Package org.apache.hadoop.hbase.io.hfile

Class BlockCacheFactory

java.lang.Object

org.apache.hadoop.hbase.io.hfile.BlockCacheFactory

@Private
public final class BlockCacheFactory
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static enum	BlockCacheFactory.ExternalBlockCaches	Enum of all built in external block caches.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	BLOCKCACHE_BLOCKSIZE_KEY	The target block size used by blockcache instances.
static final String	BLOCKCACHE_POLICY_DEFAULT
static final String	BLOCKCACHE_POLICY_KEY	Configuration key to cache block policy (Lru, TinyLfu, AdaptiveLRU, IndexOnlyLRU).
static final String	BLOCKCACHE_STATS_PERIOD_MINUTES_KEY	The window period length in minutes for CacheStats rolling metrics.
static final String	BLOCKCACHE_STATS_PERIODS	The total number of periods in the window.
static final String	BUCKET_CACHE_BUCKETS_KEY	A comma-delimited array of values for use as bucket sizes.
static final String	BUCKET_CACHE_WRITER_QUEUE_KEY
static final String	BUCKET_CACHE_WRITER_THREADS_KEY
static final int	DEFAULT_BLOCKCACHE_STATS_PERIOD_MINUTES	Default window period length in minutes.
static final int	DEFAULT_BLOCKCACHE_STATS_PERIODS	Default number of periods in the window.
static final int	DEFAULT_BUCKET_CACHE_WRITER_QUEUE
static final int	DEFAULT_BUCKET_CACHE_WRITER_THREADS	Defaults for Bucket cache
(package private) static final String	DEPRECATED_BLOCKCACHE_BLOCKSIZE_KEY	Deprecated. use BLOCKCACHE_BLOCKSIZE_KEY instead.
private static final String	EXTERNAL_BLOCKCACHE_CLASS_KEY
private static final boolean	EXTERNAL_BLOCKCACHE_DEFAULT
private static final String	EXTERNAL_BLOCKCACHE_KEY
private static final org.slf4j.Logger	LOG

Constructor Summary

Constructors

Modifier	Constructor	Description
private	BlockCacheFactory()

Method Summary

Modifier and Type	Method	Description
static BlockCache	createBlockCache(org.apache.hadoop.conf.Configuration conf)
static BlockCache	createBlockCache(org.apache.hadoop.conf.Configuration conf, Map<String,HRegion> onlineRegions)
private static BucketCache	createBucketCache(org.apache.hadoop.conf.Configuration c, Map<String,HRegion> onlineRegions)
private static BlockCache	createExternalBlockcache(org.apache.hadoop.conf.Configuration c)
private static FirstLevelBlockCache	createFirstLevelCache(org.apache.hadoop.conf.Configuration c)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

LOG

private static final org.slf4j.Logger LOG

BLOCKCACHE_POLICY_KEY

public static final String BLOCKCACHE_POLICY_KEY

Configuration key to cache block policy (Lru, TinyLfu, AdaptiveLRU, IndexOnlyLRU).

See Also:

• Constant Field Values

BLOCKCACHE_POLICY_DEFAULT

public static final String BLOCKCACHE_POLICY_DEFAULT

See Also:

• Constant Field Values

BUCKET_CACHE_WRITER_THREADS_KEY

public static final String BUCKET_CACHE_WRITER_THREADS_KEY

See Also:

• Constant Field Values

BUCKET_CACHE_WRITER_QUEUE_KEY

public static final String BUCKET_CACHE_WRITER_QUEUE_KEY

See Also:

• Constant Field Values

BUCKET_CACHE_BUCKETS_KEY

public static final String BUCKET_CACHE_BUCKETS_KEY

A comma-delimited array of values for use as bucket sizes.

See Also:

• Constant Field Values

DEFAULT_BUCKET_CACHE_WRITER_THREADS

public static final int DEFAULT_BUCKET_CACHE_WRITER_THREADS

Defaults for Bucket cache

See Also:

• Constant Field Values

DEFAULT_BUCKET_CACHE_WRITER_QUEUE

public static final int DEFAULT_BUCKET_CACHE_WRITER_QUEUE

See Also:

• Constant Field Values

BLOCKCACHE_BLOCKSIZE_KEY

public static final String BLOCKCACHE_BLOCKSIZE_KEY

The target block size used by blockcache instances. Defaults to HConstants.DEFAULT_BLOCKSIZE.

See Also:

• Constant Field Values

EXTERNAL_BLOCKCACHE_KEY

private static final String EXTERNAL_BLOCKCACHE_KEY

See Also:

• Constant Field Values

EXTERNAL_BLOCKCACHE_DEFAULT

private static final boolean EXTERNAL_BLOCKCACHE_DEFAULT

See Also:

• Constant Field Values

EXTERNAL_BLOCKCACHE_CLASS_KEY

private static final String EXTERNAL_BLOCKCACHE_CLASS_KEY

See Also:

• Constant Field Values

DEPRECATED_BLOCKCACHE_BLOCKSIZE_KEY

@Deprecated
static final String DEPRECATED_BLOCKCACHE_BLOCKSIZE_KEY

Deprecated.

use BLOCKCACHE_BLOCKSIZE_KEY instead.

See Also:

• Constant Field Values

BLOCKCACHE_STATS_PERIOD_MINUTES_KEY

public static final String BLOCKCACHE_STATS_PERIOD_MINUTES_KEY

The window period length in minutes for CacheStats rolling metrics.

See Also:

• Constant Field Values

DEFAULT_BLOCKCACHE_STATS_PERIOD_MINUTES

public static final int DEFAULT_BLOCKCACHE_STATS_PERIOD_MINUTES

Default window period length in minutes.

See Also:

• Constant Field Values

BLOCKCACHE_STATS_PERIODS

public static final String BLOCKCACHE_STATS_PERIODS

The total number of periods in the window.

See Also:

• Constant Field Values

DEFAULT_BLOCKCACHE_STATS_PERIODS

public static final int DEFAULT_BLOCKCACHE_STATS_PERIODS

Default number of periods in the window. We define 12 periods of 5 minutes to give an hourly split of 5 minutes periods.

See Also:

• Constant Field Values

Constructor Details

BlockCacheFactory

private BlockCacheFactory()

Method Details

createBlockCache

public static BlockCache createBlockCache(org.apache.hadoop.conf.Configuration conf,
 Map<String,HRegion> onlineRegions)

createBlockCache

public static BlockCache createBlockCache(org.apache.hadoop.conf.Configuration conf)

createFirstLevelCache

private static FirstLevelBlockCache createFirstLevelCache(org.apache.hadoop.conf.Configuration c)

createExternalBlockcache

private static BlockCache createExternalBlockcache(org.apache.hadoop.conf.Configuration c)

createBucketCache

private static BucketCache createBucketCache(org.apache.hadoop.conf.Configuration c,
 Map<String,HRegion> onlineRegions)