http://git-wip-us.apache.org/repos/asf/hbase-site/blob/e2f20c83/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/CacheConfig.ExternalBlockCaches.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/CacheConfig.ExternalBlockCaches.html b/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/CacheConfig.ExternalBlockCaches.html index bf17b37..4af2d9a 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/CacheConfig.ExternalBlockCaches.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/CacheConfig.ExternalBlockCaches.html @@ -555,182 +555,199 @@ <span class="sourceLineNo">547</span> // Clear this if in tests you'd make more than one block cache instance.<a name="line.547"></a> <span class="sourceLineNo">548</span> @VisibleForTesting<a name="line.548"></a> <span class="sourceLineNo">549</span> static BlockCache GLOBAL_BLOCK_CACHE_INSTANCE;<a name="line.549"></a> -<span class="sourceLineNo">550</span> private static LruBlockCache GLOBAL_L1_CACHE_INSTANCE;<a name="line.550"></a> -<span class="sourceLineNo">551</span><a name="line.551"></a> -<span class="sourceLineNo">552</span> /** Boolean whether we have disabled the block cache entirely. */<a name="line.552"></a> -<span class="sourceLineNo">553</span> @VisibleForTesting<a name="line.553"></a> -<span class="sourceLineNo">554</span> static boolean blockCacheDisabled = false;<a name="line.554"></a> -<span class="sourceLineNo">555</span><a name="line.555"></a> -<span class="sourceLineNo">556</span> /**<a name="line.556"></a> -<span class="sourceLineNo">557</span> * @param c Configuration to use.<a name="line.557"></a> -<span class="sourceLineNo">558</span> * @return An L1 instance. Currently an instance of LruBlockCache.<a name="line.558"></a> -<span class="sourceLineNo">559</span> */<a name="line.559"></a> -<span class="sourceLineNo">560</span> public static LruBlockCache getL1(final Configuration c) {<a name="line.560"></a> -<span class="sourceLineNo">561</span> return getL1Internal(c);<a name="line.561"></a> -<span class="sourceLineNo">562</span> }<a name="line.562"></a> -<span class="sourceLineNo">563</span><a name="line.563"></a> -<span class="sourceLineNo">564</span> /**<a name="line.564"></a> -<span class="sourceLineNo">565</span> * @param c Configuration to use.<a name="line.565"></a> -<span class="sourceLineNo">566</span> * @return An L1 instance. Currently an instance of LruBlockCache.<a name="line.566"></a> -<span class="sourceLineNo">567</span> */<a name="line.567"></a> -<span class="sourceLineNo">568</span> private synchronized static LruBlockCache getL1Internal(final Configuration c) {<a name="line.568"></a> -<span class="sourceLineNo">569</span> if (GLOBAL_L1_CACHE_INSTANCE != null) return GLOBAL_L1_CACHE_INSTANCE;<a name="line.569"></a> -<span class="sourceLineNo">570</span> final long lruCacheSize = MemorySizeUtil.getLruCacheSize(c);<a name="line.570"></a> -<span class="sourceLineNo">571</span> if (lruCacheSize < 0) {<a name="line.571"></a> -<span class="sourceLineNo">572</span> blockCacheDisabled = true;<a name="line.572"></a> -<span class="sourceLineNo">573</span> }<a name="line.573"></a> -<span class="sourceLineNo">574</span> if (blockCacheDisabled) return null;<a name="line.574"></a> -<span class="sourceLineNo">575</span> int blockSize = c.getInt(BLOCKCACHE_BLOCKSIZE_KEY, HConstants.DEFAULT_BLOCKSIZE);<a name="line.575"></a> -<span class="sourceLineNo">576</span> LOG.info("Allocating LruBlockCache size=" +<a name="line.576"></a> -<span class="sourceLineNo">577</span> StringUtils.byteDesc(lruCacheSize) + ", blockSize=" + StringUtils.byteDesc(blockSize));<a name="line.577"></a> -<span class="sourceLineNo">578</span> GLOBAL_L1_CACHE_INSTANCE = new LruBlockCache(lruCacheSize, blockSize, true, c);<a name="line.578"></a> -<span class="sourceLineNo">579</span> return GLOBAL_L1_CACHE_INSTANCE;<a name="line.579"></a> -<span class="sourceLineNo">580</span> }<a name="line.580"></a> -<span class="sourceLineNo">581</span><a name="line.581"></a> -<span class="sourceLineNo">582</span> /**<a name="line.582"></a> -<span class="sourceLineNo">583</span> * @param c Configuration to use.<a name="line.583"></a> -<span class="sourceLineNo">584</span> * @return Returns L2 block cache instance (for now it is BucketCache BlockCache all the time)<a name="line.584"></a> -<span class="sourceLineNo">585</span> * or null if not supposed to be a L2.<a name="line.585"></a> -<span class="sourceLineNo">586</span> */<a name="line.586"></a> -<span class="sourceLineNo">587</span> @VisibleForTesting<a name="line.587"></a> -<span class="sourceLineNo">588</span> static BlockCache getL2(final Configuration c) {<a name="line.588"></a> -<span class="sourceLineNo">589</span> final boolean useExternal = c.getBoolean(EXTERNAL_BLOCKCACHE_KEY, EXTERNAL_BLOCKCACHE_DEFAULT);<a name="line.589"></a> -<span class="sourceLineNo">590</span> if (LOG.isDebugEnabled()) {<a name="line.590"></a> -<span class="sourceLineNo">591</span> LOG.debug("Trying to use " + (useExternal?" External":" Internal") + " l2 cache");<a name="line.591"></a> -<span class="sourceLineNo">592</span> }<a name="line.592"></a> -<span class="sourceLineNo">593</span><a name="line.593"></a> -<span class="sourceLineNo">594</span> // If we want to use an external block cache then create that.<a name="line.594"></a> -<span class="sourceLineNo">595</span> if (useExternal) {<a name="line.595"></a> -<span class="sourceLineNo">596</span> return getExternalBlockcache(c);<a name="line.596"></a> -<span class="sourceLineNo">597</span> }<a name="line.597"></a> -<span class="sourceLineNo">598</span> // otherwise use the bucket cache.<a name="line.598"></a> -<span class="sourceLineNo">599</span> return getBucketCache(c);<a name="line.599"></a> -<span class="sourceLineNo">600</span> }<a name="line.600"></a> -<span class="sourceLineNo">601</span><a name="line.601"></a> -<span class="sourceLineNo">602</span> private static BlockCache getExternalBlockcache(Configuration c) {<a name="line.602"></a> -<span class="sourceLineNo">603</span> Class klass = null;<a name="line.603"></a> -<span class="sourceLineNo">604</span><a name="line.604"></a> -<span class="sourceLineNo">605</span> // Get the class, from the config. s<a name="line.605"></a> -<span class="sourceLineNo">606</span> try {<a name="line.606"></a> -<span class="sourceLineNo">607</span> klass = ExternalBlockCaches.valueOf(c.get(EXTERNAL_BLOCKCACHE_CLASS_KEY, "memcache")).clazz;<a name="line.607"></a> -<span class="sourceLineNo">608</span> } catch (IllegalArgumentException exception) {<a name="line.608"></a> -<span class="sourceLineNo">609</span> try {<a name="line.609"></a> -<span class="sourceLineNo">610</span> klass = c.getClass(EXTERNAL_BLOCKCACHE_CLASS_KEY, Class.forName(<a name="line.610"></a> -<span class="sourceLineNo">611</span> "org.apache.hadoop.hbase.io.hfile.MemcachedBlockCache"));<a name="line.611"></a> -<span class="sourceLineNo">612</span> } catch (ClassNotFoundException e) {<a name="line.612"></a> -<span class="sourceLineNo">613</span> return null;<a name="line.613"></a> -<span class="sourceLineNo">614</span> }<a name="line.614"></a> +<span class="sourceLineNo">550</span> private static LruBlockCache GLOBAL_L1_CACHE_INSTANCE = null;<a name="line.550"></a> +<span class="sourceLineNo">551</span> private static BlockCache GLOBAL_L2_CACHE_INSTANCE = null;<a name="line.551"></a> +<span class="sourceLineNo">552</span><a name="line.552"></a> +<span class="sourceLineNo">553</span> /** Boolean whether we have disabled the block cache entirely. */<a name="line.553"></a> +<span class="sourceLineNo">554</span> @VisibleForTesting<a name="line.554"></a> +<span class="sourceLineNo">555</span> static boolean blockCacheDisabled = false;<a name="line.555"></a> +<span class="sourceLineNo">556</span><a name="line.556"></a> +<span class="sourceLineNo">557</span> /**<a name="line.557"></a> +<span class="sourceLineNo">558</span> * @param c Configuration to use.<a name="line.558"></a> +<span class="sourceLineNo">559</span> * @return An L1 instance. Currently an instance of LruBlockCache.<a name="line.559"></a> +<span class="sourceLineNo">560</span> */<a name="line.560"></a> +<span class="sourceLineNo">561</span> public static LruBlockCache getL1(final Configuration c) {<a name="line.561"></a> +<span class="sourceLineNo">562</span> return getL1Internal(c);<a name="line.562"></a> +<span class="sourceLineNo">563</span> }<a name="line.563"></a> +<span class="sourceLineNo">564</span><a name="line.564"></a> +<span class="sourceLineNo">565</span> public CacheStats getL1Stats() {<a name="line.565"></a> +<span class="sourceLineNo">566</span> if (GLOBAL_L1_CACHE_INSTANCE != null) {<a name="line.566"></a> +<span class="sourceLineNo">567</span> return GLOBAL_L1_CACHE_INSTANCE.getStats();<a name="line.567"></a> +<span class="sourceLineNo">568</span> }<a name="line.568"></a> +<span class="sourceLineNo">569</span> return null;<a name="line.569"></a> +<span class="sourceLineNo">570</span> }<a name="line.570"></a> +<span class="sourceLineNo">571</span><a name="line.571"></a> +<span class="sourceLineNo">572</span> public CacheStats getL2Stats() {<a name="line.572"></a> +<span class="sourceLineNo">573</span> if (GLOBAL_L2_CACHE_INSTANCE != null) {<a name="line.573"></a> +<span class="sourceLineNo">574</span> return GLOBAL_L2_CACHE_INSTANCE.getStats();<a name="line.574"></a> +<span class="sourceLineNo">575</span> }<a name="line.575"></a> +<span class="sourceLineNo">576</span> return null;<a name="line.576"></a> +<span class="sourceLineNo">577</span> }<a name="line.577"></a> +<span class="sourceLineNo">578</span><a name="line.578"></a> +<span class="sourceLineNo">579</span> /**<a name="line.579"></a> +<span class="sourceLineNo">580</span> * @param c Configuration to use.<a name="line.580"></a> +<span class="sourceLineNo">581</span> * @return An L1 instance. Currently an instance of LruBlockCache.<a name="line.581"></a> +<span class="sourceLineNo">582</span> */<a name="line.582"></a> +<span class="sourceLineNo">583</span> private synchronized static LruBlockCache getL1Internal(final Configuration c) {<a name="line.583"></a> +<span class="sourceLineNo">584</span> if (GLOBAL_L1_CACHE_INSTANCE != null) return GLOBAL_L1_CACHE_INSTANCE;<a name="line.584"></a> +<span class="sourceLineNo">585</span> final long lruCacheSize = MemorySizeUtil.getLruCacheSize(c);<a name="line.585"></a> +<span class="sourceLineNo">586</span> if (lruCacheSize < 0) {<a name="line.586"></a> +<span class="sourceLineNo">587</span> blockCacheDisabled = true;<a name="line.587"></a> +<span class="sourceLineNo">588</span> }<a name="line.588"></a> +<span class="sourceLineNo">589</span> if (blockCacheDisabled) return null;<a name="line.589"></a> +<span class="sourceLineNo">590</span> int blockSize = c.getInt(BLOCKCACHE_BLOCKSIZE_KEY, HConstants.DEFAULT_BLOCKSIZE);<a name="line.590"></a> +<span class="sourceLineNo">591</span> LOG.info("Allocating LruBlockCache size=" +<a name="line.591"></a> +<span class="sourceLineNo">592</span> StringUtils.byteDesc(lruCacheSize) + ", blockSize=" + StringUtils.byteDesc(blockSize));<a name="line.592"></a> +<span class="sourceLineNo">593</span> GLOBAL_L1_CACHE_INSTANCE = new LruBlockCache(lruCacheSize, blockSize, true, c);<a name="line.593"></a> +<span class="sourceLineNo">594</span> return GLOBAL_L1_CACHE_INSTANCE;<a name="line.594"></a> +<span class="sourceLineNo">595</span> }<a name="line.595"></a> +<span class="sourceLineNo">596</span><a name="line.596"></a> +<span class="sourceLineNo">597</span> /**<a name="line.597"></a> +<span class="sourceLineNo">598</span> * @param c Configuration to use.<a name="line.598"></a> +<span class="sourceLineNo">599</span> * @return Returns L2 block cache instance (for now it is BucketCache BlockCache all the time)<a name="line.599"></a> +<span class="sourceLineNo">600</span> * or null if not supposed to be a L2.<a name="line.600"></a> +<span class="sourceLineNo">601</span> */<a name="line.601"></a> +<span class="sourceLineNo">602</span> @VisibleForTesting<a name="line.602"></a> +<span class="sourceLineNo">603</span> static BlockCache getL2(final Configuration c) {<a name="line.603"></a> +<span class="sourceLineNo">604</span> final boolean useExternal = c.getBoolean(EXTERNAL_BLOCKCACHE_KEY, EXTERNAL_BLOCKCACHE_DEFAULT);<a name="line.604"></a> +<span class="sourceLineNo">605</span> if (LOG.isDebugEnabled()) {<a name="line.605"></a> +<span class="sourceLineNo">606</span> LOG.debug("Trying to use " + (useExternal?" External":" Internal") + " l2 cache");<a name="line.606"></a> +<span class="sourceLineNo">607</span> }<a name="line.607"></a> +<span class="sourceLineNo">608</span><a name="line.608"></a> +<span class="sourceLineNo">609</span> // If we want to use an external block cache then create that.<a name="line.609"></a> +<span class="sourceLineNo">610</span> if (useExternal) {<a name="line.610"></a> +<span class="sourceLineNo">611</span> GLOBAL_L2_CACHE_INSTANCE = getExternalBlockcache(c);<a name="line.611"></a> +<span class="sourceLineNo">612</span> } else {<a name="line.612"></a> +<span class="sourceLineNo">613</span> // otherwise use the bucket cache.<a name="line.613"></a> +<span class="sourceLineNo">614</span> GLOBAL_L2_CACHE_INSTANCE = getBucketCache(c);<a name="line.614"></a> <span class="sourceLineNo">615</span> }<a name="line.615"></a> -<span class="sourceLineNo">616</span><a name="line.616"></a> -<span class="sourceLineNo">617</span> // Now try and create an instance of the block cache.<a name="line.617"></a> -<span class="sourceLineNo">618</span> try {<a name="line.618"></a> -<span class="sourceLineNo">619</span> LOG.info("Creating external block cache of type: " + klass);<a name="line.619"></a> -<span class="sourceLineNo">620</span> return (BlockCache) ReflectionUtils.newInstance(klass, c);<a name="line.620"></a> -<span class="sourceLineNo">621</span> } catch (Exception e) {<a name="line.621"></a> -<span class="sourceLineNo">622</span> LOG.warn("Error creating external block cache", e);<a name="line.622"></a> -<span class="sourceLineNo">623</span> }<a name="line.623"></a> -<span class="sourceLineNo">624</span> return null;<a name="line.624"></a> -<span class="sourceLineNo">625</span><a name="line.625"></a> -<span class="sourceLineNo">626</span> }<a name="line.626"></a> -<span class="sourceLineNo">627</span><a name="line.627"></a> -<span class="sourceLineNo">628</span> private static BlockCache getBucketCache(Configuration c) {<a name="line.628"></a> -<span class="sourceLineNo">629</span> // Check for L2. ioengine name must be non-null.<a name="line.629"></a> -<span class="sourceLineNo">630</span> String bucketCacheIOEngineName = c.get(BUCKET_CACHE_IOENGINE_KEY, null);<a name="line.630"></a> -<span class="sourceLineNo">631</span> if (bucketCacheIOEngineName == null || bucketCacheIOEngineName.length() <= 0) return null;<a name="line.631"></a> -<span class="sourceLineNo">632</span><a name="line.632"></a> -<span class="sourceLineNo">633</span> int blockSize = c.getInt(BLOCKCACHE_BLOCKSIZE_KEY, HConstants.DEFAULT_BLOCKSIZE);<a name="line.633"></a> -<span class="sourceLineNo">634</span> final long bucketCacheSize = MemorySizeUtil.getBucketCacheSize(c);<a name="line.634"></a> -<span class="sourceLineNo">635</span> if (bucketCacheSize <= 0) {<a name="line.635"></a> -<span class="sourceLineNo">636</span> throw new IllegalStateException("bucketCacheSize <= 0; Check " +<a name="line.636"></a> -<span class="sourceLineNo">637</span> BUCKET_CACHE_SIZE_KEY + " setting and/or server java heap size");<a name="line.637"></a> -<span class="sourceLineNo">638</span> }<a name="line.638"></a> -<span class="sourceLineNo">639</span> if (c.get("hbase.bucketcache.percentage.in.combinedcache") != null) {<a name="line.639"></a> -<span class="sourceLineNo">640</span> LOG.warn("Configuration 'hbase.bucketcache.percentage.in.combinedcache' is no longer "<a name="line.640"></a> -<span class="sourceLineNo">641</span> + "respected. See comments in http://hbase.apache.org/book.html#_changes_of_note";);<a name="line.641"></a> -<span class="sourceLineNo">642</span> }<a name="line.642"></a> -<span class="sourceLineNo">643</span> int writerThreads = c.getInt(BUCKET_CACHE_WRITER_THREADS_KEY,<a name="line.643"></a> -<span class="sourceLineNo">644</span> DEFAULT_BUCKET_CACHE_WRITER_THREADS);<a name="line.644"></a> -<span class="sourceLineNo">645</span> int writerQueueLen = c.getInt(BUCKET_CACHE_WRITER_QUEUE_KEY,<a name="line.645"></a> -<span class="sourceLineNo">646</span> DEFAULT_BUCKET_CACHE_WRITER_QUEUE);<a name="line.646"></a> -<span class="sourceLineNo">647</span> String persistentPath = c.get(BUCKET_CACHE_PERSISTENT_PATH_KEY);<a name="line.647"></a> -<span class="sourceLineNo">648</span> String[] configuredBucketSizes = c.getStrings(BUCKET_CACHE_BUCKETS_KEY);<a name="line.648"></a> -<span class="sourceLineNo">649</span> int [] bucketSizes = null;<a name="line.649"></a> -<span class="sourceLineNo">650</span> if (configuredBucketSizes != null) {<a name="line.650"></a> -<span class="sourceLineNo">651</span> bucketSizes = new int[configuredBucketSizes.length];<a name="line.651"></a> -<span class="sourceLineNo">652</span> for (int i = 0; i < configuredBucketSizes.length; i++) {<a name="line.652"></a> -<span class="sourceLineNo">653</span> int bucketSize = Integer.parseInt(configuredBucketSizes[i].trim());<a name="line.653"></a> -<span class="sourceLineNo">654</span> if (bucketSize % 256 != 0) {<a name="line.654"></a> -<span class="sourceLineNo">655</span> // We need all the bucket sizes to be multiples of 256. Having all the configured bucket<a name="line.655"></a> -<span class="sourceLineNo">656</span> // sizes to be multiples of 256 will ensure that the block offsets within buckets,<a name="line.656"></a> -<span class="sourceLineNo">657</span> // that are calculated, will also be multiples of 256.<a name="line.657"></a> -<span class="sourceLineNo">658</span> // See BucketEntry where offset to each block is represented using 5 bytes (instead of 8<a name="line.658"></a> -<span class="sourceLineNo">659</span> // bytes long). We would like to save heap overhead as less as possible.<a name="line.659"></a> -<span class="sourceLineNo">660</span> throw new IllegalArgumentException("Illegal value: " + bucketSize + " configured for '"<a name="line.660"></a> -<span class="sourceLineNo">661</span> + BUCKET_CACHE_BUCKETS_KEY + "'. All bucket sizes to be multiples of 256");<a name="line.661"></a> -<span class="sourceLineNo">662</span> }<a name="line.662"></a> -<span class="sourceLineNo">663</span> bucketSizes[i] = bucketSize;<a name="line.663"></a> -<span class="sourceLineNo">664</span> }<a name="line.664"></a> -<span class="sourceLineNo">665</span> }<a name="line.665"></a> -<span class="sourceLineNo">666</span> BucketCache bucketCache = null;<a name="line.666"></a> -<span class="sourceLineNo">667</span> try {<a name="line.667"></a> -<span class="sourceLineNo">668</span> int ioErrorsTolerationDuration = c.getInt(<a name="line.668"></a> -<span class="sourceLineNo">669</span> "hbase.bucketcache.ioengine.errors.tolerated.duration",<a name="line.669"></a> -<span class="sourceLineNo">670</span> BucketCache.DEFAULT_ERROR_TOLERATION_DURATION);<a name="line.670"></a> -<span class="sourceLineNo">671</span> // Bucket cache logs its stats on creation internal to the constructor.<a name="line.671"></a> -<span class="sourceLineNo">672</span> bucketCache = new BucketCache(bucketCacheIOEngineName,<a name="line.672"></a> -<span class="sourceLineNo">673</span> bucketCacheSize, blockSize, bucketSizes, writerThreads, writerQueueLen, persistentPath,<a name="line.673"></a> -<span class="sourceLineNo">674</span> ioErrorsTolerationDuration, c);<a name="line.674"></a> -<span class="sourceLineNo">675</span> } catch (IOException ioex) {<a name="line.675"></a> -<span class="sourceLineNo">676</span> LOG.error("Can't instantiate bucket cache", ioex); throw new RuntimeException(ioex);<a name="line.676"></a> -<span class="sourceLineNo">677</span> }<a name="line.677"></a> -<span class="sourceLineNo">678</span> return bucketCache;<a name="line.678"></a> -<span class="sourceLineNo">679</span> }<a name="line.679"></a> -<span class="sourceLineNo">680</span><a name="line.680"></a> -<span class="sourceLineNo">681</span> /**<a name="line.681"></a> -<span class="sourceLineNo">682</span> * Returns the block cache or <code>null</code> in case none should be used.<a name="line.682"></a> -<span class="sourceLineNo">683</span> * Sets GLOBAL_BLOCK_CACHE_INSTANCE<a name="line.683"></a> -<span class="sourceLineNo">684</span> *<a name="line.684"></a> -<span class="sourceLineNo">685</span> * @param conf The current configuration.<a name="line.685"></a> -<span class="sourceLineNo">686</span> * @return The block cache or <code>null</code>.<a name="line.686"></a> -<span class="sourceLineNo">687</span> */<a name="line.687"></a> -<span class="sourceLineNo">688</span> public static synchronized BlockCache instantiateBlockCache(Configuration conf) {<a name="line.688"></a> -<span class="sourceLineNo">689</span> if (GLOBAL_BLOCK_CACHE_INSTANCE != null) return GLOBAL_BLOCK_CACHE_INSTANCE;<a name="line.689"></a> -<span class="sourceLineNo">690</span> if (blockCacheDisabled) return null;<a name="line.690"></a> -<span class="sourceLineNo">691</span> LruBlockCache l1 = getL1Internal(conf);<a name="line.691"></a> -<span class="sourceLineNo">692</span> // blockCacheDisabled is set as a side-effect of getL1Internal(), so check it again after the call.<a name="line.692"></a> -<span class="sourceLineNo">693</span> if (blockCacheDisabled) return null;<a name="line.693"></a> -<span class="sourceLineNo">694</span> BlockCache l2 = getL2(conf);<a name="line.694"></a> -<span class="sourceLineNo">695</span> if (l2 == null) {<a name="line.695"></a> -<span class="sourceLineNo">696</span> GLOBAL_BLOCK_CACHE_INSTANCE = l1;<a name="line.696"></a> -<span class="sourceLineNo">697</span> } else {<a name="line.697"></a> -<span class="sourceLineNo">698</span> boolean useExternal = conf.getBoolean(EXTERNAL_BLOCKCACHE_KEY, EXTERNAL_BLOCKCACHE_DEFAULT);<a name="line.698"></a> -<span class="sourceLineNo">699</span> boolean combinedWithLru = conf.getBoolean(BUCKET_CACHE_COMBINED_KEY,<a name="line.699"></a> -<span class="sourceLineNo">700</span> DEFAULT_BUCKET_CACHE_COMBINED);<a name="line.700"></a> -<span class="sourceLineNo">701</span> if (useExternal) {<a name="line.701"></a> -<span class="sourceLineNo">702</span> GLOBAL_BLOCK_CACHE_INSTANCE = new InclusiveCombinedBlockCache(l1, l2);<a name="line.702"></a> -<span class="sourceLineNo">703</span> } else {<a name="line.703"></a> -<span class="sourceLineNo">704</span> if (combinedWithLru) {<a name="line.704"></a> -<span class="sourceLineNo">705</span> GLOBAL_BLOCK_CACHE_INSTANCE = new CombinedBlockCache(l1, l2);<a name="line.705"></a> -<span class="sourceLineNo">706</span> } else {<a name="line.706"></a> -<span class="sourceLineNo">707</span> // L1 and L2 are not 'combined'. 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See comments in http://hbase.apache.org/book.html#_changes_of_note";);<a name="line.658"></a> +<span class="sourceLineNo">659</span> }<a name="line.659"></a> +<span class="sourceLineNo">660</span> int writerThreads = c.getInt(BUCKET_CACHE_WRITER_THREADS_KEY,<a name="line.660"></a> +<span class="sourceLineNo">661</span> DEFAULT_BUCKET_CACHE_WRITER_THREADS);<a name="line.661"></a> +<span class="sourceLineNo">662</span> int writerQueueLen = c.getInt(BUCKET_CACHE_WRITER_QUEUE_KEY,<a name="line.662"></a> +<span class="sourceLineNo">663</span> DEFAULT_BUCKET_CACHE_WRITER_QUEUE);<a name="line.663"></a> +<span class="sourceLineNo">664</span> String persistentPath = c.get(BUCKET_CACHE_PERSISTENT_PATH_KEY);<a name="line.664"></a> +<span class="sourceLineNo">665</span> String[] configuredBucketSizes = c.getStrings(BUCKET_CACHE_BUCKETS_KEY);<a name="line.665"></a> +<span class="sourceLineNo">666</span> int [] bucketSizes = null;<a name="line.666"></a> +<span class="sourceLineNo">667</span> if (configuredBucketSizes != null) {<a name="line.667"></a> +<span class="sourceLineNo">668</span> bucketSizes = new int[configuredBucketSizes.length];<a name="line.668"></a> +<span class="sourceLineNo">669</span> for (int i = 0; i < configuredBucketSizes.length; i++) {<a name="line.669"></a> +<span class="sourceLineNo">670</span> int bucketSize = Integer.parseInt(configuredBucketSizes[i].trim());<a name="line.670"></a> +<span class="sourceLineNo">671</span> if (bucketSize % 256 != 0) {<a name="line.671"></a> +<span class="sourceLineNo">672</span> // We need all the bucket sizes to be multiples of 256. 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All bucket sizes to be multiples of 256");<a name="line.678"></a> +<span class="sourceLineNo">679</span> }<a name="line.679"></a> +<span class="sourceLineNo">680</span> bucketSizes[i] = bucketSize;<a name="line.680"></a> +<span class="sourceLineNo">681</span> }<a name="line.681"></a> +<span class="sourceLineNo">682</span> }<a name="line.682"></a> +<span class="sourceLineNo">683</span> BucketCache bucketCache = null;<a name="line.683"></a> +<span class="sourceLineNo">684</span> try {<a name="line.684"></a> +<span class="sourceLineNo">685</span> int ioErrorsTolerationDuration = c.getInt(<a name="line.685"></a> +<span class="sourceLineNo">686</span> "hbase.bucketcache.ioengine.errors.tolerated.duration",<a name="line.686"></a> +<span class="sourceLineNo">687</span> BucketCache.DEFAULT_ERROR_TOLERATION_DURATION);<a name="line.687"></a> +<span class="sourceLineNo">688</span> // Bucket cache logs its stats on creation internal to the constructor.<a name="line.688"></a> +<span class="sourceLineNo">689</span> bucketCache = new BucketCache(bucketCacheIOEngineName,<a name="line.689"></a> +<span class="sourceLineNo">690</span> bucketCacheSize, blockSize, bucketSizes, writerThreads, writerQueueLen, persistentPath,<a name="line.690"></a> +<span class="sourceLineNo">691</span> ioErrorsTolerationDuration, c);<a name="line.691"></a> +<span class="sourceLineNo">692</span> } catch (IOException ioex) {<a name="line.692"></a> +<span class="sourceLineNo">693</span> LOG.error("Can't instantiate bucket cache", ioex); throw new RuntimeException(ioex);<a name="line.693"></a> +<span class="sourceLineNo">694</span> }<a name="line.694"></a> +<span class="sourceLineNo">695</span> return bucketCache;<a name="line.695"></a> +<span class="sourceLineNo">696</span> }<a name="line.696"></a> +<span class="sourceLineNo">697</span><a name="line.697"></a> +<span class="sourceLineNo">698</span> /**<a name="line.698"></a> +<span class="sourceLineNo">699</span> * Returns the block cache or <code>null</code> in case none should be used.<a name="line.699"></a> +<span class="sourceLineNo">700</span> * Sets GLOBAL_BLOCK_CACHE_INSTANCE<a name="line.700"></a> +<span class="sourceLineNo">701</span> *<a name="line.701"></a> +<span class="sourceLineNo">702</span> * @param conf The current configuration.<a name="line.702"></a> +<span class="sourceLineNo">703</span> * @return The block cache or <code>null</code>.<a name="line.703"></a> +<span class="sourceLineNo">704</span> */<a name="line.704"></a> +<span class="sourceLineNo">705</span> public static synchronized BlockCache instantiateBlockCache(Configuration conf) {<a name="line.705"></a> +<span class="sourceLineNo">706</span> if (GLOBAL_BLOCK_CACHE_INSTANCE != null) return GLOBAL_BLOCK_CACHE_INSTANCE;<a name="line.706"></a> +<span class="sourceLineNo">707</span> if (blockCacheDisabled) return null;<a name="line.707"></a> +<span class="sourceLineNo">708</span> LruBlockCache l1 = getL1Internal(conf);<a name="line.708"></a> +<span class="sourceLineNo">709</span> // blockCacheDisabled is set as a side-effect of getL1Internal(), so check it again after the call.<a name="line.709"></a> +<span class="sourceLineNo">710</span> if (blockCacheDisabled) return null;<a name="line.710"></a> +<span class="sourceLineNo">711</span> BlockCache l2 = getL2(conf);<a name="line.711"></a> +<span class="sourceLineNo">712</span> if (l2 == null) {<a name="line.712"></a> +<span class="sourceLineNo">713</span> GLOBAL_BLOCK_CACHE_INSTANCE = l1;<a name="line.713"></a> +<span class="sourceLineNo">714</span> } else {<a name="line.714"></a> +<span class="sourceLineNo">715</span> boolean useExternal = conf.getBoolean(EXTERNAL_BLOCKCACHE_KEY, EXTERNAL_BLOCKCACHE_DEFAULT);<a name="line.715"></a> +<span class="sourceLineNo">716</span> boolean combinedWithLru = conf.getBoolean(BUCKET_CACHE_COMBINED_KEY,<a name="line.716"></a> +<span class="sourceLineNo">717</span> DEFAULT_BUCKET_CACHE_COMBINED);<a name="line.717"></a> +<span class="sourceLineNo">718</span> if (useExternal) {<a name="line.718"></a> +<span class="sourceLineNo">719</span> GLOBAL_BLOCK_CACHE_INSTANCE = new InclusiveCombinedBlockCache(l1, l2);<a name="line.719"></a> +<span class="sourceLineNo">720</span> } else {<a name="line.720"></a> +<span class="sourceLineNo">721</span> if (combinedWithLru) {<a name="line.721"></a> +<span class="sourceLineNo">722</span> GLOBAL_BLOCK_CACHE_INSTANCE = new CombinedBlockCache(l1, l2);<a name="line.722"></a> +<span class="sourceLineNo">723</span> } else {<a name="line.723"></a> +<span class="sourceLineNo">724</span> // L1 and L2 are not 'combined'. They are connected via the LruBlockCache victimhandler<a name="line.724"></a> +<span class="sourceLineNo">725</span> // mechanism. It is a little ugly but works according to the following: when the<a name="line.725"></a> +<span class="sourceLineNo">726</span> // background eviction thread runs, blocks evicted from L1 will go to L2 AND when we get<a name="line.726"></a> +<span class="sourceLineNo">727</span> // a block from the L1 cache, if not in L1, we will search L2.<a name="line.727"></a> +<span class="sourceLineNo">728</span> GLOBAL_BLOCK_CACHE_INSTANCE = l1;<a name="line.728"></a> +<span class="sourceLineNo">729</span> }<a name="line.729"></a> +<span class="sourceLineNo">730</span> }<a name="line.730"></a> +<span class="sourceLineNo">731</span> l1.setVictimCache(l2);<a name="line.731"></a> +<span class="sourceLineNo">732</span> }<a name="line.732"></a> +<span class="sourceLineNo">733</span> return GLOBAL_BLOCK_CACHE_INSTANCE;<a name="line.733"></a> +<span class="sourceLineNo">734</span> }<a name="line.734"></a> +<span class="sourceLineNo">735</span><a name="line.735"></a> +<span class="sourceLineNo">736</span> // Supposed to use only from tests. Some tests want to reinit the Global block cache instance<a name="line.736"></a> +<span class="sourceLineNo">737</span> @VisibleForTesting<a name="line.737"></a> +<span class="sourceLineNo">738</span> static synchronized void clearGlobalInstances() {<a name="line.738"></a> +<span class="sourceLineNo">739</span> GLOBAL_L1_CACHE_INSTANCE = null;<a name="line.739"></a> +<span class="sourceLineNo">740</span> GLOBAL_BLOCK_CACHE_INSTANCE = null;<a name="line.740"></a> +<span class="sourceLineNo">741</span> }<a name="line.741"></a> +<span class="sourceLineNo">742</span>}<a name="line.742"></a>
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/e2f20c83/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/CacheConfig.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/CacheConfig.html b/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/CacheConfig.html index bf17b37..4af2d9a 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/CacheConfig.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/CacheConfig.html @@ -555,182 +555,199 @@ <span class="sourceLineNo">547</span> // Clear this if in tests you'd make more than one block cache instance.<a name="line.547"></a> <span class="sourceLineNo">548</span> @VisibleForTesting<a name="line.548"></a> <span class="sourceLineNo">549</span> static BlockCache GLOBAL_BLOCK_CACHE_INSTANCE;<a name="line.549"></a> -<span class="sourceLineNo">550</span> private static LruBlockCache GLOBAL_L1_CACHE_INSTANCE;<a name="line.550"></a> -<span class="sourceLineNo">551</span><a name="line.551"></a> -<span class="sourceLineNo">552</span> /** Boolean whether we have disabled the block cache entirely. */<a name="line.552"></a> -<span class="sourceLineNo">553</span> @VisibleForTesting<a name="line.553"></a> -<span class="sourceLineNo">554</span> static boolean blockCacheDisabled = false;<a name="line.554"></a> -<span class="sourceLineNo">555</span><a name="line.555"></a> -<span class="sourceLineNo">556</span> /**<a name="line.556"></a> -<span class="sourceLineNo">557</span> * @param c Configuration to use.<a name="line.557"></a> -<span class="sourceLineNo">558</span> * @return An L1 instance. Currently an instance of LruBlockCache.<a name="line.558"></a> -<span class="sourceLineNo">559</span> */<a name="line.559"></a> -<span class="sourceLineNo">560</span> public static LruBlockCache getL1(final Configuration c) {<a name="line.560"></a> -<span class="sourceLineNo">561</span> return getL1Internal(c);<a name="line.561"></a> -<span class="sourceLineNo">562</span> }<a name="line.562"></a> -<span class="sourceLineNo">563</span><a name="line.563"></a> -<span class="sourceLineNo">564</span> /**<a name="line.564"></a> -<span class="sourceLineNo">565</span> * @param c Configuration to use.<a name="line.565"></a> -<span class="sourceLineNo">566</span> * @return An L1 instance. Currently an instance of LruBlockCache.<a name="line.566"></a> -<span class="sourceLineNo">567</span> */<a name="line.567"></a> -<span class="sourceLineNo">568</span> private synchronized static LruBlockCache getL1Internal(final Configuration c) {<a name="line.568"></a> -<span class="sourceLineNo">569</span> if (GLOBAL_L1_CACHE_INSTANCE != null) return GLOBAL_L1_CACHE_INSTANCE;<a name="line.569"></a> -<span class="sourceLineNo">570</span> final long lruCacheSize = MemorySizeUtil.getLruCacheSize(c);<a name="line.570"></a> -<span class="sourceLineNo">571</span> if (lruCacheSize < 0) {<a name="line.571"></a> -<span class="sourceLineNo">572</span> blockCacheDisabled = true;<a name="line.572"></a> -<span class="sourceLineNo">573</span> }<a name="line.573"></a> -<span class="sourceLineNo">574</span> if (blockCacheDisabled) return null;<a name="line.574"></a> -<span class="sourceLineNo">575</span> int blockSize = c.getInt(BLOCKCACHE_BLOCKSIZE_KEY, HConstants.DEFAULT_BLOCKSIZE);<a name="line.575"></a> -<span class="sourceLineNo">576</span> LOG.info("Allocating LruBlockCache size=" +<a name="line.576"></a> -<span class="sourceLineNo">577</span> StringUtils.byteDesc(lruCacheSize) + ", blockSize=" + StringUtils.byteDesc(blockSize));<a name="line.577"></a> -<span class="sourceLineNo">578</span> GLOBAL_L1_CACHE_INSTANCE = new LruBlockCache(lruCacheSize, blockSize, true, c);<a name="line.578"></a> -<span class="sourceLineNo">579</span> return GLOBAL_L1_CACHE_INSTANCE;<a name="line.579"></a> -<span class="sourceLineNo">580</span> }<a name="line.580"></a> -<span class="sourceLineNo">581</span><a name="line.581"></a> -<span class="sourceLineNo">582</span> /**<a name="line.582"></a> -<span class="sourceLineNo">583</span> * @param c Configuration to use.<a name="line.583"></a> -<span class="sourceLineNo">584</span> * @return Returns L2 block cache instance (for now it is BucketCache BlockCache all the time)<a name="line.584"></a> -<span class="sourceLineNo">585</span> * or null if not supposed to be a L2.<a name="line.585"></a> -<span class="sourceLineNo">586</span> */<a name="line.586"></a> -<span class="sourceLineNo">587</span> @VisibleForTesting<a name="line.587"></a> -<span class="sourceLineNo">588</span> static BlockCache getL2(final Configuration c) {<a name="line.588"></a> -<span class="sourceLineNo">589</span> final boolean useExternal = c.getBoolean(EXTERNAL_BLOCKCACHE_KEY, EXTERNAL_BLOCKCACHE_DEFAULT);<a name="line.589"></a> -<span class="sourceLineNo">590</span> if (LOG.isDebugEnabled()) {<a name="line.590"></a> -<span class="sourceLineNo">591</span> LOG.debug("Trying to use " + (useExternal?" External":" Internal") + " l2 cache");<a name="line.591"></a> -<span class="sourceLineNo">592</span> }<a name="line.592"></a> -<span class="sourceLineNo">593</span><a name="line.593"></a> -<span class="sourceLineNo">594</span> // If we want to use an external block cache then create that.<a name="line.594"></a> -<span class="sourceLineNo">595</span> if (useExternal) {<a name="line.595"></a> -<span class="sourceLineNo">596</span> return getExternalBlockcache(c);<a name="line.596"></a> -<span class="sourceLineNo">597</span> }<a name="line.597"></a> -<span class="sourceLineNo">598</span> // otherwise use the bucket cache.<a name="line.598"></a> -<span class="sourceLineNo">599</span> return getBucketCache(c);<a name="line.599"></a> -<span class="sourceLineNo">600</span> }<a name="line.600"></a> -<span class="sourceLineNo">601</span><a name="line.601"></a> -<span class="sourceLineNo">602</span> private static BlockCache getExternalBlockcache(Configuration c) {<a name="line.602"></a> -<span class="sourceLineNo">603</span> Class klass = null;<a name="line.603"></a> -<span class="sourceLineNo">604</span><a name="line.604"></a> -<span class="sourceLineNo">605</span> // Get the class, from the config. s<a name="line.605"></a> -<span class="sourceLineNo">606</span> try {<a name="line.606"></a> -<span class="sourceLineNo">607</span> klass = ExternalBlockCaches.valueOf(c.get(EXTERNAL_BLOCKCACHE_CLASS_KEY, "memcache")).clazz;<a name="line.607"></a> -<span class="sourceLineNo">608</span> } catch (IllegalArgumentException exception) {<a name="line.608"></a> -<span class="sourceLineNo">609</span> try {<a name="line.609"></a> -<span class="sourceLineNo">610</span> klass = c.getClass(EXTERNAL_BLOCKCACHE_CLASS_KEY, Class.forName(<a name="line.610"></a> -<span class="sourceLineNo">611</span> "org.apache.hadoop.hbase.io.hfile.MemcachedBlockCache"));<a name="line.611"></a> -<span class="sourceLineNo">612</span> } catch (ClassNotFoundException e) {<a name="line.612"></a> -<span class="sourceLineNo">613</span> return null;<a name="line.613"></a> -<span class="sourceLineNo">614</span> }<a name="line.614"></a> +<span class="sourceLineNo">550</span> private static LruBlockCache GLOBAL_L1_CACHE_INSTANCE = null;<a name="line.550"></a> +<span class="sourceLineNo">551</span> private static BlockCache GLOBAL_L2_CACHE_INSTANCE = null;<a name="line.551"></a> +<span class="sourceLineNo">552</span><a name="line.552"></a> +<span class="sourceLineNo">553</span> /** Boolean whether we have disabled the block cache entirely. */<a name="line.553"></a> +<span class="sourceLineNo">554</span> @VisibleForTesting<a name="line.554"></a> +<span class="sourceLineNo">555</span> static boolean blockCacheDisabled = false;<a name="line.555"></a> +<span class="sourceLineNo">556</span><a name="line.556"></a> +<span class="sourceLineNo">557</span> /**<a name="line.557"></a> +<span class="sourceLineNo">558</span> * @param c Configuration to use.<a name="line.558"></a> +<span class="sourceLineNo">559</span> * @return An L1 instance. Currently an instance of LruBlockCache.<a name="line.559"></a> +<span class="sourceLineNo">560</span> */<a name="line.560"></a> +<span class="sourceLineNo">561</span> public static LruBlockCache getL1(final Configuration c) {<a name="line.561"></a> +<span class="sourceLineNo">562</span> return getL1Internal(c);<a name="line.562"></a> +<span class="sourceLineNo">563</span> }<a name="line.563"></a> +<span class="sourceLineNo">564</span><a name="line.564"></a> +<span class="sourceLineNo">565</span> public CacheStats getL1Stats() {<a name="line.565"></a> +<span class="sourceLineNo">566</span> if (GLOBAL_L1_CACHE_INSTANCE != null) {<a name="line.566"></a> +<span class="sourceLineNo">567</span> return GLOBAL_L1_CACHE_INSTANCE.getStats();<a name="line.567"></a> +<span class="sourceLineNo">568</span> }<a name="line.568"></a> +<span class="sourceLineNo">569</span> return null;<a name="line.569"></a> +<span class="sourceLineNo">570</span> }<a name="line.570"></a> +<span class="sourceLineNo">571</span><a name="line.571"></a> +<span class="sourceLineNo">572</span> public CacheStats getL2Stats() {<a name="line.572"></a> +<span class="sourceLineNo">573</span> if (GLOBAL_L2_CACHE_INSTANCE != null) {<a name="line.573"></a> +<span class="sourceLineNo">574</span> return GLOBAL_L2_CACHE_INSTANCE.getStats();<a name="line.574"></a> +<span class="sourceLineNo">575</span> }<a name="line.575"></a> +<span class="sourceLineNo">576</span> return null;<a name="line.576"></a> +<span class="sourceLineNo">577</span> }<a name="line.577"></a> +<span class="sourceLineNo">578</span><a name="line.578"></a> +<span class="sourceLineNo">579</span> /**<a name="line.579"></a> +<span class="sourceLineNo">580</span> * @param c Configuration to use.<a name="line.580"></a> +<span class="sourceLineNo">581</span> * @return An L1 instance. Currently an instance of LruBlockCache.<a name="line.581"></a> +<span class="sourceLineNo">582</span> */<a name="line.582"></a> +<span class="sourceLineNo">583</span> private synchronized static LruBlockCache getL1Internal(final Configuration c) {<a name="line.583"></a> +<span class="sourceLineNo">584</span> if (GLOBAL_L1_CACHE_INSTANCE != null) return GLOBAL_L1_CACHE_INSTANCE;<a name="line.584"></a> +<span class="sourceLineNo">585</span> final long lruCacheSize = MemorySizeUtil.getLruCacheSize(c);<a name="line.585"></a> +<span class="sourceLineNo">586</span> if (lruCacheSize < 0) {<a name="line.586"></a> +<span class="sourceLineNo">587</span> blockCacheDisabled = true;<a name="line.587"></a> +<span class="sourceLineNo">588</span> }<a name="line.588"></a> +<span class="sourceLineNo">589</span> if (blockCacheDisabled) return null;<a name="line.589"></a> +<span class="sourceLineNo">590</span> int blockSize = c.getInt(BLOCKCACHE_BLOCKSIZE_KEY, HConstants.DEFAULT_BLOCKSIZE);<a name="line.590"></a> +<span class="sourceLineNo">591</span> LOG.info("Allocating LruBlockCache size=" +<a name="line.591"></a> +<span class="sourceLineNo">592</span> StringUtils.byteDesc(lruCacheSize) + ", blockSize=" + StringUtils.byteDesc(blockSize));<a name="line.592"></a> +<span class="sourceLineNo">593</span> GLOBAL_L1_CACHE_INSTANCE = new LruBlockCache(lruCacheSize, blockSize, true, c);<a name="line.593"></a> +<span class="sourceLineNo">594</span> return GLOBAL_L1_CACHE_INSTANCE;<a name="line.594"></a> +<span class="sourceLineNo">595</span> }<a name="line.595"></a> +<span class="sourceLineNo">596</span><a name="line.596"></a> +<span class="sourceLineNo">597</span> /**<a name="line.597"></a> +<span class="sourceLineNo">598</span> * @param c Configuration to use.<a name="line.598"></a> +<span class="sourceLineNo">599</span> * @return Returns L2 block cache instance (for now it is BucketCache BlockCache all the time)<a name="line.599"></a> +<span class="sourceLineNo">600</span> * or null if not supposed to be a L2.<a name="line.600"></a> +<span class="sourceLineNo">601</span> */<a name="line.601"></a> +<span class="sourceLineNo">602</span> @VisibleForTesting<a name="line.602"></a> +<span class="sourceLineNo">603</span> static BlockCache getL2(final Configuration c) {<a name="line.603"></a> +<span class="sourceLineNo">604</span> final boolean useExternal = c.getBoolean(EXTERNAL_BLOCKCACHE_KEY, EXTERNAL_BLOCKCACHE_DEFAULT);<a name="line.604"></a> +<span class="sourceLineNo">605</span> if (LOG.isDebugEnabled()) {<a name="line.605"></a> +<span class="sourceLineNo">606</span> LOG.debug("Trying to use " + (useExternal?" External":" Internal") + " l2 cache");<a name="line.606"></a> +<span class="sourceLineNo">607</span> }<a name="line.607"></a> +<span class="sourceLineNo">608</span><a name="line.608"></a> +<span class="sourceLineNo">609</span> // If we want to use an external block cache then create that.<a name="line.609"></a> +<span class="sourceLineNo">610</span> if (useExternal) {<a name="line.610"></a> +<span class="sourceLineNo">611</span> GLOBAL_L2_CACHE_INSTANCE = getExternalBlockcache(c);<a name="line.611"></a> +<span class="sourceLineNo">612</span> } else {<a name="line.612"></a> +<span class="sourceLineNo">613</span> // otherwise use the bucket cache.<a name="line.613"></a> +<span class="sourceLineNo">614</span> GLOBAL_L2_CACHE_INSTANCE = getBucketCache(c);<a name="line.614"></a> <span class="sourceLineNo">615</span> }<a name="line.615"></a> -<span class="sourceLineNo">616</span><a name="line.616"></a> -<span class="sourceLineNo">617</span> // Now try and create an instance of the block cache.<a name="line.617"></a> -<span class="sourceLineNo">618</span> try {<a name="line.618"></a> -<span class="sourceLineNo">619</span> LOG.info("Creating external block cache of type: " + klass);<a name="line.619"></a> -<span class="sourceLineNo">620</span> return (BlockCache) ReflectionUtils.newInstance(klass, c);<a name="line.620"></a> -<span class="sourceLineNo">621</span> } catch (Exception e) {<a name="line.621"></a> -<span class="sourceLineNo">622</span> LOG.warn("Error creating external block cache", e);<a name="line.622"></a> -<span class="sourceLineNo">623</span> }<a name="line.623"></a> -<span class="sourceLineNo">624</span> return null;<a name="line.624"></a> -<span class="sourceLineNo">625</span><a name="line.625"></a> -<span class="sourceLineNo">626</span> }<a name="line.626"></a> -<span class="sourceLineNo">627</span><a name="line.627"></a> -<span class="sourceLineNo">628</span> private static BlockCache getBucketCache(Configuration c) {<a name="line.628"></a> -<span class="sourceLineNo">629</span> // Check for L2. ioengine name must be non-null.<a name="line.629"></a> -<span class="sourceLineNo">630</span> String bucketCacheIOEngineName = c.get(BUCKET_CACHE_IOENGINE_KEY, null);<a name="line.630"></a> -<span class="sourceLineNo">631</span> if (bucketCacheIOEngineName == null || bucketCacheIOEngineName.length() <= 0) return null;<a name="line.631"></a> -<span class="sourceLineNo">632</span><a name="line.632"></a> -<span class="sourceLineNo">633</span> int blockSize = c.getInt(BLOCKCACHE_BLOCKSIZE_KEY, HConstants.DEFAULT_BLOCKSIZE);<a name="line.633"></a> -<span class="sourceLineNo">634</span> final long bucketCacheSize = MemorySizeUtil.getBucketCacheSize(c);<a name="line.634"></a> -<span class="sourceLineNo">635</span> if (bucketCacheSize <= 0) {<a name="line.635"></a> -<span class="sourceLineNo">636</span> throw new IllegalStateException("bucketCacheSize <= 0; Check " +<a name="line.636"></a> -<span class="sourceLineNo">637</span> BUCKET_CACHE_SIZE_KEY + " setting and/or server java heap size");<a name="line.637"></a> -<span class="sourceLineNo">638</span> }<a name="line.638"></a> -<span class="sourceLineNo">639</span> if (c.get("hbase.bucketcache.percentage.in.combinedcache") != null) {<a name="line.639"></a> -<span class="sourceLineNo">640</span> LOG.warn("Configuration 'hbase.bucketcache.percentage.in.combinedcache' is no longer "<a name="line.640"></a> -<span class="sourceLineNo">641</span> + "respected. See comments in http://hbase.apache.org/book.html#_changes_of_note";);<a name="line.641"></a> -<span class="sourceLineNo">642</span> }<a name="line.642"></a> -<span class="sourceLineNo">643</span> int writerThreads = c.getInt(BUCKET_CACHE_WRITER_THREADS_KEY,<a name="line.643"></a> -<span class="sourceLineNo">644</span> DEFAULT_BUCKET_CACHE_WRITER_THREADS);<a name="line.644"></a> -<span class="sourceLineNo">645</span> int writerQueueLen = c.getInt(BUCKET_CACHE_WRITER_QUEUE_KEY,<a name="line.645"></a> -<span class="sourceLineNo">646</span> DEFAULT_BUCKET_CACHE_WRITER_QUEUE);<a name="line.646"></a> -<span class="sourceLineNo">647</span> String persistentPath = c.get(BUCKET_CACHE_PERSISTENT_PATH_KEY);<a name="line.647"></a> -<span class="sourceLineNo">648</span> String[] configuredBucketSizes = c.getStrings(BUCKET_CACHE_BUCKETS_KEY);<a name="line.648"></a> -<span class="sourceLineNo">649</span> int [] bucketSizes = null;<a name="line.649"></a> -<span class="sourceLineNo">650</span> if (configuredBucketSizes != null) {<a name="line.650"></a> -<span class="sourceLineNo">651</span> bucketSizes = new int[configuredBucketSizes.length];<a name="line.651"></a> -<span class="sourceLineNo">652</span> for (int i = 0; i < configuredBucketSizes.length; i++) {<a name="line.652"></a> -<span class="sourceLineNo">653</span> int bucketSize = Integer.parseInt(configuredBucketSizes[i].trim());<a name="line.653"></a> -<span class="sourceLineNo">654</span> if (bucketSize % 256 != 0) {<a name="line.654"></a> -<span class="sourceLineNo">655</span> // We need all the bucket sizes to be multiples of 256. 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All bucket sizes to be multiples of 256");<a name="line.661"></a> -<span class="sourceLineNo">662</span> }<a name="line.662"></a> -<span class="sourceLineNo">663</span> bucketSizes[i] = bucketSize;<a name="line.663"></a> -<span class="sourceLineNo">664</span> }<a name="line.664"></a> -<span class="sourceLineNo">665</span> }<a name="line.665"></a> -<span class="sourceLineNo">666</span> BucketCache bucketCache = null;<a name="line.666"></a> -<span class="sourceLineNo">667</span> try {<a name="line.667"></a> -<span class="sourceLineNo">668</span> int ioErrorsTolerationDuration = c.getInt(<a name="line.668"></a> -<span class="sourceLineNo">669</span> "hbase.bucketcache.ioengine.errors.tolerated.duration",<a name="line.669"></a> -<span class="sourceLineNo">670</span> BucketCache.DEFAULT_ERROR_TOLERATION_DURATION);<a name="line.670"></a> -<span class="sourceLineNo">671</span> // Bucket cache logs its stats on creation internal to the constructor.<a name="line.671"></a> -<span class="sourceLineNo">672</span> bucketCache = new BucketCache(bucketCacheIOEngineName,<a name="line.672"></a> -<span class="sourceLineNo">673</span> bucketCacheSize, blockSize, bucketSizes, writerThreads, writerQueueLen, persistentPath,<a name="line.673"></a> -<span class="sourceLineNo">674</span> ioErrorsTolerationDuration, c);<a name="line.674"></a> -<span class="sourceLineNo">675</span> } catch (IOException ioex) {<a name="line.675"></a> -<span class="sourceLineNo">676</span> LOG.error("Can't instantiate bucket cache", ioex); throw new RuntimeException(ioex);<a name="line.676"></a> -<span class="sourceLineNo">677</span> }<a name="line.677"></a> -<span class="sourceLineNo">678</span> return bucketCache;<a name="line.678"></a> -<span class="sourceLineNo">679</span> }<a name="line.679"></a> -<span class="sourceLineNo">680</span><a name="line.680"></a> -<span class="sourceLineNo">681</span> /**<a name="line.681"></a> -<span class="sourceLineNo">682</span> * Returns the block cache or <code>null</code> in case none should be used.<a name="line.682"></a> -<span class="sourceLineNo">683</span> * Sets GLOBAL_BLOCK_CACHE_INSTANCE<a name="line.683"></a> -<span class="sourceLineNo">684</span> *<a name="line.684"></a> -<span class="sourceLineNo">685</span> * @param conf The current configuration.<a name="line.685"></a> -<span class="sourceLineNo">686</span> * @return The block cache or <code>null</code>.<a name="line.686"></a> -<span class="sourceLineNo">687</span> */<a name="line.687"></a> -<span class="sourceLineNo">688</span> public static synchronized BlockCache instantiateBlockCache(Configuration conf) {<a name="line.688"></a> -<span class="sourceLineNo">689</span> if (GLOBAL_BLOCK_CACHE_INSTANCE != null) return GLOBAL_BLOCK_CACHE_INSTANCE;<a name="line.689"></a> -<span class="sourceLineNo">690</span> if (blockCacheDisabled) return null;<a name="line.690"></a> -<span class="sourceLineNo">691</span> LruBlockCache l1 = getL1Internal(conf);<a name="line.691"></a> -<span class="sourceLineNo">692</span> // blockCacheDisabled is set as a side-effect of getL1Internal(), so check it again after the call.<a name="line.692"></a> -<span class="sourceLineNo">693</span> if (blockCacheDisabled) return null;<a name="line.693"></a> -<span class="sourceLineNo">694</span> BlockCache l2 = getL2(conf);<a name="line.694"></a> -<span class="sourceLineNo">695</span> if (l2 == null) {<a name="line.695"></a> -<span class="sourceLineNo">696</span> GLOBAL_BLOCK_CACHE_INSTANCE = l1;<a name="line.696"></a> -<span class="sourceLineNo">697</span> } else {<a name="line.697"></a> -<span class="sourceLineNo">698</span> boolean useExternal = conf.getBoolean(EXTERNAL_BLOCKCACHE_KEY, EXTERNAL_BLOCKCACHE_DEFAULT);<a name="line.698"></a> -<span class="sourceLineNo">699</span> boolean combinedWithLru = conf.getBoolean(BUCKET_CACHE_COMBINED_KEY,<a name="line.699"></a> -<span class="sourceLineNo">700</span> DEFAULT_BUCKET_CACHE_COMBINED);<a name="line.700"></a> -<span class="sourceLineNo">701</span> if (useExternal) {<a name="line.701"></a> -<span class="sourceLineNo">702</span> GLOBAL_BLOCK_CACHE_INSTANCE = new InclusiveCombinedBlockCache(l1, l2);<a name="line.702"></a> -<span class="sourceLineNo">703</span> } else {<a name="line.703"></a> -<span class="sourceLineNo">704</span> if (combinedWithLru) {<a name="line.704"></a> -<span class="sourceLineNo">705</span> GLOBAL_BLOCK_CACHE_INSTANCE = new CombinedBlockCache(l1, l2);<a name="line.705"></a> -<span class="sourceLineNo">706</span> } else {<a name="line.706"></a> -<span class="sourceLineNo">707</span> // L1 and L2 are not 'combined'. They are connected via the LruBlockCache victimhandler<a name="line.707"></a> -<span class="sourceLineNo">708</span> // mechanism. It is a little ugly but works according to the following: when the<a name="line.708"></a> -<span class="sourceLineNo">709</span> // background eviction thread runs, blocks evicted from L1 will go to L2 AND when we get<a name="line.709"></a> -<span class="sourceLineNo">710</span> // a block from the L1 cache, if not in L1, we will search L2.<a name="line.710"></a> -<span class="sourceLineNo">711</span> GLOBAL_BLOCK_CACHE_INSTANCE = l1;<a name="line.711"></a> -<span class="sourceLineNo">712</span> }<a name="line.712"></a> -<span class="sourceLineNo">713</span> }<a name="line.713"></a> -<span class="sourceLineNo">714</span> l1.setVictimCache(l2);<a name="line.714"></a> -<span class="sourceLineNo">715</span> }<a name="line.715"></a> -<span class="sourceLineNo">716</span> return GLOBAL_BLOCK_CACHE_INSTANCE;<a name="line.716"></a> -<span class="sourceLineNo">717</span> }<a name="line.717"></a> -<span class="sourceLineNo">718</span><a name="line.718"></a> -<span class="sourceLineNo">719</span> // Supposed to use only from tests. Some tests want to reinit the Global block cache instance<a name="line.719"></a> -<span class="sourceLineNo">720</span> @VisibleForTesting<a name="line.720"></a> -<span class="sourceLineNo">721</span> static synchronized void clearGlobalInstances() {<a name="line.721"></a> -<span class="sourceLineNo">722</span> GLOBAL_L1_CACHE_INSTANCE = null;<a name="line.722"></a> -<span class="sourceLineNo">723</span> GLOBAL_BLOCK_CACHE_INSTANCE = null;<a name="line.723"></a> -<span class="sourceLineNo">724</span> }<a name="line.724"></a> -<span class="sourceLineNo">725</span>}<a name="line.725"></a> +<span class="sourceLineNo">616</span> return GLOBAL_L2_CACHE_INSTANCE;<a name="line.616"></a> +<span class="sourceLineNo">617</span> }<a name="line.617"></a> +<span class="sourceLineNo">618</span><a name="line.618"></a> +<span class="sourceLineNo">619</span> private static BlockCache getExternalBlockcache(Configuration c) {<a name="line.619"></a> +<span class="sourceLineNo">620</span> Class klass = null;<a name="line.620"></a> +<span class="sourceLineNo">621</span><a name="line.621"></a> +<span class="sourceLineNo">622</span> // Get the class, from the config. s<a name="line.622"></a> +<span class="sourceLineNo">623</span> try {<a name="line.623"></a> +<span class="sourceLineNo">624</span> klass = ExternalBlockCaches.valueOf(c.get(EXTERNAL_BLOCKCACHE_CLASS_KEY, "memcache")).clazz;<a name="line.624"></a> +<span class="sourceLineNo">625</span> } catch (IllegalArgumentException exception) {<a name="line.625"></a> +<span class="sourceLineNo">626</span> try {<a name="line.626"></a> +<span class="sourceLineNo">627</span> klass = c.getClass(EXTERNAL_BLOCKCACHE_CLASS_KEY, Class.forName(<a name="line.627"></a> +<span class="sourceLineNo">628</span> "org.apache.hadoop.hbase.io.hfile.MemcachedBlockCache"));<a name="line.628"></a> +<span class="sourceLineNo">629</span> } catch (ClassNotFoundException e) {<a name="line.629"></a> +<span class="sourceLineNo">630</span> return null;<a name="line.630"></a> +<span class="sourceLineNo">631</span> }<a name="line.631"></a> +<span class="sourceLineNo">632</span> }<a name="line.632"></a> +<span class="sourceLineNo">633</span><a name="line.633"></a> +<span class="sourceLineNo">634</span> // Now try and create an instance of the block cache.<a name="line.634"></a> +<span class="sourceLineNo">635</span> try {<a name="line.635"></a> +<span class="sourceLineNo">636</span> LOG.info("Creating external block cache of type: " + klass);<a name="line.636"></a> +<span class="sourceLineNo">637</span> return (BlockCache) ReflectionUtils.newInstance(klass, c);<a name="line.637"></a> +<span class="sourceLineNo">638</span> } catch (Exception e) {<a name="line.638"></a> +<span class="sourceLineNo">639</span> LOG.warn("Error creating external block cache", e);<a name="line.639"></a> +<span class="sourceLineNo">640</span> }<a name="line.640"></a> +<span class="sourceLineNo">641</span> return null;<a name="line.641"></a> +<span class="sourceLineNo">642</span><a name="line.642"></a> +<span class="sourceLineNo">643</span> }<a name="line.643"></a> +<span class="sourceLineNo">644</span><a name="line.644"></a> +<span class="sourceLineNo">645</span> private static BlockCache getBucketCache(Configuration c) {<a name="line.645"></a> +<span class="sourceLineNo">646</span> // Check for L2. ioengine name must be non-null.<a name="line.646"></a> +<span class="sourceLineNo">647</span> String bucketCacheIOEngineName = c.get(BUCKET_CACHE_IOENGINE_KEY, null);<a name="line.647"></a> +<span class="sourceLineNo">648</span> if (bucketCacheIOEngineName == null || bucketCacheIOEngineName.length() <= 0) return null;<a name="line.648"></a> +<span class="sourceLineNo">649</span><a name="line.649"></a> +<span class="sourceLineNo">650</span> int blockSize = c.getInt(BLOCKCACHE_BLOCKSIZE_KEY, HConstants.DEFAULT_BLOCKSIZE);<a name="line.650"></a> +<span class="sourceLineNo">651</span> final long bucketCacheSize = MemorySizeUtil.getBucketCacheSize(c);<a name="line.651"></a> +<span class="sourceLineNo">652</span> if (bucketCacheSize <= 0) {<a name="line.652"></a> +<span class="sourceLineNo">653</span> throw new IllegalStateException("bucketCacheSize <= 0; Check " +<a name="line.653"></a> +<span class="sourceLineNo">654</span> BUCKET_CACHE_SIZE_KEY + " setting and/or server java heap size");<a name="line.654"></a> +<span class="sourceLineNo">655</span> }<a name="line.655"></a> +<span class="sourceLineNo">656</span> if (c.get("hbase.bucketcache.percentage.in.combinedcache") != null) {<a name="line.656"></a> +<span class="sourceLineNo">657</span> LOG.warn("Configuration 'hbase.bucketcache.percentage.in.combinedcache' is no longer "<a name="line.657"></a> +<span class="sourceLineNo">658</span> + "respected. See comments in http://hbase.apache.org/book.html#_changes_of_note";);<a name="line.658"></a> +<span class="sourceLineNo">659</span> }<a name="line.659"></a> +<span class="sourceLineNo">660</span> int writerThreads = c.getInt(BUCKET_CACHE_WRITER_THREADS_KEY,<a name="line.660"></a> +<span class="sourceLineNo">661</span> DEFAULT_BUCKET_CACHE_WRITER_THREADS);<a name="line.661"></a> +<span class="sourceLineNo">662</span> int writerQueueLen = c.getInt(BUCKET_CACHE_WRITER_QUEUE_KEY,<a name="line.662"></a> +<span class="sourceLineNo">663</span> DEFAULT_BUCKET_CACHE_WRITER_QUEUE);<a name="line.663"></a> +<span class="sourceLineNo">664</span> String persistentPath = c.get(BUCKET_CACHE_PERSISTENT_PATH_KEY);<a name="line.664"></a> +<span class="sourceLineNo">665</span> String[] configuredBucketSizes = c.getStrings(BUCKET_CACHE_BUCKETS_KEY);<a name="line.665"></a> +<span class="sourceLineNo">666</span> int [] bucketSizes = null;<a name="line.666"></a> +<span class="sourceLineNo">667</span> if (configuredBucketSizes != null) {<a name="line.667"></a> +<span class="sourceLineNo">668</span> bucketSizes = new int[configuredBucketSizes.length];<a name="line.668"></a> +<span class="sourceLineNo">669</span> for (int i = 0; i < configuredBucketSizes.length; i++) {<a name="line.669"></a> +<span class="sourceLineNo">670</span> int bucketSize = Integer.parseInt(configuredBucketSizes[i].trim());<a name="line.670"></a> +<span class="sourceLineNo">671</span> if (bucketSize % 256 != 0) {<a name="line.671"></a> +<span class="sourceLineNo">672</span> // We need all the bucket sizes to be multiples of 256. Having all the configured bucket<a name="line.672"></a> +<span class="sourceLineNo">673</span> // sizes to be multiples of 256 will ensure that the block offsets within buckets,<a name="line.673"></a> +<span class="sourceLineNo">674</span> // that are calculated, will also be multiples of 256.<a name="line.674"></a> +<span class="sourceLineNo">675</span> // See BucketEntry where offset to each block is represented using 5 bytes (instead of 8<a name="line.675"></a> +<span class="sourceLineNo">676</span> // bytes long). We would like to save heap overhead as less as possible.<a name="line.676"></a> +<span class="sourceLineNo">677</span> throw new IllegalArgumentException("Illegal value: " + bucketSize + " configured for '"<a name="line.677"></a> +<span class="sourceLineNo">678</span> + BUCKET_CACHE_BUCKETS_KEY + "'. All bucket sizes to be multiples of 256");<a name="line.678"></a> +<span class="sourceLineNo">679</span> }<a name="line.679"></a> +<span class="sourceLineNo">680</span> bucketSizes[i] = bucketSize;<a name="line.680"></a> +<span class="sourceLineNo">681</span> }<a name="line.681"></a> +<span class="sourceLineNo">682</span> }<a name="line.682"></a> +<span class="sourceLineNo">683</span> BucketCache bucketCache = null;<a name="line.683"></a> +<span class="sourceLineNo">684</span> try {<a name="line.684"></a> +<span class="sourceLineNo">685</span> int ioErrorsTolerationDuration = c.getInt(<a name="line.685"></a> +<span class="sourceLineNo">686</span> "hbase.bucketcache.ioengine.errors.tolerated.duration",<a name="line.686"></a> +<span class="sourceLineNo">687</span> BucketCache.DEFAULT_ERROR_TOLERATION_DURATION);<a name="line.687"></a> +<span class="sourceLineNo">688</span> // Bucket cache logs its stats on creation internal to the constructor.<a name="line.688"></a> +<span class="sourceLineNo">689</span> bucketCache = new BucketCache(bucketCacheIOEngineName,<a name="line.689"></a> +<span class="sourceLineNo">690</span> bucketCacheSize, blockSize, bucketSizes, writerThreads, writerQueueLen, persistentPath,<a name="line.690"></a> +<span class="sourceLineNo">691</span> ioErrorsTolerationDuration, c);<a name="line.691"></a> +<span class="sourceLineNo">692</span> } catch (IOException ioex) {<a name="line.692"></a> +<span class="sourceLineNo">693</span> LOG.error("Can't instantiate bucket cache", ioex); throw new RuntimeException(ioex);<a name="line.693"></a> +<span class="sourceLineNo">694</span> }<a name="line.694"></a> +<span class="sourceLineNo">695</span> return bucketCache;<a name="line.695"></a> +<span class="sourceLineNo">696</span> }<a name="line.696"></a> +<span class="sourceLineNo">697</span><a name="line.697"></a> +<span class="sourceLineNo">698</span> /**<a name="line.698"></a> +<span class="sourceLineNo">699</span> * Returns the block cache or <code>null</code> in case none should be used.<a name="line.699"></a> +<span class="sourceLineNo">700</span> * Sets GLOBAL_BLOCK_CACHE_INSTANCE<a name="line.700"></a> +<span class="sourceLineNo">701</span> *<a name="line.701"></a> +<span class="sourceLineNo">702</span> * @param conf The current configuration.<a name="line.702"></a> +<span class="sourceLineNo">703</span> * @return The block cache or <code>null</code>.<a name="line.703"></a> +<span class="sourceLineNo">704</span> */<a name="line.704"></a> +<span class="sourceLineNo">705</span> public static synchronized BlockCache instantiateBlockCache(Configuration conf) {<a name="line.705"></a> +<span class="sourceLineNo">706</span> if (GLOBAL_BLOCK_CACHE_INSTANCE != null) return GLOBAL_BLOCK_CACHE_INSTANCE;<a name="line.706"></a> +<span class="sourceLineNo">707</span> if (blockCacheDisabled) return null;<a name="line.707"></a> +<span class="sourceLineNo">708</span> LruBlockCache l1 = getL1Internal(conf);<a name="line.708"></a> +<span class="sourceLineNo">709</span> // blockCacheDisabled is set as a side-effect of getL1Internal(), so check it again after the call.<a name="line.709"></a> +<span class="sourceLineNo">710</span> if (blockCacheDisabled) return null;<a name="line.710"></a> +<span class="sourceLineNo">711</span> BlockCache l2 = getL2(conf);<a name="line.711"></a> +<span class="sourceLineNo">712</span> if (l2 == null) {<a name="line.712"></a> +<span class="sourceLineNo">713</span> GLOBAL_BLOCK_CACHE_INSTANCE = l1;<a name="line.713"></a> +<span class="sourceLineNo">714</span> } else {<a name="line.714"></a> +<span class="sourceLineNo">715</span> boolean useExternal = conf.getBoolean(EXTERNAL_BLOCKCACHE_KEY, EXTERNAL_BLOCKCACHE_DEFAULT);<a name="line.715"></a> +<span class="sourceLineNo">716</span> boolean combinedWithLru = conf.getBoolean(BUCKET_CACHE_COMBINED_KEY,<a name="line.716"></a> +<span class="sourceLineNo">717</span> DEFAULT_BUCKET_CACHE_COMBINED);<a name="line.717"></a> +<span class="sourceLineNo">718</span> if (useExternal) {<a name="line.718"></a> +<span class="sourceLineNo">719</span> GLOBAL_BLOCK_CACHE_INSTANCE = new InclusiveCombinedBlockCache(l1, l2);<a name="line.719"></a> +<span class="sourceLineNo">720</span> } else {<a name="line.720"></a> +<span class="sourceLineNo">721</span> if (combinedWithLru) {<a name="line.721"></a> +<span class="sourceLineNo">722</span> GLOBAL_BLOCK_CACHE_INSTANCE = new CombinedBlockCache(l1, l2);<a name="line.722"></a> +<span class="sourceLineNo">723</span> } else {<a name="line.723"></a> +<span class="sourceLineNo">724</span> // L1 and L2 are not 'combined'. They are connected via the LruBlockCache victimhandler<a name="line.724"></a> +<span class="sourceLineNo">725</span> // mechanism. It is a little ugly but works according to the following: when the<a name="line.725"></a> +<span class="sourceLineNo">726</span> // background eviction thread runs, blocks evicted from L1 will go to L2 AND when we get<a name="line.726"></a> +<span class="sourceLineNo">727</span> // a block from the L1 cache, if not in L1, we will search L2.<a name="line.727"></a> +<span class="sourceLineNo">728</span> GLOBAL_BLOCK_CACHE_INSTANCE = l1;<a name="line.728"></a> +<span class="sourceLineNo">729</span> }<a name="line.729"></a> +<span class="sourceLineNo">730</span> }<a name="line.730"></a> +<span class="sourceLineNo">731</span> l1.setVictimCache(l2);<a name="line.731"></a> +<span class="sourceLineNo">732</span> }<a name="line.732"></a> +<span class="sourceLineNo">733</span> return GLOBAL_BLOCK_CACHE_INSTANCE;<a name="line.733"></a> +<span class="sourceLineNo">734</span> }<a name="line.734"></a> +<span class="sourceLineNo">735</span><a name="line.735"></a> +<span class="sourceLineNo">736</span> // Supposed to use only from tests. Some tests want to reinit the Global block cache instance<a name="line.736"></a> +<span class="sourceLineNo">737</span> @VisibleForTesting<a name="line.737"></a> +<span class="sourceLineNo">738</span> static synchronized void clearGlobalInstances() {<a name="line.738"></a> +<span class="sourceLineNo">739</span> GLOBAL_L1_CACHE_INSTANCE = null;<a name="line.739"></a> +<span class="sourceLineNo">740</span> GLOBAL_BLOCK_CACHE_INSTANCE = null;<a name="line.740"></a> +<span class="sourceLineNo">741</span> }<a name="line.741"></a> +<span class="sourceLineNo">742</span>}<a name="line.742"></a>
