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throw new RuntimeException(ioex);<a name="line.667"></a> -<span class="sourceLineNo">668</span> }<a name="line.668"></a> -<span class="sourceLineNo">669</span> return bucketCache;<a name="line.669"></a> -<span class="sourceLineNo">670</span> }<a name="line.670"></a> -<span class="sourceLineNo">671</span><a name="line.671"></a> -<span class="sourceLineNo">672</span> /**<a name="line.672"></a> -<span class="sourceLineNo">673</span> * Returns the block cache or <code>null</code> in case none should be used.<a name="line.673"></a> -<span class="sourceLineNo">674</span> * Sets GLOBAL_BLOCK_CACHE_INSTANCE<a name="line.674"></a> -<span class="sourceLineNo">675</span> *<a name="line.675"></a> -<span class="sourceLineNo">676</span> * @param conf The current configuration.<a name="line.676"></a> -<span class="sourceLineNo">677</span> * @return The block cache or <code>null</code>.<a name="line.677"></a> -<span class="sourceLineNo">678</span> */<a name="line.678"></a> -<span class="sourceLineNo">679</span> public static synchronized BlockCache instantiateBlockCache(Configuration conf) {<a name="line.679"></a> -<span class="sourceLineNo">680</span> if (GLOBAL_BLOCK_CACHE_INSTANCE != null) return GLOBAL_BLOCK_CACHE_INSTANCE;<a name="line.680"></a> -<span class="sourceLineNo">681</span> if (blockCacheDisabled) return null;<a name="line.681"></a> -<span class="sourceLineNo">682</span> LruBlockCache l1 = getL1Internal(conf);<a name="line.682"></a> -<span class="sourceLineNo">683</span> // blockCacheDisabled is set as a side-effect of getL1Internal(), so check it again after the call.<a name="line.683"></a> -<span class="sourceLineNo">684</span> if (blockCacheDisabled) return null;<a name="line.684"></a> -<span class="sourceLineNo">685</span> BlockCache l2 = getL2(conf);<a name="line.685"></a> -<span class="sourceLineNo">686</span> if (l2 == null) {<a name="line.686"></a> -<span class="sourceLineNo">687</span> GLOBAL_BLOCK_CACHE_INSTANCE = l1;<a name="line.687"></a> -<span class="sourceLineNo">688</span> } else {<a name="line.688"></a> -<span class="sourceLineNo">689</span> boolean useExternal = conf.getBoolean(EXTERNAL_BLOCKCACHE_KEY, EXTERNAL_BLOCKCACHE_DEFAULT);<a name="line.689"></a> -<span class="sourceLineNo">690</span> boolean combinedWithLru = conf.getBoolean(BUCKET_CACHE_COMBINED_KEY,<a name="line.690"></a> -<span class="sourceLineNo">691</span> DEFAULT_BUCKET_CACHE_COMBINED);<a name="line.691"></a> -<span class="sourceLineNo">692</span> if (useExternal) {<a name="line.692"></a> -<span class="sourceLineNo">693</span> GLOBAL_BLOCK_CACHE_INSTANCE = new InclusiveCombinedBlockCache(l1, l2);<a name="line.693"></a> -<span class="sourceLineNo">694</span> } else {<a name="line.694"></a> -<span class="sourceLineNo">695</span> if (combinedWithLru) {<a name="line.695"></a> -<span class="sourceLineNo">696</span> GLOBAL_BLOCK_CACHE_INSTANCE = new CombinedBlockCache(l1, l2);<a name="line.696"></a> -<span class="sourceLineNo">697</span> } else {<a name="line.697"></a> -<span class="sourceLineNo">698</span> // L1 and L2 are not 'combined'. They are connected via the LruBlockCache victimhandler<a name="line.698"></a> -<span class="sourceLineNo">699</span> // mechanism. It is a little ugly but works according to the following: when the<a name="line.699"></a> -<span class="sourceLineNo">700</span> // background eviction thread runs, blocks evicted from L1 will go to L2 AND when we get<a name="line.700"></a> -<span class="sourceLineNo">701</span> // a block from the L1 cache, if not in L1, we will search L2.<a name="line.701"></a> -<span class="sourceLineNo">702</span> GLOBAL_BLOCK_CACHE_INSTANCE = l1;<a name="line.702"></a> -<span class="sourceLineNo">703</span> }<a name="line.703"></a> -<span class="sourceLineNo">704</span> }<a name="line.704"></a> -<span class="sourceLineNo">705</span> l1.setVictimCache(l2);<a name="line.705"></a> -<span class="sourceLineNo">706</span> }<a name="line.706"></a> -<span class="sourceLineNo">707</span> return GLOBAL_BLOCK_CACHE_INSTANCE;<a name="line.707"></a> -<span class="sourceLineNo">708</span> }<a name="line.708"></a> -<span class="sourceLineNo">709</span><a name="line.709"></a> -<span class="sourceLineNo">710</span> // Supposed to use only from tests. 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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);<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>
