataBlockEncoding.DIFF);
848     }
849     if (numCfs-- > 0) {
850       familyToDataBlockEncoding.put("Family2=asdads&!AASD",
851           DataBlockEncoding.FAST_DIFF);
852     }
853     if (numCfs-- > 0) {
854       familyToDataBlockEncoding.put("Family2=asdads&!AASD",
855           DataBlockEncoding.PREFIX);
856     }
857     if (numCfs-- > 0) {
858       familyToDataBlockEncoding.put("Family3", DataBlockEncoding.NONE);
859     }
860     return familyToDataBlockEncoding;
861   }
862 
863   private void setupMockStartKeys(RegionLocator table) throws IOException {
864     byte[][] mockKeys = new byte[][] {
865         HConstants.EMPTY_BYTE_ARRAY,
866         Bytes.toBytes("aaa"),
867         Bytes.toBytes("ggg"),
868         Bytes.toBytes("zzz")
869     };
870     Mockito.doReturn(mockKeys).when(table).getStartKeys();
871   }
872 
873   /**
874    * Test that {@link HFileOutputFormat2} RecordWriter uses compression and
875    * bloom filter settings from the column family descriptor
876    */
877   @Ignore("Goes zombie too frequently; needs work. See HBASE-14563") @Test
878   public void testColumnFamilySettings() throws Exception {
879     Configuration conf = new Configuration(this.util.getConfiguration());
880     RecordWriter<ImmutableBytesWritable, Cell> writer = null;
881     TaskAttemptContext context = null;
882     Path dir = util.getDataTestDir("testColumnFamilySettings");
883 
884     // Setup table descriptor
885     Table table = Mockito.mock(Table.class);
886     RegionLocator regionLocator = Mockito.mock(RegionLocator.class);
887     HTableDescriptor htd = new HTableDescriptor(TABLE_NAME);
888     Mockito.doReturn(htd).when(table).getTableDescriptor();
889     for (HColumnDescriptor hcd: HBaseTestingUtility.generateColumnDescriptors()) {
890       htd.addFamily(hcd);
891     }
892 
893     // set up the table to return some mock keys
894     setupMockStartKeys(regionLocator);
895 
896     try {
897       // partial map red setup to get an operational writer for testing
898       // We turn off the sequence file compression, because DefaultCodec
899       // pollutes the GZip codec pool with an incompatible compressor.
900       conf.set("io.seqfile.compression.type", "NONE");
901       conf.set("hbase.fs.tmp.dir", dir.toString());
902       Job job = new Job(conf, "testLocalMRIncrementalLoad");
903       job.setWorkingDirectory(util.getDataTestDirOnTestFS("testColumnFamilySettings"));
904       setupRandomGeneratorMapper(job);
905       HFileOutputFormat2.configureIncrementalLoad(job, table.getTableDescriptor(), regionLocator);
906       FileOutputFormat.setOutputPath(job, dir);
907       context = createTestTaskAttemptContext(job);
908       HFileOutputFormat2 hof = new HFileOutputFormat2();
909       writer = hof.getRecordWriter(context);
910 
911       // write out random rows
912       writeRandomKeyValues(writer, context, htd.getFamiliesKeys(), ROWSPERSPLIT);
913       writer.close(context);
914 
915       // Make sure that a directory was created for every CF
916       FileSystem fs = dir.getFileSystem(conf);
917 
918       // commit so that the filesystem has one directory per column family
919       hof.getOutputCommitter(context).commitTask(context);
920       hof.getOutputCommitter(context).commitJob(context);
921       FileStatus[] families = FSUtils.listStatus(fs, dir, new FSUtils.FamilyDirFilter(fs));
922       assertEquals(htd.getFamilies().size(), families.length);
923       for (FileStatus f : families) {
924         String familyStr = f.getPath().getName();
925         HColumnDescriptor hcd = htd.getFamily(Bytes.toBytes(familyStr));
926         // verify that the compression on this file matches the configured
927         // compression
928         Path dataFilePath = fs.listStatus(f.getPath())[0].getPath();
929         Reader reader = HFile.createReader(fs, dataFilePath, new CacheConfig(conf), conf);
930         Map<byte[], byte[]> fileInfo = reader.loadFileInfo();
931 
932         byte[] bloomFilter = fileInfo.get(StoreFile.BLOOM_FILTER_TYPE_KEY);
933         if (bloomFilter == null) bloomFilter = Bytes.toBytes("NONE");
934         assertEquals("Incorrect bloom filter used for column family " + familyStr +
935           "(reader: " + reader + ")",
936           hcd.getBloomFilterType(), BloomType.valueOf(Bytes.toString(bloomFilter)));
937         assertEquals("Incorrect compression used for column family " + familyStr +
938           "(reader: " + reader + ")", hcd.getCompression(), reader.getFileContext().getCompression());
939       }
940     } finally {
941       dir.getFileSystem(conf).delete(dir, true);
942     }
943   }
944 
945   /**
946    * Write random values to the writer assuming a table created using
947    * {@link #FAMILIES} as column family descriptors
948    */
949   private void writeRandomKeyValues(RecordWriter<ImmutableBytesWritable, Cell> writer,
950       TaskAttemptContext context, Set<byte[]> families, int numRows)
951       throws IOException, InterruptedException {
952     byte keyBytes[] = new byte[Bytes.SIZEOF_INT];
953     int valLength = 10;
954     byte valBytes[] = new byte[valLength];
955 
956     int taskId = context.getTaskAttemptID().getTaskID().getId();
957     assert taskId < Byte.MAX_VALUE : "Unit tests dont support > 127 tasks!";
958     final byte [] qualifier = Bytes.toBytes("data");
959     Random random = new Random();
960     for (int i = 0; i < numRows; i++) {
961 
962       Bytes.putInt(keyBytes, 0, i);
963       random.nextBytes(valBytes);
964       ImmutableBytesWritable key = new ImmutableBytesWritable(keyBytes);
965 
966       for (byte[] family : families) {
967         Cell kv = new KeyValue(keyBytes, family, qualifier, valBytes);
968         writer.write(key, kv);
969       }
970     }
971   }
972 
973   /**
974    * This test is to test the scenario happened in HBASE-6901.
975    * All files are bulk loaded and excluded from minor compaction.
976    * Without the fix of HBASE-6901, an ArrayIndexOutOfBoundsException
977    * will be thrown.
978    */
979   @Ignore ("Flakey: See HBASE-9051") @Test
980   public void testExcludeAllFromMinorCompaction() throws Exception {
981     Configuration conf = util.getConfiguration();
982     conf.setInt("hbase.hstore.compaction.min", 2);
983     generateRandomStartKeys(5);
984     util.setJobWithoutMRCluster();
985     util.startMiniCluster();
986     try (Connection conn = ConnectionFactory.createConnection();
987         Admin admin = conn.getAdmin()) {
988       final FileSystem fs = util.getDFSCluster().getFileSystem();
989       HTable table = util.createTable(TABLE_NAME, FAMILIES);
990       assertEquals("Should start with empty table", 0, util.countRows(table));
991 
992       // deep inspection: get the StoreFile dir
993       final Path storePath = new Path(
994         FSUtils.getTableDir(FSUtils.getRootDir(conf), TABLE_NAME),
995           new Path(admin.getTableRegions(TABLE_NAME).get(0).getEncodedName(),
996             Bytes.toString(FAMILIES[0])));
997       assertEquals(0, fs.listStatus(storePath).length);
998 
999       // Generate two bulk load files
1000       conf.setBoolean("hbase.mapreduce.hfileoutputformat.compaction.exclude",
1001           true);
1002 
1003       for (int i = 0; i < 2; i++) {
1004         Path testDir = util.getDataTestDirOnTestFS("testExcludeAllFromMinorCompaction_" + i);
1005         runIncrementalPELoad(conf, table.getTableDescriptor(), conn.getRegionLocator(TABLE_NAME),
1006             testDir);
1007         // Perform the actual load
1008         new LoadIncrementalHFiles(conf).doBulkLoad(testDir, table);
1009       }
1010 
1011       // Ensure data shows up
1012       int expectedRows = 2 * NMapInputFormat.getNumMapTasks(conf) * ROWSPERSPLIT;
1013       assertEquals("LoadIncrementalHFiles should put expected data in table",
1014           expectedRows, util.countRows(table));
1015 
1016       // should have a second StoreFile now
1017       assertEquals(2, fs.listStatus(storePath).length);
1018 
1019       // minor compactions shouldn't get rid of the file
1020       admin.compact(TABLE_NAME);
1021       try {
1022         quickPoll(new Callable<Boolean>() {
1023           @Override
1024           public Boolean call() throws Exception {
1025             return fs.listStatus(storePath).length == 1;
1026           }
1027         }, 5000);
1028         throw new IOException("SF# = " + fs.listStatus(storePath).length);
1029       } catch (AssertionError ae) {
1030         // this is expected behavior
1031       }
1032 
1033       // a major compaction should work though
1034       admin.majorCompact(TABLE_NAME);
1035       quickPoll(new Callable<Boolean>() {
1036         @Override
1037         public Boolean call() throws Exception {
1038           return fs.listStatus(storePath).length == 1;
1039         }
1040       }, 5000);
1041 
1042     } finally {
1043       util.shutdownMiniCluster();
1044     }
1045   }
1046 
1047   @Ignore("Goes zombie too frequently; needs work. See HBASE-14563") @Test
1048   public void testExcludeMinorCompaction() throws Exception {
1049     Configuration conf = util.getConfiguration();
1050     conf.setInt("hbase.hstore.compaction.min", 2);
1051     generateRandomStartKeys(5);
1052     util.setJobWithoutMRCluster();
1053     util.startMiniCluster();
1054     try (Connection conn = ConnectionFactory.createConnection(conf);
1055         Admin admin = conn.getAdmin()){
1056       Path testDir = util.getDataTestDirOnTestFS("testExcludeMinorCompaction");
1057       final FileSystem fs = util.getDFSCluster().getFileSystem();
1058       Table table = util.createTable(TABLE_NAME, FAMILIES);
1059       assertEquals("Should start with empty table", 0, util.countRows(table));
1060 
1061       // deep inspection: get the StoreFile dir
1062       final Path storePath = new Path(
1063         FSUtils.getTableDir(FSUtils.getRootDir(conf), TABLE_NAME),
1064           new Path(admin.getTableRegions(TABLE_NAME).get(0).getEncodedName(),
1065             Bytes.toString(FAMILIES[0])));
1066       assertEquals(0, fs.listStatus(storePath).length);
1067 
1068       // put some data in it and flush to create a storefile
1069       Put p = new Put(Bytes.toBytes("test"));
1070       p.add(FAMILIES[0], Bytes.toBytes("1"), Bytes.toBytes("1"));
1071       table.put(p);
1072       admin.flush(TABLE_NAME);
1073       assertEquals(1, util.countRows(table));
1074       quickPoll(new Callable<Boolean>() {
1075         @Override
1076         public Boolean call() throws Exception {
1077           return fs.listStatus(storePath).length == 1;
1078         }
1079       }, 5000);
1080 
1081       // Generate a bulk load file with more rows
1082       conf.setBoolean("hbase.mapreduce.hfileoutputformat.compaction.exclude",
1083           true);
1084 
1085       RegionLocator regionLocator = conn.getRegionLocator(TABLE_NAME);
1086       runIncrementalPELoad(conf, table.getTableDescriptor(), regionLocator, testDir);
1087 
1088       // Perform the actual load
1089       new LoadIncrementalHFiles(conf).doBulkLoad(testDir, admin, table, regionLocator);
1090 
1091       // Ensure data shows up
1092       int expectedRows = NMapInputFormat.getNumMapTasks(conf) * ROWSPERSPLIT;
1093       assertEquals("LoadIncrementalHFiles should put expected data in table",
1094           expectedRows + 1, util.countRows(table));
1095 
1096       // should have a second StoreFile now
1097       assertEquals(2, fs.listStatus(storePath).length);
1098 
1099       // minor compactions shouldn't get rid of the file
1100       admin.compact(TABLE_NAME);
1101       try {
1102         quickPoll(new Callable<Boolean>() {
1103           @Override
1104           public Boolean call() throws Exception {
1105             return fs.listStatus(storePath).length == 1;
1106           }
1107         }, 5000);
1108         throw new IOException("SF# = " + fs.listStatus(storePath).length);
1109       } catch (AssertionError ae) {
1110         // this is expected behavior
1111       }
1112 
1113       // a major compaction should work though
1114       admin.majorCompact(TABLE_NAME);
1115       quickPoll(new Callable<Boolean>() {
1116         @Override
1117         public Boolean call() throws Exception {
1118           return fs.listStatus(storePath).length == 1;
1119         }
1120       }, 5000);
1121 
1122     } finally {
1123       util.shutdownMiniCluster();
1124     }
1125   }
1126 
1127   private void quickPoll(Callable<Boolean> c, int waitMs) throws Exception {
1128     int sleepMs = 10;
1129     int retries = (int) Math.ceil(((double) waitMs) / sleepMs);
1130     while (retries-- > 0) {
1131       if (c.call().booleanValue()) {
1132         return;
1133       }
1134       Thread.sleep(sleepMs);
1135     }
1136     fail();
1137   }
1138 
1139   public static void main(String args[]) throws Exception {
1140     new TestHFileOutputFormat2().manualTest(args);
1141   }
1142 
1143   public void manualTest(String args[]) throws Exception {
1144     Configuration conf = HBaseConfiguration.create();
1145     util = new HBaseTestingUtility(conf);
1146     if ("newtable".equals(args[0])) {
1147       TableName tname = TableName.valueOf(args[1]);
1148       byte[][] splitKeys = generateRandomSplitKeys(4);
1149       try (HTable table = util.createTable(tname, FAMILIES, splitKeys)) {
1150       }
1151     } else if ("incremental".equals(args[0])) {
1152       TableName tname = TableName.valueOf(args[1]);
1153       try(Connection c = ConnectionFactory.createConnection(conf);
1154           Admin admin = c.getAdmin();
1155           RegionLocator regionLocator = c.getRegionLocator(tname)) {
1156         Path outDir = new Path("incremental-out");
1157         runIncrementalPELoad(conf, admin.getTableDescriptor(tname), regionLocator, outDir);
1158       }
1159     } else {
1160       throw new RuntimeException(
1161           "usage: TestHFileOutputFormat2 newtable | incremental");
1162     }
1163   }
1164 
1165 }
1166