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From: appy@apache.org
To: commits@hbase.apache.org
Date: Sat, 26 Aug 2017 01:39:27 -0000
Message-Id: <cfe858b3d4a2464087376f9a76daef76@git.apache.org>
In-Reply-To: <e77ef25d0b334aadb091739005b58cdb@git.apache.org>
References: <e77ef25d0b334aadb091739005b58cdb@git.apache.org>
Subject: [27/41] hbase git commit: HBASE-18640 Move mapreduce out of
 hbase-server into separate module.
archived-at: Sat, 26 Aug 2017 01:39:10 -0000

http://git-wip-us.apache.org/repos/asf/hbase/blob/664b6be0/hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestHFileOutputFormat2.java
----------------------------------------------------------------------
diff --git a/hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestHFileOutputFormat2.java b/hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestHFileOutputFormat2.java
new file mode 100644
index 0000000..c6a8761
--- /dev/null
+++ b/hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestHFileOutputFormat2.java
@@ -0,0 +1,1496 @@
+/**
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.hadoop.hbase.mapreduce;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNotSame;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
+import java.io.IOException;
+import java.lang.reflect.Field;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Map.Entry;
+import java.util.Random;
+import java.util.Set;
+import java.util.concurrent.Callable;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.fs.FileStatus;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.LocatedFileStatus;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.fs.RemoteIterator;
+import org.apache.hadoop.hbase.ArrayBackedTag;
+import org.apache.hadoop.hbase.CategoryBasedTimeout;
+import org.apache.hadoop.hbase.Cell;
+import org.apache.hadoop.hbase.CellUtil;
+import org.apache.hadoop.hbase.CompatibilitySingletonFactory;
+import org.apache.hadoop.hbase.HBaseConfiguration;
+import org.apache.hadoop.hbase.HBaseTestingUtility;
+import org.apache.hadoop.hbase.HColumnDescriptor;
+import org.apache.hadoop.hbase.HConstants;
+import org.apache.hadoop.hbase.HDFSBlocksDistribution;
+import org.apache.hadoop.hbase.HTableDescriptor;
+import org.apache.hadoop.hbase.HadoopShims;
+import org.apache.hadoop.hbase.KeyValue;
+import org.apache.hadoop.hbase.PerformanceEvaluation;
+import org.apache.hadoop.hbase.TableName;
+import org.apache.hadoop.hbase.Tag;
+import org.apache.hadoop.hbase.TagType;
+import org.apache.hadoop.hbase.TagUtil;
+import org.apache.hadoop.hbase.client.Admin;
+import org.apache.hadoop.hbase.client.Connection;
+import org.apache.hadoop.hbase.client.ConnectionFactory;
+import org.apache.hadoop.hbase.client.Put;
+import org.apache.hadoop.hbase.client.RegionLocator;
+import org.apache.hadoop.hbase.client.Result;
+import org.apache.hadoop.hbase.client.ResultScanner;
+import org.apache.hadoop.hbase.client.Scan;
+import org.apache.hadoop.hbase.client.Table;
+import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
+import org.apache.hadoop.hbase.io.compress.Compression;
+import org.apache.hadoop.hbase.io.compress.Compression.Algorithm;
+import org.apache.hadoop.hbase.io.encoding.DataBlockEncoding;
+import org.apache.hadoop.hbase.io.hfile.CacheConfig;
+import org.apache.hadoop.hbase.io.hfile.HFile;
+import org.apache.hadoop.hbase.io.hfile.HFile.Reader;
+import org.apache.hadoop.hbase.io.hfile.HFileScanner;
+import org.apache.hadoop.hbase.regionserver.BloomType;
+import org.apache.hadoop.hbase.regionserver.HRegion;
+import org.apache.hadoop.hbase.regionserver.Store;
+import org.apache.hadoop.hbase.regionserver.StoreFile;
+import org.apache.hadoop.hbase.regionserver.TestHRegionFileSystem;
+import org.apache.hadoop.hbase.regionserver.TimeRangeTracker;
+import org.apache.hadoop.hbase.testclassification.LargeTests;
+import org.apache.hadoop.hbase.testclassification.VerySlowMapReduceTests;
+import org.apache.hadoop.hbase.util.Bytes;
+import org.apache.hadoop.hbase.util.FSUtils;
+import org.apache.hadoop.hbase.util.ReflectionUtils;
+import org.apache.hadoop.hbase.util.Writables;
+import org.apache.hadoop.hdfs.DistributedFileSystem;
+import org.apache.hadoop.hdfs.protocol.BlockStoragePolicy;
+import org.apache.hadoop.hdfs.protocol.HdfsFileStatus;
+import org.apache.hadoop.hdfs.server.blockmanagement.BlockStoragePolicySuite;
+import org.apache.hadoop.io.NullWritable;
+import org.apache.hadoop.mapreduce.Job;
+import org.apache.hadoop.mapreduce.Mapper;
+import org.apache.hadoop.mapreduce.RecordWriter;
+import org.apache.hadoop.mapreduce.TaskAttemptContext;
+import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
+import org.junit.Ignore;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.experimental.categories.Category;
+import org.junit.rules.TestRule;
+import org.mockito.Mockito;
+
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+/**
+ * Simple test for {@link HFileOutputFormat2}.
+ * Sets up and runs a mapreduce job that writes hfile output.
+ * Creates a few inner classes to implement splits and an inputformat that
+ * emits keys and values like those of {@link PerformanceEvaluation}.
+ */
+@Category({VerySlowMapReduceTests.class, LargeTests.class})
+public class TestHFileOutputFormat2  {
+  @Rule public final TestRule timeout = CategoryBasedTimeout.builder().
+      withTimeout(this.getClass()).withLookingForStuckThread(true).build();
+  private final static int ROWSPERSPLIT = 1024;
+
+  public static final byte[] FAMILY_NAME = TestHRegionFileSystem.FAMILY_NAME;
+  private static final byte[][] FAMILIES = {
+    Bytes.add(FAMILY_NAME, Bytes.toBytes("-A")), Bytes.add(FAMILY_NAME, Bytes.toBytes("-B"))};
+  private static final TableName[] TABLE_NAMES = Stream.of("TestTable", "TestTable2",
+          "TestTable3").map(TableName::valueOf).toArray(TableName[]::new);
+
+  private HBaseTestingUtility util = new HBaseTestingUtility();
+
+  private static final Log LOG = LogFactory.getLog(TestHFileOutputFormat2.class);
+
+  /**
+   * Simple mapper that makes KeyValue output.
+   */
+  static class RandomKVGeneratingMapper
+      extends Mapper<NullWritable, NullWritable,
+                 ImmutableBytesWritable, Cell> {
+
+    private int keyLength;
+    private static final int KEYLEN_DEFAULT=10;
+    private static final String KEYLEN_CONF="randomkv.key.length";
+
+    private int valLength;
+    private static final int VALLEN_DEFAULT=10;
+    private static final String VALLEN_CONF="randomkv.val.length";
+    private static final byte [] QUALIFIER = Bytes.toBytes("data");
+    private boolean multiTableMapper = false;
+    private TableName[] tables = null;
+
+
+    @Override
+    protected void setup(Context context) throws IOException,
+        InterruptedException {
+      super.setup(context);
+
+      Configuration conf = context.getConfiguration();
+      keyLength = conf.getInt(KEYLEN_CONF, KEYLEN_DEFAULT);
+      valLength = conf.getInt(VALLEN_CONF, VALLEN_DEFAULT);
+      multiTableMapper = conf.getBoolean(HFileOutputFormat2.MULTI_TABLE_HFILEOUTPUTFORMAT_CONF_KEY,
+              false);
+      if (multiTableMapper) {
+        tables = TABLE_NAMES;
+      } else {
+        tables = new TableName[]{TABLE_NAMES[0]};
+      }
+    }
+
+    @Override
+    protected void map(
+        NullWritable n1, NullWritable n2,
+        Mapper<NullWritable, NullWritable,
+               ImmutableBytesWritable,Cell>.Context context)
+        throws java.io.IOException ,InterruptedException
+    {
+
+      byte keyBytes[] = new byte[keyLength];
+      byte valBytes[] = new byte[valLength];
+
+      int taskId = context.getTaskAttemptID().getTaskID().getId();
+      assert taskId < Byte.MAX_VALUE : "Unit tests dont support > 127 tasks!";
+      Random random = new Random();
+      byte[] key;
+      for (int j = 0; j < tables.length; ++j) {
+        for (int i = 0; i < ROWSPERSPLIT; i++) {
+          random.nextBytes(keyBytes);
+          // Ensure that unique tasks generate unique keys
+          keyBytes[keyLength - 1] = (byte) (taskId & 0xFF);
+          random.nextBytes(valBytes);
+          key = keyBytes;
+          if (multiTableMapper) {
+            key = MultiTableHFileOutputFormat.createCompositeKey(tables[j].getName(), keyBytes);
+          }
+
+          for (byte[] family : TestHFileOutputFormat2.FAMILIES) {
+            Cell kv = new KeyValue(keyBytes, family, QUALIFIER, valBytes);
+            context.write(new ImmutableBytesWritable(key), kv);
+          }
+        }
+      }
+    }
+  }
+
+  /**
+   * Simple mapper that makes Put output.
+   */
+  static class RandomPutGeneratingMapper
+      extends Mapper<NullWritable, NullWritable,
+                 ImmutableBytesWritable, Put> {
+
+    private int keyLength;
+    private static final int KEYLEN_DEFAULT = 10;
+    private static final String KEYLEN_CONF = "randomkv.key.length";
+
+    private int valLength;
+    private static final int VALLEN_DEFAULT = 10;
+    private static final String VALLEN_CONF = "randomkv.val.length";
+    private static final byte[] QUALIFIER = Bytes.toBytes("data");
+    private boolean multiTableMapper = false;
+    private TableName[] tables = null;
+
+    @Override
+    protected void setup(Context context) throws IOException,
+            InterruptedException {
+      super.setup(context);
+
+      Configuration conf = context.getConfiguration();
+      keyLength = conf.getInt(KEYLEN_CONF, KEYLEN_DEFAULT);
+      valLength = conf.getInt(VALLEN_CONF, VALLEN_DEFAULT);
+      multiTableMapper = conf.getBoolean(HFileOutputFormat2.MULTI_TABLE_HFILEOUTPUTFORMAT_CONF_KEY,
+              false);
+      if (multiTableMapper) {
+        tables = TABLE_NAMES;
+      } else {
+        tables = new TableName[]{TABLE_NAMES[0]};
+      }
+    }
+
+    @Override
+    protected void map(
+            NullWritable n1, NullWritable n2,
+            Mapper<NullWritable, NullWritable,
+                    ImmutableBytesWritable, Put>.Context context)
+            throws java.io.IOException, InterruptedException {
+
+      byte keyBytes[] = new byte[keyLength];
+      byte valBytes[] = new byte[valLength];
+
+      int taskId = context.getTaskAttemptID().getTaskID().getId();
+      assert taskId < Byte.MAX_VALUE : "Unit tests dont support > 127 tasks!";
+
+      Random random = new Random();
+      byte[] key;
+      for (int j = 0; j < tables.length; ++j) {
+        for (int i = 0; i < ROWSPERSPLIT; i++) {
+          random.nextBytes(keyBytes);
+          // Ensure that unique tasks generate unique keys
+          keyBytes[keyLength - 1] = (byte) (taskId & 0xFF);
+          random.nextBytes(valBytes);
+          key = keyBytes;
+          if (multiTableMapper) {
+            key = MultiTableHFileOutputFormat.createCompositeKey(tables[j].getName(), keyBytes);
+          }
+
+          for (byte[] family : TestHFileOutputFormat2.FAMILIES) {
+            Put p = new Put(keyBytes);
+            p.addColumn(family, QUALIFIER, valBytes);
+            // set TTL to very low so that the scan does not return any value
+            p.setTTL(1l);
+            context.write(new ImmutableBytesWritable(key), p);
+          }
+        }
+      }
+    }
+  }
+
+  private void setupRandomGeneratorMapper(Job job, boolean putSortReducer) {
+    if (putSortReducer) {
+      job.setInputFormatClass(NMapInputFormat.class);
+      job.setMapperClass(RandomPutGeneratingMapper.class);
+      job.setMapOutputKeyClass(ImmutableBytesWritable.class);
+      job.setMapOutputValueClass(Put.class);
+    } else {
+      job.setInputFormatClass(NMapInputFormat.class);
+      job.setMapperClass(RandomKVGeneratingMapper.class);
+      job.setMapOutputKeyClass(ImmutableBytesWritable.class);
+      job.setMapOutputValueClass(KeyValue.class);
+    }
+  }
+
+  /**
+   * Test that {@link HFileOutputFormat2} RecordWriter amends timestamps if
+   * passed a keyvalue whose timestamp is {@link HConstants#LATEST_TIMESTAMP}.
+   * @see <a href="https://issues.apache.org/jira/browse/HBASE-2615">HBASE-2615</a>
+   */
+  @Ignore("Goes zombie too frequently; needs work. See HBASE-14563") @Test
+  public void test_LATEST_TIMESTAMP_isReplaced()
+  throws Exception {
+    Configuration conf = new Configuration(this.util.getConfiguration());
+    RecordWriter<ImmutableBytesWritable, Cell> writer = null;
+    TaskAttemptContext context = null;
+    Path dir =
+      util.getDataTestDir("test_LATEST_TIMESTAMP_isReplaced");
+    try {
+      Job job = new Job(conf);
+      FileOutputFormat.setOutputPath(job, dir);
+      context = createTestTaskAttemptContext(job);
+      HFileOutputFormat2 hof = new HFileOutputFormat2();
+      writer = hof.getRecordWriter(context);
+      final byte [] b = Bytes.toBytes("b");
+
+      // Test 1.  Pass a KV that has a ts of LATEST_TIMESTAMP.  It should be
+      // changed by call to write.  Check all in kv is same but ts.
+      KeyValue kv = new KeyValue(b, b, b);
+      KeyValue original = kv.clone();
+      writer.write(new ImmutableBytesWritable(), kv);
+      assertFalse(original.equals(kv));
+      assertTrue(Bytes.equals(CellUtil.cloneRow(original), CellUtil.cloneRow(kv)));
+      assertTrue(Bytes.equals(CellUtil.cloneFamily(original), CellUtil.cloneFamily(kv)));
+      assertTrue(Bytes.equals(CellUtil.cloneQualifier(original), CellUtil.cloneQualifier(kv)));
+      assertNotSame(original.getTimestamp(), kv.getTimestamp());
+      assertNotSame(HConstants.LATEST_TIMESTAMP, kv.getTimestamp());
+
+      // Test 2. Now test passing a kv that has explicit ts.  It should not be
+      // changed by call to record write.
+      kv = new KeyValue(b, b, b, kv.getTimestamp() - 1, b);
+      original = kv.clone();
+      writer.write(new ImmutableBytesWritable(), kv);
+      assertTrue(original.equals(kv));
+    } finally {
+      if (writer != null && context != null) writer.close(context);
+      dir.getFileSystem(conf).delete(dir, true);
+    }
+  }
+
+  private TaskAttemptContext createTestTaskAttemptContext(final Job job)
+  throws Exception {
+    HadoopShims hadoop = CompatibilitySingletonFactory.getInstance(HadoopShims.class);
+    TaskAttemptContext context = hadoop.createTestTaskAttemptContext(
+      job, "attempt_201402131733_0001_m_000000_0");
+    return context;
+  }
+
+  /*
+   * Test that {@link HFileOutputFormat2} creates an HFile with TIMERANGE
+   * metadata used by time-restricted scans.
+   */
+  @Ignore("Goes zombie too frequently; needs work. See HBASE-14563") @Test
+  public void test_TIMERANGE() throws Exception {
+    Configuration conf = new Configuration(this.util.getConfiguration());
+    RecordWriter<ImmutableBytesWritable, Cell> writer = null;
+    TaskAttemptContext context = null;
+    Path dir =
+      util.getDataTestDir("test_TIMERANGE_present");
+    LOG.info("Timerange dir writing to dir: "+ dir);
+    try {
+      // build a record writer using HFileOutputFormat2
+      Job job = new Job(conf);
+      FileOutputFormat.setOutputPath(job, dir);
+      context = createTestTaskAttemptContext(job);
+      HFileOutputFormat2 hof = new HFileOutputFormat2();
+      writer = hof.getRecordWriter(context);
+
+      // Pass two key values with explicit times stamps
+      final byte [] b = Bytes.toBytes("b");
+
+      // value 1 with timestamp 2000
+      KeyValue kv = new KeyValue(b, b, b, 2000, b);
+      KeyValue original = kv.clone();
+      writer.write(new ImmutableBytesWritable(), kv);
+      assertEquals(original,kv);
+
+      // value 2 with timestamp 1000
+      kv = new KeyValue(b, b, b, 1000, b);
+      original = kv.clone();
+      writer.write(new ImmutableBytesWritable(), kv);
+      assertEquals(original, kv);
+
+      // verify that the file has the proper FileInfo.
+      writer.close(context);
+
+      // the generated file lives 1 directory down from the attempt directory
+      // and is the only file, e.g.
+      // _attempt__0000_r_000000_0/b/1979617994050536795
+      FileSystem fs = FileSystem.get(conf);
+      Path attemptDirectory = hof.getDefaultWorkFile(context, "").getParent();
+      FileStatus[] sub1 = fs.listStatus(attemptDirectory);
+      FileStatus[] file = fs.listStatus(sub1[0].getPath());
+
+      // open as HFile Reader and pull out TIMERANGE FileInfo.
+      HFile.Reader rd =
+          HFile.createReader(fs, file[0].getPath(), new CacheConfig(conf), true, conf);
+      Map<byte[],byte[]> finfo = rd.loadFileInfo();
+      byte[] range = finfo.get("TIMERANGE".getBytes("UTF-8"));
+      assertNotNull(range);
+
+      // unmarshall and check values.
+      TimeRangeTracker timeRangeTracker = new TimeRangeTracker();
+      Writables.copyWritable(range, timeRangeTracker);
+      LOG.info(timeRangeTracker.getMin() +
+          "...." + timeRangeTracker.getMax());
+      assertEquals(1000, timeRangeTracker.getMin());
+      assertEquals(2000, timeRangeTracker.getMax());
+      rd.close();
+    } finally {
+      if (writer != null && context != null) writer.close(context);
+      dir.getFileSystem(conf).delete(dir, true);
+    }
+  }
+
+  /**
+   * Run small MR job.
+   */
+  @Ignore("Goes zombie too frequently; needs work. See HBASE-14563") @Test
+  public void testWritingPEData() throws Exception {
+    Configuration conf = util.getConfiguration();
+    Path testDir = util.getDataTestDirOnTestFS("testWritingPEData");
+    FileSystem fs = testDir.getFileSystem(conf);
+
+    // Set down this value or we OOME in eclipse.
+    conf.setInt("mapreduce.task.io.sort.mb", 20);
+    // Write a few files.
+    conf.setLong(HConstants.HREGION_MAX_FILESIZE, 64 * 1024);
+
+    Job job = new Job(conf, "testWritingPEData");
+    setupRandomGeneratorMapper(job, false);
+    // This partitioner doesn't work well for number keys but using it anyways
+    // just to demonstrate how to configure it.
+    byte[] startKey = new byte[RandomKVGeneratingMapper.KEYLEN_DEFAULT];
+    byte[] endKey = new byte[RandomKVGeneratingMapper.KEYLEN_DEFAULT];
+
+    Arrays.fill(startKey, (byte)0);
+    Arrays.fill(endKey, (byte)0xff);
+
+    job.setPartitionerClass(SimpleTotalOrderPartitioner.class);
+    // Set start and end rows for partitioner.
+    SimpleTotalOrderPartitioner.setStartKey(job.getConfiguration(), startKey);
+    SimpleTotalOrderPartitioner.setEndKey(job.getConfiguration(), endKey);
+    job.setReducerClass(KeyValueSortReducer.class);
+    job.setOutputFormatClass(HFileOutputFormat2.class);
+    job.setNumReduceTasks(4);
+    job.getConfiguration().setStrings("io.serializations", conf.get("io.serializations"),
+        MutationSerialization.class.getName(), ResultSerialization.class.getName(),
+        KeyValueSerialization.class.getName());
+
+    FileOutputFormat.setOutputPath(job, testDir);
+    assertTrue(job.waitForCompletion(false));
+    FileStatus [] files = fs.listStatus(testDir);
+    assertTrue(files.length > 0);
+  }
+
+  /**
+   * Test that {@link HFileOutputFormat2} RecordWriter writes tags such as ttl into
+   * hfile.
+   */
+  @Test
+  public void test_WritingTagData()
+      throws Exception {
+    Configuration conf = new Configuration(this.util.getConfiguration());
+    final String HFILE_FORMAT_VERSION_CONF_KEY = "hfile.format.version";
+    conf.setInt(HFILE_FORMAT_VERSION_CONF_KEY, HFile.MIN_FORMAT_VERSION_WITH_TAGS);
+    RecordWriter<ImmutableBytesWritable, Cell> writer = null;
+    TaskAttemptContext context = null;
+    Path dir =
+        util.getDataTestDir("WritingTagData");
+    try {
+      conf.set(HFileOutputFormat2.OUTPUT_TABLE_NAME_CONF_KEY, TABLE_NAMES[0].getNameAsString());
+      // turn locality off to eliminate getRegionLocation fail-and-retry time when writing kvs
+      conf.setBoolean(HFileOutputFormat2.LOCALITY_SENSITIVE_CONF_KEY, false);
+      Job job = new Job(conf);
+      FileOutputFormat.setOutputPath(job, dir);
+      context = createTestTaskAttemptContext(job);
+      HFileOutputFormat2 hof = new HFileOutputFormat2();
+      writer = hof.getRecordWriter(context);
+      final byte [] b = Bytes.toBytes("b");
+
+      List< Tag > tags = new ArrayList<>();
+      tags.add(new ArrayBackedTag(TagType.TTL_TAG_TYPE, Bytes.toBytes(978670)));
+      KeyValue kv = new KeyValue(b, b, b, HConstants.LATEST_TIMESTAMP, b, tags);
+      writer.write(new ImmutableBytesWritable(), kv);
+      writer.close(context);
+      writer = null;
+      FileSystem fs = dir.getFileSystem(conf);
+      RemoteIterator<LocatedFileStatus> iterator = fs.listFiles(dir, true);
+      while(iterator.hasNext()) {
+        LocatedFileStatus keyFileStatus = iterator.next();
+        HFile.Reader reader =
+            HFile.createReader(fs, keyFileStatus.getPath(), new CacheConfig(conf), true, conf);
+        HFileScanner scanner = reader.getScanner(false, false, false);
+        scanner.seekTo();
+        Cell cell = scanner.getCell();
+        List<Tag> tagsFromCell = TagUtil.asList(cell.getTagsArray(), cell.getTagsOffset(),
+            cell.getTagsLength());
+        assertTrue(tagsFromCell.size() > 0);
+        for (Tag tag : tagsFromCell) {
+          assertTrue(tag.getType() == TagType.TTL_TAG_TYPE);
+        }
+      }
+    } finally {
+      if (writer != null && context != null) writer.close(context);
+      dir.getFileSystem(conf).delete(dir, true);
+    }
+  }
+
+  @Ignore("Goes zombie too frequently; needs work. See HBASE-14563") @Test
+  public void testJobConfiguration() throws Exception {
+    Configuration conf = new Configuration(this.util.getConfiguration());
+    conf.set(HConstants.TEMPORARY_FS_DIRECTORY_KEY, util.getDataTestDir("testJobConfiguration")
+        .toString());
+    Job job = new Job(conf);
+    job.setWorkingDirectory(util.getDataTestDir("testJobConfiguration"));
+    Table table = Mockito.mock(Table.class);
+    RegionLocator regionLocator = Mockito.mock(RegionLocator.class);
+    setupMockStartKeys(regionLocator);
+    setupMockTableName(regionLocator);
+    HFileOutputFormat2.configureIncrementalLoad(job, table.getTableDescriptor(), regionLocator);
+    assertEquals(job.getNumReduceTasks(), 4);
+  }
+
+  private byte [][] generateRandomStartKeys(int numKeys) {
+    Random random = new Random();
+    byte[][] ret = new byte[numKeys][];
+    // first region start key is always empty
+    ret[0] = HConstants.EMPTY_BYTE_ARRAY;
+    for (int i = 1; i < numKeys; i++) {
+      ret[i] =
+        PerformanceEvaluation.generateData(random, PerformanceEvaluation.DEFAULT_VALUE_LENGTH);
+    }
+    return ret;
+  }
+
+  private byte[][] generateRandomSplitKeys(int numKeys) {
+    Random random = new Random();
+    byte[][] ret = new byte[numKeys][];
+    for (int i = 0; i < numKeys; i++) {
+      ret[i] =
+          PerformanceEvaluation.generateData(random, PerformanceEvaluation.DEFAULT_VALUE_LENGTH);
+    }
+    return ret;
+  }
+
+  @Ignore("Goes zombie too frequently; needs work. See HBASE-14563") @Test
+  public void testMRIncrementalLoad() throws Exception {
+    LOG.info("\nStarting test testMRIncrementalLoad\n");
+    doIncrementalLoadTest(false, false, false, "testMRIncrementalLoad");
+  }
+
+  @Ignore("Goes zombie too frequently; needs work. See HBASE-14563") @Test
+  public void testMRIncrementalLoadWithSplit() throws Exception {
+    LOG.info("\nStarting test testMRIncrementalLoadWithSplit\n");
+    doIncrementalLoadTest(true, false, false, "testMRIncrementalLoadWithSplit");
+  }
+
+  /**
+   * Test for HFileOutputFormat2.LOCALITY_SENSITIVE_CONF_KEY = true
+   * This test could only check the correctness of original logic if LOCALITY_SENSITIVE_CONF_KEY
+   * is set to true. Because MiniHBaseCluster always run with single hostname (and different ports),
+   * it's not possible to check the region locality by comparing region locations and DN hostnames.
+   * When MiniHBaseCluster supports explicit hostnames parameter (just like MiniDFSCluster does),
+   * we could test region locality features more easily.
+   */
+  @Ignore("Goes zombie too frequently; needs work. See HBASE-14563") @Test
+  public void testMRIncrementalLoadWithLocality() throws Exception {
+    LOG.info("\nStarting test testMRIncrementalLoadWithLocality\n");
+    doIncrementalLoadTest(false, true, false, "testMRIncrementalLoadWithLocality1");
+    doIncrementalLoadTest(true, true, false, "testMRIncrementalLoadWithLocality2");
+  }
+
+  //@Ignore("Wahtevs")
+  @Test
+  public void testMRIncrementalLoadWithPutSortReducer() throws Exception {
+    LOG.info("\nStarting test testMRIncrementalLoadWithPutSortReducer\n");
+    doIncrementalLoadTest(false, false, true, "testMRIncrementalLoadWithPutSortReducer");
+  }
+
+  private void doIncrementalLoadTest(boolean shouldChangeRegions, boolean shouldKeepLocality,
+                                     boolean putSortReducer, String tableStr) throws Exception {
+      doIncrementalLoadTest(shouldChangeRegions, shouldKeepLocality, putSortReducer,
+              Arrays.asList(tableStr));
+  }
+
+  @Test
+  public void testMultiMRIncrementalLoadWithPutSortReducer() throws Exception {
+    LOG.info("\nStarting test testMultiMRIncrementalLoadWithPutSortReducer\n");
+    doIncrementalLoadTest(false, false, true,
+            Arrays.stream(TABLE_NAMES).map(TableName::getNameAsString).collect(Collectors.toList
+                    ()));
+  }
+
+  private void doIncrementalLoadTest(boolean shouldChangeRegions, boolean shouldKeepLocality,
+      boolean putSortReducer, List<String> tableStr) throws Exception {
+    util = new HBaseTestingUtility();
+    Configuration conf = util.getConfiguration();
+    conf.setBoolean(MultiTableHFileOutputFormat.LOCALITY_SENSITIVE_CONF_KEY, shouldKeepLocality);
+    int hostCount = 1;
+    int regionNum = 5;
+    if (shouldKeepLocality) {
+      // We should change host count higher than hdfs replica count when MiniHBaseCluster supports
+      // explicit hostnames parameter just like MiniDFSCluster does.
+      hostCount = 3;
+      regionNum = 20;
+    }
+
+    String[] hostnames = new String[hostCount];
+    for (int i = 0; i < hostCount; ++i) {
+      hostnames[i] = "datanode_" + i;
+    }
+    util.startMiniCluster(1, hostCount, hostnames);
+
+    Map<String, Table> allTables = new HashMap<>(tableStr.size());
+    List<HFileOutputFormat2.TableInfo> tableInfo = new ArrayList<>(tableStr.size());
+    boolean writeMultipleTables = tableStr.size() > 1;
+    for (String tableStrSingle : tableStr) {
+      byte[][] splitKeys = generateRandomSplitKeys(regionNum - 1);
+      TableName tableName = TableName.valueOf(tableStrSingle);
+      Table table = util.createTable(tableName, FAMILIES, splitKeys);
+
+      RegionLocator r = util.getConnection().getRegionLocator(tableName);
+      assertEquals("Should start with empty table", 0, util.countRows(table));
+      int numRegions = r.getStartKeys().length;
+      assertEquals("Should make " + regionNum + " regions", numRegions, regionNum);
+
+      allTables.put(tableStrSingle, table);
+      tableInfo.add(new HFileOutputFormat2.TableInfo(table.getTableDescriptor(), r));
+    }
+    Path testDir = util.getDataTestDirOnTestFS("testLocalMRIncrementalLoad");
+    // Generate the bulk load files
+    runIncrementalPELoad(conf, tableInfo, testDir, putSortReducer);
+
+    for (Table tableSingle : allTables.values()) {
+      // This doesn't write into the table, just makes files
+      assertEquals("HFOF should not touch actual table", 0, util.countRows(tableSingle));
+    }
+    int numTableDirs = 0;
+    for (FileStatus tf : testDir.getFileSystem(conf).listStatus(testDir)) {
+      Path tablePath = testDir;
+
+      if (writeMultipleTables) {
+        if (allTables.containsKey(tf.getPath().getName())) {
+          ++numTableDirs;
+          tablePath = tf.getPath();
+        }
+        else {
+          continue;
+        }
+      }
+
+      // Make sure that a directory was created for every CF
+      int dir = 0;
+      for (FileStatus f : tablePath.getFileSystem(conf).listStatus(tablePath)) {
+        for (byte[] family : FAMILIES) {
+          if (Bytes.toString(family).equals(f.getPath().getName())) {
+            ++dir;
+          }
+        }
+      }
+      assertEquals("Column family not found in FS.", FAMILIES.length, dir);
+    }
+    if (writeMultipleTables) {
+      assertEquals("Dir for all input tables not created", numTableDirs, allTables.size());
+    }
+
+    Admin admin = util.getConnection().getAdmin();
+    try {
+      // handle the split case
+      if (shouldChangeRegions) {
+        Table chosenTable = allTables.values().iterator().next();
+        // Choose a semi-random table if multiple tables are available
+        LOG.info("Changing regions in table " + chosenTable.getName().getNameAsString());
+        admin.disableTable(chosenTable.getName());
+        util.waitUntilNoRegionsInTransition();
+
+        util.deleteTable(chosenTable.getName());
+        byte[][] newSplitKeys = generateRandomSplitKeys(14);
+        Table table = util.createTable(chosenTable.getName(), FAMILIES, newSplitKeys);
+
+        while (util.getConnection().getRegionLocator(chosenTable.getName())
+                .getAllRegionLocations().size() != 15 ||
+                !admin.isTableAvailable(table.getName())) {
+          Thread.sleep(200);
+          LOG.info("Waiting for new region assignment to happen");
+        }
+      }
+
+      // Perform the actual load
+      for (HFileOutputFormat2.TableInfo singleTableInfo : tableInfo) {
+        Path tableDir = testDir;
+        String tableNameStr = singleTableInfo.getHTableDescriptor().getNameAsString();
+        LOG.info("Running LoadIncrementalHFiles on table" + tableNameStr);
+        if (writeMultipleTables) {
+          tableDir = new Path(testDir, tableNameStr);
+        }
+        Table currentTable = allTables.get(tableNameStr);
+        TableName currentTableName = currentTable.getName();
+        new LoadIncrementalHFiles(conf).doBulkLoad(tableDir, admin, currentTable, singleTableInfo
+                .getRegionLocator());
+
+        // Ensure data shows up
+        int expectedRows = 0;
+        if (putSortReducer) {
+          // no rows should be extracted
+          assertEquals("LoadIncrementalHFiles should put expected data in table", expectedRows,
+                  util.countRows(currentTable));
+        } else {
+          expectedRows = NMapInputFormat.getNumMapTasks(conf) * ROWSPERSPLIT;
+          assertEquals("LoadIncrementalHFiles should put expected data in table", expectedRows,
+                  util.countRows(currentTable));
+          Scan scan = new Scan();
+          ResultScanner results = currentTable.getScanner(scan);
+          for (Result res : results) {
+            assertEquals(FAMILIES.length, res.rawCells().length);
+            Cell first = res.rawCells()[0];
+            for (Cell kv : res.rawCells()) {
+              assertTrue(CellUtil.matchingRow(first, kv));
+              assertTrue(Bytes.equals(CellUtil.cloneValue(first), CellUtil.cloneValue(kv)));
+            }
+          }
+          results.close();
+        }
+        String tableDigestBefore = util.checksumRows(currentTable);
+        // Check region locality
+        HDFSBlocksDistribution hbd = new HDFSBlocksDistribution();
+        for (HRegion region : util.getHBaseCluster().getRegions(currentTableName)) {
+          hbd.add(region.getHDFSBlocksDistribution());
+        }
+        for (String hostname : hostnames) {
+          float locality = hbd.getBlockLocalityIndex(hostname);
+          LOG.info("locality of [" + hostname + "]: " + locality);
+          assertEquals(100, (int) (locality * 100));
+        }
+
+        // Cause regions to reopen
+        admin.disableTable(currentTableName);
+        while (!admin.isTableDisabled(currentTableName)) {
+          Thread.sleep(200);
+          LOG.info("Waiting for table to disable");
+        }
+        admin.enableTable(currentTableName);
+        util.waitTableAvailable(currentTableName);
+        assertEquals("Data should remain after reopening of regions",
+                tableDigestBefore, util.checksumRows(currentTable));
+      }
+    } finally {
+      for (HFileOutputFormat2.TableInfo tableInfoSingle : tableInfo) {
+          tableInfoSingle.getRegionLocator().close();
+      }
+      for (Entry<String, Table> singleTable : allTables.entrySet() ) {
+        singleTable.getValue().close();
+        util.deleteTable(singleTable.getValue().getName());
+      }
+      testDir.getFileSystem(conf).delete(testDir, true);
+      util.shutdownMiniCluster();
+    }
+  }
+
+  private void runIncrementalPELoad(Configuration conf, List<HFileOutputFormat2.TableInfo> tableInfo, Path outDir,
+                                    boolean putSortReducer) throws IOException,
+          InterruptedException, ClassNotFoundException {
+    Job job = new Job(conf, "testLocalMRIncrementalLoad");
+    job.setWorkingDirectory(util.getDataTestDirOnTestFS("runIncrementalPELoad"));
+    job.getConfiguration().setStrings("io.serializations", conf.get("io.serializations"),
+        MutationSerialization.class.getName(), ResultSerialization.class.getName(),
+        KeyValueSerialization.class.getName());
+    setupRandomGeneratorMapper(job, putSortReducer);
+    if (tableInfo.size() > 1) {
+      MultiTableHFileOutputFormat.configureIncrementalLoad(job, tableInfo);
+      int sum = 0;
+      for (HFileOutputFormat2.TableInfo tableInfoSingle : tableInfo) {
+        sum += tableInfoSingle.getRegionLocator().getAllRegionLocations().size();
+      }
+      assertEquals(sum, job.getNumReduceTasks());
+    }
+    else {
+      RegionLocator regionLocator = tableInfo.get(0).getRegionLocator();
+      HFileOutputFormat2.configureIncrementalLoad(job, tableInfo.get(0).getHTableDescriptor(),
+              regionLocator);
+      assertEquals(regionLocator.getAllRegionLocations().size(), job.getNumReduceTasks());
+    }
+
+    FileOutputFormat.setOutputPath(job, outDir);
+
+    assertFalse(util.getTestFileSystem().exists(outDir)) ;
+
+    assertTrue(job.waitForCompletion(true));
+  }
+
+  /**
+   * Test for {@link HFileOutputFormat2#configureCompression(Configuration, HTableDescriptor)} and
+   * {@link HFileOutputFormat2#createFamilyCompressionMap(Configuration)}.
+   * Tests that the compression map is correctly serialized into
+   * and deserialized from configuration
+   *
+   * @throws IOException
+   */
+  @Ignore("Goes zombie too frequently; needs work. See HBASE-14563") @Test
+  public void testSerializeDeserializeFamilyCompressionMap() throws IOException {
+    for (int numCfs = 0; numCfs <= 3; numCfs++) {
+      Configuration conf = new Configuration(this.util.getConfiguration());
+      Map<String, Compression.Algorithm> familyToCompression =
+          getMockColumnFamiliesForCompression(numCfs);
+      Table table = Mockito.mock(Table.class);
+      setupMockColumnFamiliesForCompression(table, familyToCompression);
+      conf.set(HFileOutputFormat2.COMPRESSION_FAMILIES_CONF_KEY,
+              HFileOutputFormat2.serializeColumnFamilyAttribute
+                      (HFileOutputFormat2.compressionDetails,
+                              Arrays.asList(table.getTableDescriptor())));
+
+      // read back family specific compression setting from the configuration
+      Map<byte[], Algorithm> retrievedFamilyToCompressionMap = HFileOutputFormat2
+          .createFamilyCompressionMap(conf);
+
+      // test that we have a value for all column families that matches with the
+      // used mock values
+      for (Entry<String, Algorithm> entry : familyToCompression.entrySet()) {
+        assertEquals("Compression configuration incorrect for column family:"
+            + entry.getKey(), entry.getValue(),
+            retrievedFamilyToCompressionMap.get(entry.getKey().getBytes("UTF-8")));
+      }
+    }
+  }
+
+  private void setupMockColumnFamiliesForCompression(Table table,
+      Map<String, Compression.Algorithm> familyToCompression) throws IOException {
+    HTableDescriptor mockTableDescriptor = new HTableDescriptor(TABLE_NAMES[0]);
+    for (Entry<String, Compression.Algorithm> entry : familyToCompression.entrySet()) {
+      mockTableDescriptor.addFamily(new HColumnDescriptor(entry.getKey())
+          .setMaxVersions(1)
+          .setCompressionType(entry.getValue())
+          .setBlockCacheEnabled(false)
+          .setTimeToLive(0));
+    }
+    Mockito.doReturn(mockTableDescriptor).when(table).getTableDescriptor();
+  }
+
+  /**
+   * @return a map from column family names to compression algorithms for
+   *         testing column family compression. Column family names have special characters
+   */
+  private Map<String, Compression.Algorithm>
+      getMockColumnFamiliesForCompression (int numCfs) {
+    Map<String, Compression.Algorithm> familyToCompression = new HashMap<>();
+    // use column family names having special characters
+    if (numCfs-- > 0) {
+      familyToCompression.put("Family1!@#!@#&", Compression.Algorithm.LZO);
+    }
+    if (numCfs-- > 0) {
+      familyToCompression.put("Family2=asdads&!AASD", Compression.Algorithm.SNAPPY);
+    }
+    if (numCfs-- > 0) {
+      familyToCompression.put("Family2=asdads&!AASD", Compression.Algorithm.GZ);
+    }
+    if (numCfs-- > 0) {
+      familyToCompression.put("Family3", Compression.Algorithm.NONE);
+    }
+    return familyToCompression;
+  }
+
+
+  /**
+   * Test for {@link HFileOutputFormat2#configureBloomType(HTableDescriptor, Configuration)} and
+   * {@link HFileOutputFormat2#createFamilyBloomTypeMap(Configuration)}.
+   * Tests that the compression map is correctly serialized into
+   * and deserialized from configuration
+   *
+   * @throws IOException
+   */
+  @Ignore("Goes zombie too frequently; needs work. See HBASE-14563") @Test
+  public void testSerializeDeserializeFamilyBloomTypeMap() throws IOException {
+    for (int numCfs = 0; numCfs <= 2; numCfs++) {
+      Configuration conf = new Configuration(this.util.getConfiguration());
+      Map<String, BloomType> familyToBloomType =
+          getMockColumnFamiliesForBloomType(numCfs);
+      Table table = Mockito.mock(Table.class);
+      setupMockColumnFamiliesForBloomType(table,
+          familyToBloomType);
+      conf.set(HFileOutputFormat2.BLOOM_TYPE_FAMILIES_CONF_KEY,
+              HFileOutputFormat2.serializeColumnFamilyAttribute(HFileOutputFormat2.bloomTypeDetails,
+              Arrays.asList(table.getTableDescriptor())));
+
+      // read back family specific data block encoding settings from the
+      // configuration
+      Map<byte[], BloomType> retrievedFamilyToBloomTypeMap =
+          HFileOutputFormat2
+              .createFamilyBloomTypeMap(conf);
+
+      // test that we have a value for all column families that matches with the
+      // used mock values
+      for (Entry<String, BloomType> entry : familyToBloomType.entrySet()) {
+        assertEquals("BloomType configuration incorrect for column family:"
+            + entry.getKey(), entry.getValue(),
+            retrievedFamilyToBloomTypeMap.get(entry.getKey().getBytes("UTF-8")));
+      }
+    }
+  }
+
+  private void setupMockColumnFamiliesForBloomType(Table table,
+      Map<String, BloomType> familyToDataBlockEncoding) throws IOException {
+    HTableDescriptor mockTableDescriptor = new HTableDescriptor(TABLE_NAMES[0]);
+    for (Entry<String, BloomType> entry : familyToDataBlockEncoding.entrySet()) {
+      mockTableDescriptor.addFamily(new HColumnDescriptor(entry.getKey())
+          .setMaxVersions(1)
+          .setBloomFilterType(entry.getValue())
+          .setBlockCacheEnabled(false)
+          .setTimeToLive(0));
+    }
+    Mockito.doReturn(mockTableDescriptor).when(table).getTableDescriptor();
+  }
+
+  /**
+   * @return a map from column family names to compression algorithms for
+   *         testing column family compression. Column family names have special characters
+   */
+  private Map<String, BloomType>
+  getMockColumnFamiliesForBloomType (int numCfs) {
+    Map<String, BloomType> familyToBloomType = new HashMap<>();
+    // use column family names having special characters
+    if (numCfs-- > 0) {
+      familyToBloomType.put("Family1!@#!@#&", BloomType.ROW);
+    }
+    if (numCfs-- > 0) {
+      familyToBloomType.put("Family2=asdads&!AASD",
+          BloomType.ROWCOL);
+    }
+    if (numCfs-- > 0) {
+      familyToBloomType.put("Family3", BloomType.NONE);
+    }
+    return familyToBloomType;
+  }
+
+  /**
+   * Test for {@link HFileOutputFormat2#configureBlockSize(HTableDescriptor, Configuration)} and
+   * {@link HFileOutputFormat2#createFamilyBlockSizeMap(Configuration)}.
+   * Tests that the compression map is correctly serialized into
+   * and deserialized from configuration
+   *
+   * @throws IOException
+   */
+  @Ignore("Goes zombie too frequently; needs work. See HBASE-14563") @Test
+  public void testSerializeDeserializeFamilyBlockSizeMap() throws IOException {
+    for (int numCfs = 0; numCfs <= 3; numCfs++) {
+      Configuration conf = new Configuration(this.util.getConfiguration());
+      Map<String, Integer> familyToBlockSize =
+          getMockColumnFamiliesForBlockSize(numCfs);
+      Table table = Mockito.mock(Table.class);
+      setupMockColumnFamiliesForBlockSize(table,
+          familyToBlockSize);
+      conf.set(HFileOutputFormat2.BLOCK_SIZE_FAMILIES_CONF_KEY,
+              HFileOutputFormat2.serializeColumnFamilyAttribute
+                      (HFileOutputFormat2.blockSizeDetails, Arrays.asList(table
+                              .getTableDescriptor())));
+
+      // read back family specific data block encoding settings from the
+      // configuration
+      Map<byte[], Integer> retrievedFamilyToBlockSizeMap =
+          HFileOutputFormat2
+              .createFamilyBlockSizeMap(conf);
+
+      // test that we have a value for all column families that matches with the
+      // used mock values
+      for (Entry<String, Integer> entry : familyToBlockSize.entrySet()
+          ) {
+        assertEquals("BlockSize configuration incorrect for column family:"
+            + entry.getKey(), entry.getValue(),
+            retrievedFamilyToBlockSizeMap.get(entry.getKey().getBytes("UTF-8")));
+      }
+    }
+  }
+
+  private void setupMockColumnFamiliesForBlockSize(Table table,
+      Map<String, Integer> familyToDataBlockEncoding) throws IOException {
+    HTableDescriptor mockTableDescriptor = new HTableDescriptor(TABLE_NAMES[0]);
+    for (Entry<String, Integer> entry : familyToDataBlockEncoding.entrySet()) {
+      mockTableDescriptor.addFamily(new HColumnDescriptor(entry.getKey())
+          .setMaxVersions(1)
+          .setBlocksize(entry.getValue())
+          .setBlockCacheEnabled(false)
+          .setTimeToLive(0));
+    }
+    Mockito.doReturn(mockTableDescriptor).when(table).getTableDescriptor();
+  }
+
+  /**
+   * @return a map from column family names to compression algorithms for
+   *         testing column family compression. Column family names have special characters
+   */
+  private Map<String, Integer>
+  getMockColumnFamiliesForBlockSize (int numCfs) {
+    Map<String, Integer> familyToBlockSize = new HashMap<>();
+    // use column family names having special characters
+    if (numCfs-- > 0) {
+      familyToBlockSize.put("Family1!@#!@#&", 1234);
+    }
+    if (numCfs-- > 0) {
+      familyToBlockSize.put("Family2=asdads&!AASD",
+          Integer.MAX_VALUE);
+    }
+    if (numCfs-- > 0) {
+      familyToBlockSize.put("Family2=asdads&!AASD",
+          Integer.MAX_VALUE);
+    }
+    if (numCfs-- > 0) {
+      familyToBlockSize.put("Family3", 0);
+    }
+    return familyToBlockSize;
+  }
+
+  /**
+   * Test for {@link HFileOutputFormat2#configureDataBlockEncoding(HTableDescriptor, Configuration)}
+   * and {@link HFileOutputFormat2#createFamilyDataBlockEncodingMap(Configuration)}.
+   * Tests that the compression map is correctly serialized into
+   * and deserialized from configuration
+   *
+   * @throws IOException
+   */
+  @Ignore("Goes zombie too frequently; needs work. See HBASE-14563") @Test
+  public void testSerializeDeserializeFamilyDataBlockEncodingMap() throws IOException {
+    for (int numCfs = 0; numCfs <= 3; numCfs++) {
+      Configuration conf = new Configuration(this.util.getConfiguration());
+      Map<String, DataBlockEncoding> familyToDataBlockEncoding =
+          getMockColumnFamiliesForDataBlockEncoding(numCfs);
+      Table table = Mockito.mock(Table.class);
+      setupMockColumnFamiliesForDataBlockEncoding(table,
+          familyToDataBlockEncoding);
+      HTableDescriptor tableDescriptor = table.getTableDescriptor();
+      conf.set(HFileOutputFormat2.DATABLOCK_ENCODING_FAMILIES_CONF_KEY,
+              HFileOutputFormat2.serializeColumnFamilyAttribute
+                      (HFileOutputFormat2.dataBlockEncodingDetails, Arrays
+                      .asList(tableDescriptor)));
+
+      // read back family specific data block encoding settings from the
+      // configuration
+      Map<byte[], DataBlockEncoding> retrievedFamilyToDataBlockEncodingMap =
+          HFileOutputFormat2
+          .createFamilyDataBlockEncodingMap(conf);
+
+      // test that we have a value for all column families that matches with the
+      // used mock values
+      for (Entry<String, DataBlockEncoding> entry : familyToDataBlockEncoding.entrySet()) {
+        assertEquals("DataBlockEncoding configuration incorrect for column family:"
+            + entry.getKey(), entry.getValue(),
+            retrievedFamilyToDataBlockEncodingMap.get(entry.getKey().getBytes("UTF-8")));
+      }
+    }
+  }
+
+  private void setupMockColumnFamiliesForDataBlockEncoding(Table table,
+      Map<String, DataBlockEncoding> familyToDataBlockEncoding) throws IOException {
+    HTableDescriptor mockTableDescriptor = new HTableDescriptor(TABLE_NAMES[0]);
+    for (Entry<String, DataBlockEncoding> entry : familyToDataBlockEncoding.entrySet()) {
+      mockTableDescriptor.addFamily(new HColumnDescriptor(entry.getKey())
+          .setMaxVersions(1)
+          .setDataBlockEncoding(entry.getValue())
+          .setBlockCacheEnabled(false)
+          .setTimeToLive(0));
+    }
+    Mockito.doReturn(mockTableDescriptor).when(table).getTableDescriptor();
+  }
+
+  /**
+   * @return a map from column family names to compression algorithms for
+   *         testing column family compression. Column family names have special characters
+   */
+  private Map<String, DataBlockEncoding>
+      getMockColumnFamiliesForDataBlockEncoding (int numCfs) {
+    Map<String, DataBlockEncoding> familyToDataBlockEncoding = new HashMap<>();
+    // use column family names having special characters
+    if (numCfs-- > 0) {
+      familyToDataBlockEncoding.put("Family1!@#!@#&", DataBlockEncoding.DIFF);
+    }
+    if (numCfs-- > 0) {
+      familyToDataBlockEncoding.put("Family2=asdads&!AASD",
+          DataBlockEncoding.FAST_DIFF);
+    }
+    if (numCfs-- > 0) {
+      familyToDataBlockEncoding.put("Family2=asdads&!AASD",
+          DataBlockEncoding.PREFIX);
+    }
+    if (numCfs-- > 0) {
+      familyToDataBlockEncoding.put("Family3", DataBlockEncoding.NONE);
+    }
+    return familyToDataBlockEncoding;
+  }
+
+  private void setupMockStartKeys(RegionLocator table) throws IOException {
+    byte[][] mockKeys = new byte[][] {
+        HConstants.EMPTY_BYTE_ARRAY,
+        Bytes.toBytes("aaa"),
+        Bytes.toBytes("ggg"),
+        Bytes.toBytes("zzz")
+    };
+    Mockito.doReturn(mockKeys).when(table).getStartKeys();
+  }
+
+  private void setupMockTableName(RegionLocator table) throws IOException {
+    TableName mockTableName = TableName.valueOf("mock_table");
+    Mockito.doReturn(mockTableName).when(table).getName();
+  }
+
+  /**
+   * Test that {@link HFileOutputFormat2} RecordWriter uses compression and
+   * bloom filter settings from the column family descriptor
+   */
+  @Ignore("Goes zombie too frequently; needs work. See HBASE-14563") @Test
+  public void testColumnFamilySettings() throws Exception {
+    Configuration conf = new Configuration(this.util.getConfiguration());
+    RecordWriter<ImmutableBytesWritable, Cell> writer = null;
+    TaskAttemptContext context = null;
+    Path dir = util.getDataTestDir("testColumnFamilySettings");
+
+    // Setup table descriptor
+    Table table = Mockito.mock(Table.class);
+    RegionLocator regionLocator = Mockito.mock(RegionLocator.class);
+    HTableDescriptor htd = new HTableDescriptor(TABLE_NAMES[0]);
+    Mockito.doReturn(htd).when(table).getTableDescriptor();
+    for (HColumnDescriptor hcd: HBaseTestingUtility.generateColumnDescriptors()) {
+      htd.addFamily(hcd);
+    }
+
+    // set up the table to return some mock keys
+    setupMockStartKeys(regionLocator);
+
+    try {
+      // partial map red setup to get an operational writer for testing
+      // We turn off the sequence file compression, because DefaultCodec
+      // pollutes the GZip codec pool with an incompatible compressor.
+      conf.set("io.seqfile.compression.type", "NONE");
+      conf.set("hbase.fs.tmp.dir", dir.toString());
+      // turn locality off to eliminate getRegionLocation fail-and-retry time when writing kvs
+      conf.setBoolean(HFileOutputFormat2.LOCALITY_SENSITIVE_CONF_KEY, false);
+
+      Job job = new Job(conf, "testLocalMRIncrementalLoad");
+      job.setWorkingDirectory(util.getDataTestDirOnTestFS("testColumnFamilySettings"));
+      setupRandomGeneratorMapper(job, false);
+      HFileOutputFormat2.configureIncrementalLoad(job, table.getTableDescriptor(), regionLocator);
+      FileOutputFormat.setOutputPath(job, dir);
+      context = createTestTaskAttemptContext(job);
+      HFileOutputFormat2 hof = new HFileOutputFormat2();
+      writer = hof.getRecordWriter(context);
+
+      // write out random rows
+      writeRandomKeyValues(writer, context, htd.getFamiliesKeys(), ROWSPERSPLIT);
+      writer.close(context);
+
+      // Make sure that a directory was created for every CF
+      FileSystem fs = dir.getFileSystem(conf);
+
+      // commit so that the filesystem has one directory per column family
+      hof.getOutputCommitter(context).commitTask(context);
+      hof.getOutputCommitter(context).commitJob(context);
+      FileStatus[] families = FSUtils.listStatus(fs, dir, new FSUtils.FamilyDirFilter(fs));
+      assertEquals(htd.getFamilies().size(), families.length);
+      for (FileStatus f : families) {
+        String familyStr = f.getPath().getName();
+        HColumnDescriptor hcd = htd.getFamily(Bytes.toBytes(familyStr));
+        // verify that the compression on this file matches the configured
+        // compression
+        Path dataFilePath = fs.listStatus(f.getPath())[0].getPath();
+        Reader reader = HFile.createReader(fs, dataFilePath, new CacheConfig(conf), true, conf);
+        Map<byte[], byte[]> fileInfo = reader.loadFileInfo();
+
+        byte[] bloomFilter = fileInfo.get(StoreFile.BLOOM_FILTER_TYPE_KEY);
+        if (bloomFilter == null) bloomFilter = Bytes.toBytes("NONE");
+        assertEquals("Incorrect bloom filter used for column family " + familyStr +
+          "(reader: " + reader + ")",
+          hcd.getBloomFilterType(), BloomType.valueOf(Bytes.toString(bloomFilter)));
+        assertEquals("Incorrect compression used for column family " + familyStr +
+          "(reader: " + reader + ")", hcd.getCompressionType(), reader.getFileContext().getCompression());
+      }
+    } finally {
+      dir.getFileSystem(conf).delete(dir, true);
+    }
+  }
+
+  /**
+   * Write random values to the writer assuming a table created using
+   * {@link #FAMILIES} as column family descriptors
+   */
+  private void writeRandomKeyValues(RecordWriter<ImmutableBytesWritable, Cell> writer,
+      TaskAttemptContext context, Set<byte[]> families, int numRows)
+      throws IOException, InterruptedException {
+    byte keyBytes[] = new byte[Bytes.SIZEOF_INT];
+    int valLength = 10;
+    byte valBytes[] = new byte[valLength];
+
+    int taskId = context.getTaskAttemptID().getTaskID().getId();
+    assert taskId < Byte.MAX_VALUE : "Unit tests dont support > 127 tasks!";
+    final byte [] qualifier = Bytes.toBytes("data");
+    Random random = new Random();
+    for (int i = 0; i < numRows; i++) {
+
+      Bytes.putInt(keyBytes, 0, i);
+      random.nextBytes(valBytes);
+      ImmutableBytesWritable key = new ImmutableBytesWritable(keyBytes);
+
+      for (byte[] family : families) {
+        Cell kv = new KeyValue(keyBytes, family, qualifier, valBytes);
+        writer.write(key, kv);
+      }
+    }
+  }
+
+  /**
+   * This test is to test the scenario happened in HBASE-6901.
+   * All files are bulk loaded and excluded from minor compaction.
+   * Without the fix of HBASE-6901, an ArrayIndexOutOfBoundsException
+   * will be thrown.
+   */
+  @Ignore ("Flakey: See HBASE-9051") @Test
+  public void testExcludeAllFromMinorCompaction() throws Exception {
+    Configuration conf = util.getConfiguration();
+    conf.setInt("hbase.hstore.compaction.min", 2);
+    generateRandomStartKeys(5);
+
+    util.startMiniCluster();
+    try (Connection conn = ConnectionFactory.createConnection();
+        Admin admin = conn.getAdmin();
+        Table table = util.createTable(TABLE_NAMES[0], FAMILIES);
+        RegionLocator locator = conn.getRegionLocator(TABLE_NAMES[0])) {
+      final FileSystem fs = util.getDFSCluster().getFileSystem();
+      assertEquals("Should start with empty table", 0, util.countRows(table));
+
+      // deep inspection: get the StoreFile dir
+      final Path storePath = new Path(
+        FSUtils.getTableDir(FSUtils.getRootDir(conf), TABLE_NAMES[0]),
+          new Path(admin.getTableRegions(TABLE_NAMES[0]).get(0).getEncodedName(),
+            Bytes.toString(FAMILIES[0])));
+      assertEquals(0, fs.listStatus(storePath).length);
+
+      // Generate two bulk load files
+      conf.setBoolean("hbase.mapreduce.hfileoutputformat.compaction.exclude",
+          true);
+
+      for (int i = 0; i < 2; i++) {
+        Path testDir = util.getDataTestDirOnTestFS("testExcludeAllFromMinorCompaction_" + i);
+        runIncrementalPELoad(conf, Arrays.asList(new HFileOutputFormat2.TableInfo(table
+                .getTableDescriptor(), conn.getRegionLocator(TABLE_NAMES[0]))), testDir, false);
+        // Perform the actual load
+        new LoadIncrementalHFiles(conf).doBulkLoad(testDir, admin, table, locator);
+      }
+
+      // Ensure data shows up
+      int expectedRows = 2 * NMapInputFormat.getNumMapTasks(conf) * ROWSPERSPLIT;
+      assertEquals("LoadIncrementalHFiles should put expected data in table",
+          expectedRows, util.countRows(table));
+
+      // should have a second StoreFile now
+      assertEquals(2, fs.listStatus(storePath).length);
+
+      // minor compactions shouldn't get rid of the file
+      admin.compact(TABLE_NAMES[0]);
+      try {
+        quickPoll(new Callable<Boolean>() {
+          @Override
+          public Boolean call() throws Exception {
+            List<HRegion> regions = util.getMiniHBaseCluster().getRegions(TABLE_NAMES[0]);
+            for (HRegion region : regions) {
+              for (Store store : region.getStores()) {
+                store.closeAndArchiveCompactedFiles();
+              }
+            }
+            return fs.listStatus(storePath).length == 1;
+          }
+        }, 5000);
+        throw new IOException("SF# = " + fs.listStatus(storePath).length);
+      } catch (AssertionError ae) {
+        // this is expected behavior
+      }
+
+      // a major compaction should work though
+      admin.majorCompact(TABLE_NAMES[0]);
+      quickPoll(new Callable<Boolean>() {
+        @Override
+        public Boolean call() throws Exception {
+          List<HRegion> regions = util.getMiniHBaseCluster().getRegions(TABLE_NAMES[0]);
+          for (HRegion region : regions) {
+            for (Store store : region.getStores()) {
+              store.closeAndArchiveCompactedFiles();
+            }
+          }
+          return fs.listStatus(storePath).length == 1;
+        }
+      }, 5000);
+
+    } finally {
+      util.shutdownMiniCluster();
+    }
+  }
+
+  @Ignore("Goes zombie too frequently; needs work. See HBASE-14563") @Test
+  public void testExcludeMinorCompaction() throws Exception {
+    Configuration conf = util.getConfiguration();
+    conf.setInt("hbase.hstore.compaction.min", 2);
+    generateRandomStartKeys(5);
+
+    util.startMiniCluster();
+    try (Connection conn = ConnectionFactory.createConnection(conf);
+        Admin admin = conn.getAdmin()){
+      Path testDir = util.getDataTestDirOnTestFS("testExcludeMinorCompaction");
+      final FileSystem fs = util.getDFSCluster().getFileSystem();
+      Table table = util.createTable(TABLE_NAMES[0], FAMILIES);
+      assertEquals("Should start with empty table", 0, util.countRows(table));
+
+      // deep inspection: get the StoreFile dir
+      final Path storePath = new Path(
+        FSUtils.getTableDir(FSUtils.getRootDir(conf), TABLE_NAMES[0]),
+          new Path(admin.getTableRegions(TABLE_NAMES[0]).get(0).getEncodedName(),
+            Bytes.toString(FAMILIES[0])));
+      assertEquals(0, fs.listStatus(storePath).length);
+
+      // put some data in it and flush to create a storefile
+      Put p = new Put(Bytes.toBytes("test"));
+      p.addColumn(FAMILIES[0], Bytes.toBytes("1"), Bytes.toBytes("1"));
+      table.put(p);
+      admin.flush(TABLE_NAMES[0]);
+      assertEquals(1, util.countRows(table));
+      quickPoll(new Callable<Boolean>() {
+        @Override
+        public Boolean call() throws Exception {
+          return fs.listStatus(storePath).length == 1;
+        }
+      }, 5000);
+
+      // Generate a bulk load file with more rows
+      conf.setBoolean("hbase.mapreduce.hfileoutputformat.compaction.exclude",
+          true);
+
+      RegionLocator regionLocator = conn.getRegionLocator(TABLE_NAMES[0]);
+      runIncrementalPELoad(conf, Arrays.asList(new HFileOutputFormat2.TableInfo(table
+                      .getTableDescriptor(), regionLocator)), testDir, false);
+
+      // Perform the actual load
+      new LoadIncrementalHFiles(conf).doBulkLoad(testDir, admin, table, regionLocator);
+
+      // Ensure data shows up
+      int expectedRows = NMapInputFormat.getNumMapTasks(conf) * ROWSPERSPLIT;
+      assertEquals("LoadIncrementalHFiles should put expected data in table",
+          expectedRows + 1, util.countRows(table));
+
+      // should have a second StoreFile now
+      assertEquals(2, fs.listStatus(storePath).length);
+
+      // minor compactions shouldn't get rid of the file
+      admin.compact(TABLE_NAMES[0]);
+      try {
+        quickPoll(new Callable<Boolean>() {
+          @Override
+          public Boolean call() throws Exception {
+            return fs.listStatus(storePath).length == 1;
+          }
+        }, 5000);
+        throw new IOException("SF# = " + fs.listStatus(storePath).length);
+      } catch (AssertionError ae) {
+        // this is expected behavior
+      }
+
+      // a major compaction should work though
+      admin.majorCompact(TABLE_NAMES[0]);
+      quickPoll(new Callable<Boolean>() {
+        @Override
+        public Boolean call() throws Exception {
+          return fs.listStatus(storePath).length == 1;
+        }
+      }, 5000);
+
+    } finally {
+      util.shutdownMiniCluster();
+    }
+  }
+
+  private void quickPoll(Callable<Boolean> c, int waitMs) throws Exception {
+    int sleepMs = 10;
+    int retries = (int) Math.ceil(((double) waitMs) / sleepMs);
+    while (retries-- > 0) {
+      if (c.call().booleanValue()) {
+        return;
+      }
+      Thread.sleep(sleepMs);
+    }
+    fail();
+  }
+
+  public static void main(String args[]) throws Exception {
+    new TestHFileOutputFormat2().manualTest(args);
+  }
+
+  public void manualTest(String args[]) throws Exception {
+    Configuration conf = HBaseConfiguration.create();
+    util = new HBaseTestingUtility(conf);
+    if ("newtable".equals(args[0])) {
+      TableName tname = TableName.valueOf(args[1]);
+      byte[][] splitKeys = generateRandomSplitKeys(4);
+      Table table = util.createTable(tname, FAMILIES, splitKeys);
+    } else if ("incremental".equals(args[0])) {
+      TableName tname = TableName.valueOf(args[1]);
+      try(Connection c = ConnectionFactory.createConnection(conf);
+          Admin admin = c.getAdmin();
+          RegionLocator regionLocator = c.getRegionLocator(tname)) {
+        Path outDir = new Path("incremental-out");
+        runIncrementalPELoad(conf, Arrays.asList(new HFileOutputFormat2.TableInfo(admin
+                .getTableDescriptor(tname), regionLocator)), outDir, false);
+      }
+    } else {
+      throw new RuntimeException(
+          "usage: TestHFileOutputFormat2 newtable | incremental");
+    }
+  }
+
+  @Test
+  public void testBlockStoragePolicy() throws Exception {
+    util = new HBaseTestingUtility();
+    Configuration conf = util.getConfiguration();
+    conf.set(HFileOutputFormat2.STORAGE_POLICY_PROPERTY, "ALL_SSD");
+
+    conf.set(HFileOutputFormat2.STORAGE_POLICY_PROPERTY_CF_PREFIX +
+            Bytes.toString(HFileOutputFormat2.combineTableNameSuffix(
+                    TABLE_NAMES[0].getName(), FAMILIES[0])), "ONE_SSD");
+    Path cf1Dir = new Path(util.getDataTestDir(), Bytes.toString(FAMILIES[0]));
+    Path cf2Dir = new Path(util.getDataTestDir(), Bytes.toString(FAMILIES[1]));
+    util.startMiniDFSCluster(3);
+    FileSystem fs = util.getDFSCluster().getFileSystem();
+    try {
+      fs.mkdirs(cf1Dir);
+      fs.mkdirs(cf2Dir);
+
+      // the original block storage policy would be HOT
+      String spA = getStoragePolicyName(fs, cf1Dir);
+      String spB = getStoragePolicyName(fs, cf2Dir);
+      LOG.debug("Storage policy of cf 0: [" + spA + "].");
+      LOG.debug("Storage policy of cf 1: [" + spB + "].");
+      assertEquals("HOT", spA);
+      assertEquals("HOT", spB);
+
+      // alter table cf schema to change storage policies
+      HFileOutputFormat2.configureStoragePolicy(conf, fs,
+              HFileOutputFormat2.combineTableNameSuffix(TABLE_NAMES[0].getName(), FAMILIES[0]), cf1Dir);
+      HFileOutputFormat2.configureStoragePolicy(conf, fs,
+              HFileOutputFormat2.combineTableNameSuffix(TABLE_NAMES[0].getName(), FAMILIES[1]), cf2Dir);
+      spA = getStoragePolicyName(fs, cf1Dir);
+      spB = getStoragePolicyName(fs, cf2Dir);
+      LOG.debug("Storage policy of cf 0: [" + spA + "].");
+      LOG.debug("Storage policy of cf 1: [" + spB + "].");
+      assertNotNull(spA);
+      assertEquals("ONE_SSD", spA);
+      assertNotNull(spB);
+      assertEquals("ALL_SSD", spB);
+    } finally {
+      fs.delete(cf1Dir, true);
+      fs.delete(cf2Dir, true);
+      util.shutdownMiniDFSCluster();
+    }
+  }
+
+  private String getStoragePolicyName(FileSystem fs, Path path) {
+    try {
+      Object blockStoragePolicySpi = ReflectionUtils.invokeMethod(fs, "getStoragePolicy", path);
+      return (String) ReflectionUtils.invokeMethod(blockStoragePolicySpi, "getName");
+    } catch (Exception e) {
+      // Maybe fail because of using old HDFS version, try the old way
+      if (LOG.isTraceEnabled()) {
+        LOG.trace("Failed to get policy directly", e);
+      }
+      String policy = getStoragePolicyNameForOldHDFSVersion(fs, path);
+      return policy == null ? "HOT" : policy;// HOT by default
+    }
+  }
+
+  private String getStoragePolicyNameForOldHDFSVersion(FileSystem fs, Path path) {
+    try {
+      if (fs instanceof DistributedFileSystem) {
+        DistributedFileSystem dfs = (DistributedFileSystem) fs;
+        HdfsFileStatus status = dfs.getClient().getFileInfo(path.toUri().getPath());
+        if (null != status) {
+          byte storagePolicyId = status.getStoragePolicy();
+          Field idUnspecified = BlockStoragePolicySuite.class.getField("ID_UNSPECIFIED");
+          if (storagePolicyId != idUnspecified.getByte(BlockStoragePolicySuite.class)) {
+            BlockStoragePolicy[] policies = dfs.getStoragePolicies();
+            for (BlockStoragePolicy policy : policies) {
+              if (policy.getId() == storagePolicyId) {
+                return policy.getName();
+              }
+            }
+          }
+        }
+      }
+    } catch (Throwable e) {
+      LOG.warn("failed to get block storage policy of [" + path + "]", e);
+    }
+
+    return null;
+  }
+}
+

http://git-wip-us.apache.org/repos/asf/hbase/blob/664b6be0/hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestHRegionPartitioner.java
----------------------------------------------------------------------
diff --git a/hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestHRegionPartitioner.java b/hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestHRegionPartitioner.java
new file mode 100644
index 0000000..c0debb4
--- /dev/null
+++ b/hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestHRegionPartitioner.java
@@ -0,0 +1,71 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more contributor license
+ * agreements. See the NOTICE file distributed with this work for additional information regarding
+ * copyright ownership. The ASF licenses this file to you under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with the License. You may
+ * obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the
+ * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
+ * either express or implied. See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.hadoop.hbase.mapreduce;
+
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.hbase.HBaseTestingUtility;
+import org.apache.hadoop.hbase.TableName;
+import org.apache.hadoop.hbase.testclassification.MapReduceTests;
+import org.apache.hadoop.hbase.testclassification.MediumTests;
+import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
+import org.apache.hadoop.hbase.util.Bytes;
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.experimental.categories.Category;
+import org.junit.rules.TestName;
+
+import static org.junit.Assert.assertEquals;
+
+@Category({MapReduceTests.class, MediumTests.class})
+public class TestHRegionPartitioner {
+  private static final HBaseTestingUtility UTIL = new HBaseTestingUtility();
+
+  @Rule
+  public TestName name = new TestName();
+
+  @BeforeClass
+  public static void beforeClass() throws Exception {
+    UTIL.startMiniCluster();
+  }
+
+  @AfterClass
+  public static void afterClass() throws Exception {
+    UTIL.shutdownMiniCluster();
+  }
+
+  /**
+   * Test HRegionPartitioner
+   */
+  @Test (timeout=300000)
+  public void testHRegionPartitioner() throws Exception {
+
+    byte[][] families = { Bytes.toBytes("familyA"), Bytes.toBytes("familyB") };
+
+    UTIL.createTable(TableName.valueOf(name.getMethodName()), families, 1,
+    Bytes.toBytes("aa"), Bytes.toBytes("cc"), 3);
+
+    HRegionPartitioner<Long, Long> partitioner = new HRegionPartitioner<>();
+    Configuration configuration = UTIL.getConfiguration();
+    configuration.set(TableOutputFormat.OUTPUT_TABLE, name.getMethodName());
+    partitioner.setConf(configuration);
+    ImmutableBytesWritable writable = new ImmutableBytesWritable(Bytes.toBytes("bb"));
+
+    assertEquals(1, partitioner.getPartition(writable, 10L, 3));
+    assertEquals(0, partitioner.getPartition(writable, 10L, 1));
+  }
+}

http://git-wip-us.apache.org/repos/asf/hbase/blob/664b6be0/hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestHashTable.java
----------------------------------------------------------------------
diff --git a/hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestHashTable.java b/hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestHashTable.java
new file mode 100644
index 0000000..87e7852
--- /dev/null
+++ b/hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestHashTable.java
@@ -0,0 +1,194 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.hadoop.hbase.mapreduce;
+
+import static org.junit.Assert.assertEquals;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.apache.hadoop.fs.FileStatus;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.hbase.HBaseTestingUtility;
+import org.apache.hadoop.hbase.TableName;
+import org.apache.hadoop.hbase.client.Put;
+import org.apache.hadoop.hbase.client.Table;
+import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
+import org.apache.hadoop.hbase.testclassification.LargeTests;
+import org.apache.hadoop.hbase.util.Bytes;
+import org.apache.hadoop.io.MapFile;
+import org.junit.AfterClass;
+import org.junit.Assert;
+import org.junit.BeforeClass;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.experimental.categories.Category;
+
+import org.apache.hadoop.hbase.shaded.com.google.common.collect.ImmutableMap;
+import org.apache.hadoop.hbase.shaded.com.google.common.collect.Maps;
+import org.junit.rules.TestName;
+
+/**
+ * Basic test for the HashTable M/R tool
+ */
+@Category(LargeTests.class)
+public class TestHashTable {
+
+  private static final Log LOG = LogFactory.getLog(TestHashTable.class);
+
+  private static final HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
+
+  @Rule
+  public TestName name = new TestName();
+
+  @BeforeClass
+  public static void beforeClass() throws Exception {
+    TEST_UTIL.startMiniCluster(3);
+  }
+
+  @AfterClass
+  public static void afterClass() throws Exception {
+    TEST_UTIL.shutdownMiniCluster();
+  }
+
+  @Test
+  public void testHashTable() throws Exception {
+    final TableName tableName = TableName.valueOf(name.getMethodName());
+    final byte[] family = Bytes.toBytes("family");
+    final byte[] column1 = Bytes.toBytes("c1");
+    final byte[] column2 = Bytes.toBytes("c2");
+    final byte[] column3 = Bytes.toBytes("c3");
+
+    int numRows = 100;
+    int numRegions = 10;
+    int numHashFiles = 3;
+
+    byte[][] splitRows = new byte[numRegions-1][];
+    for (int i = 1; i < numRegions; i++) {
+      splitRows[i-1] = Bytes.toBytes(numRows * i / numRegions);
+    }
+
+    long timestamp = 1430764183454L;
+    // put rows into the first table
+    Table t1 = TEST_UTIL.createTable(tableName, family, splitRows);
+    for (int i = 0; i < numRows; i++) {
+      Put p = new Put(Bytes.toBytes(i), timestamp);
+      p.addColumn(family, column1, column1);
+      p.addColumn(family, column2, column2);
+      p.addColumn(family, column3, column3);
+      t1.put(p);
+    }
+    t1.close();
+
+    HashTable hashTable = new HashTable(TEST_UTIL.getConfiguration());
+
+    Path testDir = TEST_UTIL.getDataTestDirOnTestFS(tableName.getNameAsString());
+
+    long batchSize = 300;
+    int code = hashTable.run(new String[] {
+        "--batchsize=" + batchSize,
+        "--numhashfiles=" + numHashFiles,
+        "--scanbatch=2",
+        tableName.getNameAsString(),
+        testDir.toString()});
+    assertEquals("test job failed", 0, code);
+
+    FileSystem fs = TEST_UTIL.getTestFileSystem();
+
+    HashTable.TableHash tableHash = HashTable.TableHash.read(fs.getConf(), testDir);
+    assertEquals(tableName.getNameAsString(), tableHash.tableName);
+    assertEquals(batchSize, tableHash.batchSize);
+    assertEquals(numHashFiles, tableHash.numHashFiles);
+    assertEquals(numHashFiles - 1, tableHash.partitions.size());
+    for (ImmutableBytesWritable bytes : tableHash.partitions) {
+      LOG.debug("partition: " + Bytes.toInt(bytes.get()));
+    }
+
+    ImmutableMap<Integer, ImmutableBytesWritable> expectedHashes
+      = ImmutableMap.<Integer, ImmutableBytesWritable>builder()
+      .put(-1, new ImmutableBytesWritable(Bytes.fromHex("714cb10a9e3b5569852980edd8c6ca2f")))
+      .put(5, new ImmutableBytesWritable(Bytes.fromHex("28d961d9252ce8f8d44a07b38d3e1d96")))
+      .put(10, new ImmutableBytesWritable(Bytes.fromHex("f6bbc4a224d8fd929b783a92599eaffa")))
+      .put(15, new ImmutableBytesWritable(Bytes.fromHex("522deb5d97f73a414ecc11457be46881")))
+      .put(20, new ImmutableBytesWritable(Bytes.fromHex("b026f2611aaa46f7110116d807545352")))
+      .put(25, new ImmutableBytesWritable(Bytes.fromHex("39ffc1a3094aa12a2e90ffd9cef2ce93")))
+      .put(30, new ImmutableBytesWritable(Bytes.fromHex("f6b4d75727ce9a30ac29e4f08f601666")))
+      .put(35, new ImmutableBytesWritable(Bytes.fromHex("422e2d2f1eb79a8f02171a705a42c090")))
+      .put(40, new ImmutableBytesWritable(Bytes.fromHex("559ad61c900fffefea0a15abf8a97bc3")))
+      .put(45, new ImmutableBytesWritable(Bytes.fromHex("23019084513eca41cee436b2a29611cb")))
+      .put(50, new ImmutableBytesWritable(Bytes.fromHex("b40467d222ddb4949b142fe145ee9edc")))
+      .put(55, new ImmutableBytesWritable(Bytes.fromHex("372bf89fcd8ca4b7ab3c1add9d07f7e4")))
+      .put(60, new ImmutableBytesWritable(Bytes.fromHex("69ae0585e6255de27dce974e332b8f8b")))
+      .put(65, new ImmutableBytesWritable(Bytes.fromHex("8029610044297aad0abdbecd485d8e59")))
+      .put(70, new ImmutableBytesWritable(Bytes.fromHex("de5f784f7f78987b6e57ecfd81c8646f")))
+      .put(75, new ImmutableBytesWritable(Bytes.fromHex("1cd757cc4e1715c8c3b1c24447a1ec56")))
+      .put(80, new ImmutableBytesWritable(Bytes.fromHex("f9a53aacfeb6142b08066615e7038095")))
+      .put(85, new ImmutableBytesWritable(Bytes.fromHex("89b872b7e639df32d3276b33928c0c91")))
+      .put(90, new ImmutableBytesWritable(Bytes.fromHex("45eeac0646d46a474ea0484175faed38")))
+      .put(95, new ImmutableBytesWritable(Bytes.fromHex("f57c447e32a08f4bf1abb2892839ac56")))
+      .build();
+
+    Map<Integer, ImmutableBytesWritable> actualHashes = new HashMap<>();
+    Path dataDir = new Path(testDir, HashTable.HASH_DATA_DIR);
+    for (int i = 0; i < numHashFiles; i++) {
+      Path hashPath = new Path(dataDir, HashTable.TableHash.getDataFileName(i));
+
+      MapFile.Reader reader = new MapFile.Reader(hashPath, fs.getConf());
+      ImmutableBytesWritable key = new ImmutableBytesWritable();
+      ImmutableBytesWritable hash = new ImmutableBytesWritable();
+      while(reader.next(key, hash)) {
+        String keyString = Bytes.toHex(key.get(), key.getOffset(), key.getLength());
+        LOG.debug("Key: " + (keyString.isEmpty() ? "-1" : Integer.parseInt(keyString, 16))
+            + " Hash: " + Bytes.toHex(hash.get(), hash.getOffset(), hash.getLength()));
+
+        int intKey = -1;
+        if (key.getLength() > 0) {
+          intKey = Bytes.toInt(key.get(),  key.getOffset(), key.getLength());
+        }
+        if (actualHashes.containsKey(intKey)) {
+          Assert.fail("duplicate key in data files: " + intKey);
+        }
+        actualHashes.put(intKey, new ImmutableBytesWritable(hash.copyBytes()));
+      }
+      reader.close();
+    }
+
+    FileStatus[] files = fs.listStatus(testDir);
+    for (FileStatus file : files) {
+      LOG.debug("Output file: " + file.getPath());
+    }
+
+    files = fs.listStatus(dataDir);
+    for (FileStatus file : files) {
+      LOG.debug("Data file: " + file.getPath());
+    }
+
+    if (!expectedHashes.equals(actualHashes)) {
+      LOG.error("Diff: " + Maps.difference(expectedHashes, actualHashes));
+    }
+    Assert.assertEquals(expectedHashes, actualHashes);
+
+    TEST_UTIL.deleteTable(tableName);
+    TEST_UTIL.cleanupDataTestDirOnTestFS();
+  }
+
+
+}