Path baseDir = new Path(new Path(this.testDir, "7e0102"),"twoCOWEOC");
// Grab the block cache and get the initial hit/miss counts
BlockCache bc = new CacheConfig(conf).getBlockCache();
assertNotNull(bc);
CacheStats cs = bc.getStats();
long startHit = cs.getHitCount();
long startMiss = cs.getMissCount();
long startEvicted = cs.getEvictedCount();
// Let's write a StoreFile with three blocks, with cache on write off
conf.setBoolean(CacheConfig.CACHE_BLOCKS_ON_WRITE_KEY, false);
CacheConfig cacheConf = new CacheConfig(conf);
Path pathCowOff = new Path(baseDir, "123456789");
StoreFile.Writer writer = writeStoreFile(conf, cacheConf, pathCowOff, 3);
StoreFile hsf = new StoreFile(this.fs, writer.getPath(), conf, cacheConf,
StoreFile.BloomType.NONE, NoOpDataBlockEncoder.INSTANCE);
LOG.debug(hsf.getPath().toString());
// Read this file, we should see 3 misses
StoreFile.Reader reader = hsf.createReader();
reader.loadFileInfo();
StoreFileScanner scanner = reader.getStoreFileScanner(true, true);
scanner.seek(KeyValue.LOWESTKEY);
while (scanner.next() != null);
assertEquals(startHit, cs.getHitCount());
assertEquals(startMiss + 3, cs.getMissCount());
assertEquals(startEvicted, cs.getEvictedCount());
startMiss += 3;
scanner.close();
reader.close(cacheConf.shouldEvictOnClose());
// Now write a StoreFile with three blocks, with cache on write on
conf.setBoolean(CacheConfig.CACHE_BLOCKS_ON_WRITE_KEY, true);
cacheConf = new CacheConfig(conf);
Path pathCowOn = new Path(baseDir, "123456788");
writer = writeStoreFile(conf, cacheConf, pathCowOn, 3);
hsf = new StoreFile(this.fs, writer.getPath(), conf, cacheConf,
StoreFile.BloomType.NONE, NoOpDataBlockEncoder.INSTANCE);
// Read this file, we should see 3 hits
reader = hsf.createReader();
scanner = reader.getStoreFileScanner(true, true);
scanner.seek(KeyValue.LOWESTKEY);
while (scanner.next() != null);
assertEquals(startHit + 3, cs.getHitCount());
assertEquals(startMiss, cs.getMissCount());
assertEquals(startEvicted, cs.getEvictedCount());
startHit += 3;
scanner.close();
reader.close(cacheConf.shouldEvictOnClose());
// Let's read back the two files to ensure the blocks exactly match
hsf = new StoreFile(this.fs, pathCowOff, conf, cacheConf,
StoreFile.BloomType.NONE, NoOpDataBlockEncoder.INSTANCE);
StoreFile.Reader readerOne = hsf.createReader();
readerOne.loadFileInfo();
StoreFileScanner scannerOne = readerOne.getStoreFileScanner(true, true);
scannerOne.seek(KeyValue.LOWESTKEY);
hsf = new StoreFile(this.fs, pathCowOn, conf, cacheConf,
StoreFile.BloomType.NONE, NoOpDataBlockEncoder.INSTANCE);
StoreFile.Reader readerTwo = hsf.createReader();
readerTwo.loadFileInfo();
StoreFileScanner scannerTwo = readerTwo.getStoreFileScanner(true, true);
scannerTwo.seek(KeyValue.LOWESTKEY);
KeyValue kv1 = null;
KeyValue kv2 = null;
while ((kv1 = scannerOne.next()) != null) {
kv2 = scannerTwo.next();
assertTrue(kv1.equals(kv2));
assertTrue(Bytes.compareTo(
kv1.getBuffer(), kv1.getKeyOffset(), kv1.getKeyLength(),
kv2.getBuffer(), kv2.getKeyOffset(), kv2.getKeyLength()) == 0);
assertTrue(Bytes.compareTo(
kv1.getBuffer(), kv1.getValueOffset(), kv1.getValueLength(),
kv2.getBuffer(), kv2.getValueOffset(), kv2.getValueLength()) == 0);
}
assertNull(scannerTwo.next());
assertEquals(startHit + 6, cs.getHitCount());
assertEquals(startMiss, cs.getMissCount());
assertEquals(startEvicted, cs.getEvictedCount());
startHit += 6;
scannerOne.close();
readerOne.close(cacheConf.shouldEvictOnClose());
scannerTwo.close();
readerTwo.close(cacheConf.shouldEvictOnClose());
// Let's close the first file with evict on close turned on
conf.setBoolean("hbase.rs.evictblocksonclose", true);
cacheConf = new CacheConfig(conf);
hsf = new StoreFile(this.fs, pathCowOff, conf, cacheConf,
StoreFile.BloomType.NONE, NoOpDataBlockEncoder.INSTANCE);
reader = hsf.createReader();
reader.close(cacheConf.shouldEvictOnClose());
// We should have 3 new evictions
assertEquals(startHit, cs.getHitCount());
assertEquals(startMiss, cs.getMissCount());
assertEquals(startEvicted + 3, cs.getEvictedCount());
startEvicted += 3;
// Let's close the second file with evict on close turned off
conf.setBoolean("hbase.rs.evictblocksonclose", false);
cacheConf = new CacheConfig(conf);
hsf = new StoreFile(this.fs, pathCowOn, conf, cacheConf,
StoreFile.BloomType.NONE, NoOpDataBlockEncoder.INSTANCE);
reader = hsf.createReader();
reader.close(cacheConf.shouldEvictOnClose());
// We expect no changes
assertEquals(startHit, cs.getHitCount());
assertEquals(startMiss, cs.getMissCount());
assertEquals(startEvicted, cs.getEvictedCount());
}