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*
* 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
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package org.apache.hadoop.hbase.io.hfile;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.EnumMap;
import java.util.List;
import java.util.Map;
import java.util.Random;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hbase.HBaseTestingUtility;
import org.apache.hadoop.hbase.HColumnDescriptor;
import org.apache.hadoop.hbase.KeyValue;
import org.apache.hadoop.hbase.MediumTests;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.fs.HFileSystem;
import org.apache.hadoop.hbase.io.compress.Compression;
import org.apache.hadoop.hbase.io.encoding.DataBlockEncoding;
import org.apache.hadoop.hbase.regionserver.HRegion;
import org.apache.hadoop.hbase.regionserver.StoreFile;
import org.apache.hadoop.hbase.regionserver.StoreFile.BloomType;
import org.apache.hadoop.hbase.util.BloomFilterFactory;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.hbase.util.ChecksumType;
import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;
/**
* Tests {@link HFile} cache-on-write functionality for the following block
* types: data blocks, non-root index blocks, and Bloom filter blocks.
*/
@RunWith(Parameterized.class)
@Category(MediumTests.class)
public class TestCacheOnWrite {
private static final Log LOG = LogFactory.getLog(TestCacheOnWrite.class);
private static final HBaseTestingUtility TEST_UTIL =
new HBaseTestingUtility();
private Configuration conf;
private CacheConfig cacheConf;
private FileSystem fs;
private Random rand = new Random(12983177L);
private Path storeFilePath;
private BlockCache blockCache;
private String testDescription;
private final CacheOnWriteType cowType;
private final Compression.Algorithm compress;
private final BlockEncoderTestType encoderType;
private final HFileDataBlockEncoder encoder;
private static final int DATA_BLOCK_SIZE = 2048;
private static final int NUM_KV = 25000;
private static final int INDEX_BLOCK_SIZE = 512;
private static final int BLOOM_BLOCK_SIZE = 4096;
private static final BloomType BLOOM_TYPE = StoreFile.BloomType.ROWCOL;
private static final ChecksumType CKTYPE = ChecksumType.CRC32;
private static final int CKBYTES = 512;
/** The number of valid key types possible in a store file */
private static final int NUM_VALID_KEY_TYPES =
KeyValue.Type.values().length - 2;
private static enum CacheOnWriteType {
DATA_BLOCKS(CacheConfig.CACHE_BLOCKS_ON_WRITE_KEY,
BlockType.DATA, BlockType.ENCODED_DATA),
BLOOM_BLOCKS(CacheConfig.CACHE_BLOOM_BLOCKS_ON_WRITE_KEY,
BlockType.BLOOM_CHUNK),
INDEX_BLOCKS(CacheConfig.CACHE_INDEX_BLOCKS_ON_WRITE_KEY,
BlockType.LEAF_INDEX, BlockType.INTERMEDIATE_INDEX);
private final String confKey;
private final BlockType blockType1;
private final BlockType blockType2;
private CacheOnWriteType(String confKey, BlockType blockType) {
this(confKey, blockType, blockType);
}
private CacheOnWriteType(String confKey, BlockType blockType1,
BlockType blockType2) {
this.blockType1 = blockType1;
this.blockType2 = blockType2;
this.confKey = confKey;
}
public boolean shouldBeCached(BlockType blockType) {
return blockType == blockType1 || blockType == blockType2;
}
public void modifyConf(Configuration conf) {
for (CacheOnWriteType cowType : CacheOnWriteType.values()) {
conf.setBoolean(cowType.confKey, cowType == this);
}
}
}
private static final DataBlockEncoding ENCODING_ALGO =
DataBlockEncoding.PREFIX;
/** Provides fancy names for three combinations of two booleans */
private static enum BlockEncoderTestType {
NO_BLOCK_ENCODING(false, false),
BLOCK_ENCODING_IN_CACHE_ONLY(false, true),
BLOCK_ENCODING_EVERYWHERE(true, true);
private final boolean encodeOnDisk;
private final boolean encodeInCache;
BlockEncoderTestType(boolean encodeOnDisk, boolean encodeInCache) {
this.encodeOnDisk = encodeOnDisk;
this.encodeInCache = encodeInCache;
}
public HFileDataBlockEncoder getEncoder() {
return new HFileDataBlockEncoderImpl(
encodeOnDisk ? ENCODING_ALGO : DataBlockEncoding.NONE,
encodeInCache ? ENCODING_ALGO : DataBlockEncoding.NONE);
}
}
public TestCacheOnWrite(CacheOnWriteType cowType,
Compression.Algorithm compress, BlockEncoderTestType encoderType) {
this.cowType = cowType;
this.compress = compress;
this.encoderType = encoderType;
this.encoder = encoderType.getEncoder();
testDescription = "[cacheOnWrite=" + cowType + ", compress=" + compress +
", encoderType=" + encoderType + "]";
System.out.println(testDescription);
}
@Parameters
public static Collection<Object[]> getParameters() {
List<Object[]> cowTypes = new ArrayList<Object[]>();
for (CacheOnWriteType cowType : CacheOnWriteType.values()) {
for (Compression.Algorithm compress :
HBaseTestingUtility.COMPRESSION_ALGORITHMS) {
for (BlockEncoderTestType encoderType :
BlockEncoderTestType.values()) {
cowTypes.add(new Object[] { cowType, compress, encoderType });
}
}
}
return cowTypes;
}
@Before
public void setUp() throws IOException {
conf = TEST_UTIL.getConfiguration();
conf.setInt(HFile.FORMAT_VERSION_KEY, HFile.MAX_FORMAT_VERSION);
conf.setInt(HFileBlockIndex.MAX_CHUNK_SIZE_KEY, INDEX_BLOCK_SIZE);
conf.setInt(BloomFilterFactory.IO_STOREFILE_BLOOM_BLOCK_SIZE,
BLOOM_BLOCK_SIZE);
conf.setBoolean(CacheConfig.CACHE_BLOCKS_ON_WRITE_KEY,
cowType.shouldBeCached(BlockType.DATA));
conf.setBoolean(CacheConfig.CACHE_INDEX_BLOCKS_ON_WRITE_KEY,
cowType.shouldBeCached(BlockType.LEAF_INDEX));
conf.setBoolean(CacheConfig.CACHE_BLOOM_BLOCKS_ON_WRITE_KEY,
cowType.shouldBeCached(BlockType.BLOOM_CHUNK));
cowType.modifyConf(conf);
fs = HFileSystem.get(conf);
cacheConf = new CacheConfig(conf);
blockCache = cacheConf.getBlockCache();
}
@After
public void tearDown() {
cacheConf = new CacheConfig(conf);
blockCache = cacheConf.getBlockCache();
}
@Test
public void testStoreFileCacheOnWrite() throws IOException {
writeStoreFile();
readStoreFile();
}
private void readStoreFile() throws IOException {
HFileReaderV2 reader = (HFileReaderV2) HFile.createReaderWithEncoding(fs,
storeFilePath, cacheConf, encoder.getEncodingInCache());
LOG.info("HFile information: " + reader);
final boolean cacheBlocks = false;
final boolean pread = false;
HFileScanner scanner = reader.getScanner(cacheBlocks, pread);
assertTrue(testDescription, scanner.seekTo());
long offset = 0;
HFileBlock prevBlock = null;
EnumMap<BlockType, Integer> blockCountByType =
new EnumMap<BlockType, Integer>(BlockType.class);
DataBlockEncoding encodingInCache =
encoderType.getEncoder().getEncodingInCache();
while (offset < reader.getTrailer().getLoadOnOpenDataOffset()) {
long onDiskSize = -1;
if (prevBlock != null) {
onDiskSize = prevBlock.getNextBlockOnDiskSizeWithHeader();
}
// Flags: don't cache the block, use pread, this is not a compaction.
// Also, pass null for expected block type to avoid checking it.
HFileBlock block = reader.readBlock(offset, onDiskSize, false, true,
false, null);
BlockCacheKey blockCacheKey = new BlockCacheKey(reader.getName(),
offset, encodingInCache, block.getBlockType());
boolean isCached = blockCache.getBlock(blockCacheKey, true, false) != null;
boolean shouldBeCached = cowType.shouldBeCached(block.getBlockType());
if (shouldBeCached != isCached) {
throw new AssertionError(
"shouldBeCached: " + shouldBeCached+ "\n" +
"isCached: " + isCached + "\n" +
"Test description: " + testDescription + "\n" +
"block: " + block + "\n" +
"encodingInCache: " + encodingInCache + "\n" +
"blockCacheKey: " + blockCacheKey);
}
prevBlock = block;
offset += block.getOnDiskSizeWithHeader();
BlockType bt = block.getBlockType();
Integer count = blockCountByType.get(bt);
blockCountByType.put(bt, (count == null ? 0 : count) + 1);
}
LOG.info("Block count by type: " + blockCountByType);
String countByType = blockCountByType.toString();
BlockType cachedDataBlockType =
encoderType.encodeInCache ? BlockType.ENCODED_DATA : BlockType.DATA;
assertEquals("{" + cachedDataBlockType
+ "=1379, LEAF_INDEX=173, BLOOM_CHUNK=9, INTERMEDIATE_INDEX=24}",
countByType);
reader.close();
}
public static KeyValue.Type generateKeyType(Random rand) {
if (rand.nextBoolean()) {
// Let's make half of KVs puts.
return KeyValue.Type.Put;
} else {
KeyValue.Type keyType =
KeyValue.Type.values()[1 + rand.nextInt(NUM_VALID_KEY_TYPES)];
if (keyType == KeyValue.Type.Minimum || keyType == KeyValue.Type.Maximum)
{
throw new RuntimeException("Generated an invalid key type: " + keyType
+ ". " + "Probably the layout of KeyValue.Type has changed.");
}
return keyType;
}
}
public void writeStoreFile() throws IOException {
Path storeFileParentDir = new Path(TEST_UTIL.getDataTestDir(),
"test_cache_on_write");
StoreFile.Writer sfw = new StoreFile.WriterBuilder(conf, cacheConf, fs,
DATA_BLOCK_SIZE)
.withOutputDir(storeFileParentDir)
.withCompression(compress)
.withDataBlockEncoder(encoder)
.withComparator(KeyValue.COMPARATOR)
.withBloomType(BLOOM_TYPE)
.withMaxKeyCount(NUM_KV)
.withChecksumType(CKTYPE)
.withBytesPerChecksum(CKBYTES)
.build();
final int rowLen = 32;
for (int i = 0; i < NUM_KV; ++i) {
byte[] k = TestHFileWriterV2.randomOrderedKey(rand, i);
byte[] v = TestHFileWriterV2.randomValue(rand);
int cfLen = rand.nextInt(k.length - rowLen + 1);
KeyValue kv = new KeyValue(
k, 0, rowLen,
k, rowLen, cfLen,
k, rowLen + cfLen, k.length - rowLen - cfLen,
rand.nextLong(),
generateKeyType(rand),
v, 0, v.length);
sfw.append(kv);
}
sfw.close();
storeFilePath = sfw.getPath();
}
@Test
public void testNotCachingDataBlocksDuringCompaction() throws IOException {
// TODO: need to change this test if we add a cache size threshold for
// compactions, or if we implement some other kind of intelligent logic for
// deciding what blocks to cache-on-write on compaction.
final String table = "CompactionCacheOnWrite";
final String cf = "myCF";
final byte[] cfBytes = Bytes.toBytes(cf);
final int maxVersions = 3;
HRegion region = TEST_UTIL.createTestRegion(table,
new HColumnDescriptor(cf)
.setCompressionType(compress)
.setBloomFilterType(BLOOM_TYPE)
.setMaxVersions(maxVersions)
.setDataBlockEncoding(encoder.getEncodingInCache())
.setEncodeOnDisk(encoder.getEncodingOnDisk() !=
DataBlockEncoding.NONE)
);
int rowIdx = 0;
long ts = EnvironmentEdgeManager.currentTimeMillis();
for (int iFile = 0; iFile < 5; ++iFile) {
for (int iRow = 0; iRow < 500; ++iRow) {
String rowStr = "" + (rowIdx * rowIdx * rowIdx) + "row" + iFile + "_" +
iRow;
Put p = new Put(Bytes.toBytes(rowStr));
++rowIdx;
for (int iCol = 0; iCol < 10; ++iCol) {
String qualStr = "col" + iCol;
String valueStr = "value_" + rowStr + "_" + qualStr;
for (int iTS = 0; iTS < 5; ++iTS) {
p.add(cfBytes, Bytes.toBytes(qualStr), ts++,
Bytes.toBytes(valueStr));
}
}
region.put(p);
}
region.flushcache();
}
LruBlockCache blockCache =
(LruBlockCache) new CacheConfig(conf).getBlockCache();
blockCache.clearCache();
assertEquals(0, blockCache.getBlockTypeCountsForTest().size());
region.compactStores();
LOG.debug("compactStores() returned");
Map<BlockType, Integer> blockTypesInCache =
blockCache.getBlockTypeCountsForTest();
LOG.debug("Block types in cache: " + blockTypesInCache);
assertNull(blockTypesInCache.get(BlockType.DATA));
region.close();
blockCache.shutdown();
}
}