org.apache.hadoop.hbase.io.hfile

Class BlockCacheFactory

java.lang.Object

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

@InterfaceAudience.Private
public final class BlockCacheFactory
extends Object

Field Summary

Fields

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

Method Summary

Modifier and Type	Method and Description
static BlockCache	createBlockCache(org.apache.hadoop.conf.Configuration conf)
static BlockCache	createBlockCache(org.apache.hadoop.conf.Configuration conf, Map<String,HRegion> onlineRegions)

Methods inherited from class java.lang.Object

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

Field Detail

BLOCKCACHE_POLICY_KEY

public static final String BLOCKCACHE_POLICY_KEY

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

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Constant Field Values

BLOCKCACHE_POLICY_DEFAULT

public static final String BLOCKCACHE_POLICY_DEFAULT

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Constant Field Values

BUCKET_CACHE_WRITER_THREADS_KEY

public static final String BUCKET_CACHE_WRITER_THREADS_KEY

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Constant Field Values

BUCKET_CACHE_WRITER_QUEUE_KEY

public static final String BUCKET_CACHE_WRITER_QUEUE_KEY

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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.

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Constant Field Values

DEFAULT_BUCKET_CACHE_WRITER_THREADS

public static final int DEFAULT_BUCKET_CACHE_WRITER_THREADS

Defaults for Bucket cache

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Constant Field Values

DEFAULT_BUCKET_CACHE_WRITER_QUEUE

public static final int DEFAULT_BUCKET_CACHE_WRITER_QUEUE

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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.

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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.

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Constant Field Values

DEFAULT_BLOCKCACHE_STATS_PERIOD_MINUTES

public static final int DEFAULT_BLOCKCACHE_STATS_PERIOD_MINUTES

Default window period length in minutes.

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Constant Field Values

BLOCKCACHE_STATS_PERIODS

public static final String BLOCKCACHE_STATS_PERIODS

The total number of periods in the window.

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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.

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Constant Field Values

Method Detail

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)