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Posted to commits@hbase.apache.org by gi...@apache.org on 2018/10/15 14:53:26 UTC
[29/38] hbase-site git commit: Published site at
4a043126b1bc9ef92ddbe04732ec5ac769d15b0f.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/9c64af45/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 0f2fd75..bf5af92 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
@@ -56,638 +56,660 @@
<span class="sourceLineNo">048</span> /**<a name="line.48"></a>
<span class="sourceLineNo">049</span> * Disabled cache configuration<a name="line.49"></a>
<span class="sourceLineNo">050</span> */<a name="line.50"></a>
-<span class="sourceLineNo">051</span><a name="line.51"></a>
-<span class="sourceLineNo">052</span> public static final CacheConfig DISABLED = new CacheConfig();<a name="line.52"></a>
-<span class="sourceLineNo">053</span><a name="line.53"></a>
-<span class="sourceLineNo">054</span><a name="line.54"></a>
-<span class="sourceLineNo">055</span> /**<a name="line.55"></a>
-<span class="sourceLineNo">056</span> * Configuration key to cache data blocks on read. Bloom blocks and index blocks are always be<a name="line.56"></a>
-<span class="sourceLineNo">057</span> * cached if the block cache is enabled.<a name="line.57"></a>
-<span class="sourceLineNo">058</span> */<a name="line.58"></a>
-<span class="sourceLineNo">059</span> public static final String CACHE_DATA_ON_READ_KEY = "hbase.block.data.cacheonread";<a name="line.59"></a>
-<span class="sourceLineNo">060</span><a name="line.60"></a>
-<span class="sourceLineNo">061</span> /**<a name="line.61"></a>
-<span class="sourceLineNo">062</span> * Configuration key to cache data blocks on write. There are separate<a name="line.62"></a>
-<span class="sourceLineNo">063</span> * switches for bloom blocks and non-root index blocks.<a name="line.63"></a>
-<span class="sourceLineNo">064</span> */<a name="line.64"></a>
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-<span class="sourceLineNo">066</span> "hbase.rs.cacheblocksonwrite";<a name="line.66"></a>
-<span class="sourceLineNo">067</span><a name="line.67"></a>
-<span class="sourceLineNo">068</span> /**<a name="line.68"></a>
-<span class="sourceLineNo">069</span> * Configuration key to cache leaf and intermediate-level index blocks on<a name="line.69"></a>
-<span class="sourceLineNo">070</span> * write.<a name="line.70"></a>
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-<span class="sourceLineNo">074</span><a name="line.74"></a>
-<span class="sourceLineNo">075</span> /**<a name="line.75"></a>
-<span class="sourceLineNo">076</span> * Configuration key to cache compound bloom filter blocks on write.<a name="line.76"></a>
-<span class="sourceLineNo">077</span> */<a name="line.77"></a>
-<span class="sourceLineNo">078</span> public static final String CACHE_BLOOM_BLOCKS_ON_WRITE_KEY =<a name="line.78"></a>
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-<span class="sourceLineNo">080</span><a name="line.80"></a>
-<span class="sourceLineNo">081</span> /**<a name="line.81"></a>
-<span class="sourceLineNo">082</span> * Configuration key to cache data blocks in compressed and/or encrypted format.<a name="line.82"></a>
-<span class="sourceLineNo">083</span> */<a name="line.83"></a>
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-<span class="sourceLineNo">086</span><a name="line.86"></a>
-<span class="sourceLineNo">087</span> /**<a name="line.87"></a>
-<span class="sourceLineNo">088</span> * Configuration key to evict all blocks of a given file from the block cache<a name="line.88"></a>
-<span class="sourceLineNo">089</span> * when the file is closed.<a name="line.89"></a>
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-<span class="sourceLineNo">093</span><a name="line.93"></a>
-<span class="sourceLineNo">094</span> /**<a name="line.94"></a>
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-<span class="sourceLineNo">097</span><a name="line.97"></a>
-<span class="sourceLineNo">098</span> /**<a name="line.98"></a>
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-<span class="sourceLineNo">104</span> * <code>/tmp/bucketcache.data</code> but the metadata on where the data is in the supplied file<a name="line.104"></a>
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-<span class="sourceLineNo">120</span> /**<a name="line.120"></a>
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-<span class="sourceLineNo">123</span> public static final int DEFAULT_BUCKET_CACHE_WRITER_THREADS = 3;<a name="line.123"></a>
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-<span class="sourceLineNo">125</span><a name="line.125"></a>
-<span class="sourceLineNo">126</span> /**<a name="line.126"></a>
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-<span class="sourceLineNo">128</span> * when the file is opened.<a name="line.128"></a>
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-<span class="sourceLineNo">132</span><a name="line.132"></a>
-<span class="sourceLineNo">133</span> /**<a name="line.133"></a>
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-<span class="sourceLineNo">135</span> * {@link HConstants#DEFAULT_BLOCKSIZE}.<a name="line.135"></a>
-<span class="sourceLineNo">136</span> * TODO: this config point is completely wrong, as it's used to determine the<a name="line.136"></a>
-<span class="sourceLineNo">137</span> * target block size of BlockCache instances. Rename.<a name="line.137"></a>
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-<span class="sourceLineNo">141</span> private static final String EXTERNAL_BLOCKCACHE_KEY = "hbase.blockcache.use.external";<a name="line.141"></a>
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-<span class="sourceLineNo">143</span><a name="line.143"></a>
-<span class="sourceLineNo">144</span> private static final String EXTERNAL_BLOCKCACHE_CLASS_KEY = "hbase.blockcache.external.class";<a name="line.144"></a>
-<span class="sourceLineNo">145</span> private static final String DROP_BEHIND_CACHE_COMPACTION_KEY =<a name="line.145"></a>
-<span class="sourceLineNo">146</span> "hbase.hfile.drop.behind.compaction";<a name="line.146"></a>
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-<span class="sourceLineNo">149</span> /**<a name="line.149"></a>
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-<span class="sourceLineNo">151</span> * This is used for config.<a name="line.151"></a>
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-<span class="sourceLineNo">155</span> // TODO(eclark): Consider more. Redis, etc.<a name="line.155"></a>
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-<span class="sourceLineNo">157</span> ExternalBlockCaches(String clazzName) {<a name="line.157"></a>
-<span class="sourceLineNo">158</span> try {<a name="line.158"></a>
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-<span class="sourceLineNo">192</span><a name="line.192"></a>
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+<span class="sourceLineNo">115</span> */<a name="line.115"></a>
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+<span class="sourceLineNo">117</span><a name="line.117"></a>
+<span class="sourceLineNo">118</span> /**<a name="line.118"></a>
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+<span class="sourceLineNo">124</span> /**<a name="line.124"></a>
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+<span class="sourceLineNo">131</span> /**<a name="line.131"></a>
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+<span class="sourceLineNo">134</span> * TODO: this config point is completely wrong, as it's used to determine the<a name="line.134"></a>
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+<span class="sourceLineNo">147</span> /**<a name="line.147"></a>
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+<span class="sourceLineNo">149</span> * This is used for config.<a name="line.149"></a>
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+<span class="sourceLineNo">153</span> // TODO(eclark): Consider more. Redis, etc.<a name="line.153"></a>
+<span class="sourceLineNo">154</span> Class<? extends BlockCache> clazz;<a name="line.154"></a>
+<span class="sourceLineNo">155</span> ExternalBlockCaches(String clazzName) {<a name="line.155"></a>
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+<span class="sourceLineNo">158</span> } catch (ClassNotFoundException cnef) {<a name="line.158"></a>
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+<span class="sourceLineNo">160</span> }<a name="line.160"></a>
+<span class="sourceLineNo">161</span> }<a name="line.161"></a>
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+<span class="sourceLineNo">165</span> }<a name="line.165"></a>
+<span class="sourceLineNo">166</span><a name="line.166"></a>
+<span class="sourceLineNo">167</span> // Defaults<a name="line.167"></a>
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+<span class="sourceLineNo">176</span><a name="line.176"></a>
+<span class="sourceLineNo">177</span> /** Local reference to the block cache, null if completely disabled */<a name="line.177"></a>
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+<span class="sourceLineNo">179</span><a name="line.179"></a>
+<span class="sourceLineNo">180</span> /**<a name="line.180"></a>
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+<span class="sourceLineNo">182</span> * cache but this can be turned off on a per-family or per-request basis).<a name="line.182"></a>
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+<span class="sourceLineNo">184</span> * This cannot be disabled.<a name="line.184"></a>
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+<span class="sourceLineNo">187</span><a name="line.187"></a>
+<span class="sourceLineNo">188</span> /** Whether blocks should be flagged as in-memory when being cached */<a name="line.188"></a>
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+<span class="sourceLineNo">190</span><a name="line.190"></a>
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+<span class="sourceLineNo">193</span><a name="line.193"></a>
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+<span class="sourceLineNo">196</span><a name="line.196"></a>
+<span class="sourceLineNo">197</span> /** Whether compound bloom filter blocks should be cached on write */<a name="line.197"></a>
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+<span class="sourceLineNo">199</span><a name="line.199"></a>
+<span class="sourceLineNo">200</span> /** Whether blocks of a file should be evicted when the file is closed */<a name="line.200"></a>
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+<span class="sourceLineNo">202</span><a name="line.202"></a>
+<span class="sourceLineNo">203</span> /** Whether data blocks should be stored in compressed and/or encrypted form in the cache */<a name="line.203"></a>
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+<span class="sourceLineNo">205</span><a name="line.205"></a>
+<span class="sourceLineNo">206</span> /** Whether data blocks should be prefetched into the cache */<a name="line.206"></a>
+<span class="sourceLineNo">207</span> private final boolean prefetchOnOpen;<a name="line.207"></a>
+<span class="sourceLineNo">208</span><a name="line.208"></a>
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-<span class="sourceLineNo">225</span> // if they are enabled in the global configuration.<a name="line.225"></a>
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-<span class="sourceLineNo">241</span><a name="line.241"></a>
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-<span class="sourceLineNo">244</span> * defaults for family level settings. Only use if no column family context. Prefer<a name="line.244"></a>
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-<span class="sourceLineNo">252</span> DEFAULT_IN_MEMORY, // This is a family-level setting so can't be set<a name="line.252"></a>
-<span class="sourceLineNo">253</span> // strictly from conf<a name="line.253"></a>
-<span class="sourceLineNo">254</span> conf.getBoolean(CACHE_BLOCKS_ON_WRITE_KEY, DEFAULT_CACHE_DATA_ON_WRITE),<a name="line.254"></a>
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-<span class="sourceLineNo">261</span> );<a name="line.261"></a>
-<span class="sourceLineNo">262</span> LOG.info("Created cacheConfig: " + this);<a name="line.262"></a>
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-<span class="sourceLineNo">264</span><a name="line.264"></a>
-<span class="sourceLineNo">265</span> /**<a name="line.265"></a>
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-<span class="sourceLineNo">269</span> * blocks and BLOOM blocks; this cannot be disabled).<a name="line.269"></a>
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-<span class="sourceLineNo">271</span> * @param cacheDataOnWrite whether data blocks should be cached on write<a name="line.271"></a>
-<span class="sourceLineNo">272</span> * @param cacheIndexesOnWrite whether index blocks should be cached on write<a name="line.272"></a>
-<span class="sourceLineNo">273</span> * @param cacheBloomsOnWrite whether blooms should be cached on write<a name="line.273"></a>
-<span class="sourceLineNo">274</span> * @param evictOnClose whether blocks should be evicted when HFile is closed<a name="line.274"></a>
-<span class="sourceLineNo">275</span> * @param cacheDataCompressed whether to store blocks as compressed in the cache<a name="line.275"></a>
-<span class="sourceLineNo">276</span> * @param prefetchOnOpen whether to prefetch blocks upon open<a name="line.276"></a>
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-<span class="sourceLineNo">278</span> * data blocks up in the L1 tier.<a name="line.278"></a>
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+<span class="sourceLineNo">218</span> this(CacheConfig.instantiateBlockCache(conf),<a name="line.218"></a>
+<span class="sourceLineNo">219</span> conf.getBoolean(CACHE_DATA_ON_READ_KEY, DEFAULT_CACHE_DATA_ON_READ)<a name="line.219"></a>
+<span class="sourceLineNo">220</span> && family.isBlockCacheEnabled(),<a name="line.220"></a>
+<span class="sourceLineNo">221</span> family.isInMemory(),<a name="line.221"></a>
+<span class="sourceLineNo">222</span> // For the following flags we enable them regardless of per-schema settings<a name="line.222"></a>
+<span class="sourceLineNo">223</span> // if they are enabled in the global configuration.<a name="line.223"></a>
+<span class="sourceLineNo">224</span> conf.getBoolean(CACHE_BLOCKS_ON_WRITE_KEY,<a name="line.224"></a>
+<span class="sourceLineNo">225</span> DEFAULT_CACHE_DATA_ON_WRITE) || family.isCacheDataOnWrite(),<a name="line.225"></a>
+<span class="sourceLineNo">226</span> conf.getBoolean(CACHE_INDEX_BLOCKS_ON_WRITE_KEY,<a name="line.226"></a>
+<span class="sourceLineNo">227</span> DEFAULT_CACHE_INDEXES_ON_WRITE) || family.isCacheIndexesOnWrite(),<a name="line.227"></a>
+<span class="sourceLineNo">228</span> conf.getBoolean(CACHE_BLOOM_BLOCKS_ON_WRITE_KEY,<a name="line.228"></a>
+<span class="sourceLineNo">229</span> DEFAULT_CACHE_BLOOMS_ON_WRITE) || family.isCacheBloomsOnWrite(),<a name="line.229"></a>
+<span class="sourceLineNo">230</span> conf.getBoolean(EVICT_BLOCKS_ON_CLOSE_KEY,<a name="line.230"></a>
+<span class="sourceLineNo">231</span> DEFAULT_EVICT_ON_CLOSE) || family.isEvictBlocksOnClose(),<a name="line.231"></a>
+<span class="sourceLineNo">232</span> conf.getBoolean(CACHE_DATA_BLOCKS_COMPRESSED_KEY, DEFAULT_CACHE_DATA_COMPRESSED),<a name="line.232"></a>
+<span class="sourceLineNo">233</span> conf.getBoolean(PREFETCH_BLOCKS_ON_OPEN_KEY,<a name="line.233"></a>
+<span class="sourceLineNo">234</span> DEFAULT_PREFETCH_ON_OPEN) || family.isPrefetchBlocksOnOpen(),<a name="line.234"></a>
+<span class="sourceLineNo">235</span> conf.getBoolean(DROP_BEHIND_CACHE_COMPACTION_KEY, DROP_BEHIND_CACHE_COMPACTION_DEFAULT)<a name="line.235"></a>
+<span class="sourceLineNo">236</span> );<a name="line.236"></a>
+<span class="sourceLineNo">237</span> LOG.info("Created cacheConfig for " + family.getNameAsString() + ": " + this);<a name="line.237"></a>
+<span class="sourceLineNo">238</span> }<a name="line.238"></a>
+<span class="sourceLineNo">239</span><a name="line.239"></a>
+<span class="sourceLineNo">240</span> /**<a name="line.240"></a>
+<span class="sourceLineNo">241</span> * Create a cache configuration using the specified configuration object and<a name="line.241"></a>
+<span class="sourceLineNo">242</span> * defaults for family level settings. Only use if no column family context. Prefer<a name="line.242"></a>
+<span class="sourceLineNo">243</span> * {@link CacheConfig#CacheConfig(Configuration, ColumnFamilyDescriptor)}<a name="line.243"></a>
+<span class="sourceLineNo">244</span> * @see #CacheConfig(Configuration, ColumnFamilyDescriptor)<a name="line.244"></a>
+<span class="sourceLineNo">245</span> * @param conf hbase configuration<a name="line.245"></a>
+<span class="sourceLineNo">246</span> */<a name="line.246"></a>
+<span class="sourceLineNo">247</span> public CacheConfig(Configuration conf) {<a name="line.247"></a>
+<span class="sourceLineNo">248</span> this(conf, true);<a name="line.248"></a>
+<span class="sourceLineNo">249</span> }<a name="line.249"></a>
+<span class="sourceLineNo">250</span><a name="line.250"></a>
+<span class="sourceLineNo">251</span> public CacheConfig(Configuration conf, boolean enableBlockCache) {<a name="line.251"></a>
+<span class="sourceLineNo">252</span> this(conf, enableBlockCache,<a name="line.252"></a>
+<span class="sourceLineNo">253</span> conf.getBoolean(CACHE_DATA_ON_READ_KEY, DEFAULT_CACHE_DATA_ON_READ),<a name="line.253"></a>
+<span class="sourceLineNo">254</span> DEFAULT_IN_MEMORY, // This is a family-level setting so can't be set<a name="line.254"></a>
+<span class="sourceLineNo">255</span> // strictly from conf<a name="line.255"></a>
+<span class="sourceLineNo">256</span> conf.getBoolean(CACHE_BLOCKS_ON_WRITE_KEY, DEFAULT_CACHE_DATA_ON_WRITE),<a name="line.256"></a>
+<span class="sourceLineNo">257</span> conf.getBoolean(CACHE_INDEX_BLOCKS_ON_WRITE_KEY, DEFAULT_CACHE_INDEXES_ON_WRITE),<a name="line.257"></a>
+<span class="sourceLineNo">258</span> conf.getBoolean(CACHE_BLOOM_BLOCKS_ON_WRITE_KEY, DEFAULT_CACHE_BLOOMS_ON_WRITE),<a name="line.258"></a>
+<span class="sourceLineNo">259</span> conf.getBoolean(EVICT_BLOCKS_ON_CLOSE_KEY, DEFAULT_EVICT_ON_CLOSE),<a name="line.259"></a>
+<span class="sourceLineNo">260</span> conf.getBoolean(CACHE_DATA_BLOCKS_COMPRESSED_KEY, DEFAULT_CACHE_DATA_COMPRESSED),<a name="line.260"></a>
+<span class="sourceLineNo">261</span> conf.getBoolean(PREFETCH_BLOCKS_ON_OPEN_KEY, DEFAULT_PREFETCH_ON_OPEN),<a name="line.261"></a>
+<span class="sourceLineNo">262</span> conf.getBoolean(DROP_BEHIND_CACHE_COMPACTION_KEY, DROP_BEHIND_CACHE_COMPACTION_DEFAULT));<a name="line.262"></a>
+<span class="sourceLineNo">263</span> LOG.info("Created cacheConfig: " + this);<a name="line.263"></a>
+<span class="sourceLineNo">264</span> }<a name="line.264"></a>
+<span class="sourceLineNo">265</span><a name="line.265"></a>
+<span class="sourceLineNo">266</span> private CacheConfig(Configuration conf, boolean enableBlockCache,<a name="line.266"></a>
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+<span class="sourceLineNo">268</span> final boolean cacheDataOnWrite, final boolean cacheIndexesOnWrite,<a name="line.268"></a>
+<span class="sourceLineNo">269</span> final boolean cacheBloomsOnWrite, final boolean evictOnClose,<a name="line.269"></a>
+<span class="sourceLineNo">270</span> final boolean cacheDataCompressed, final boolean prefetchOnOpen,<a name="line.270"></a>
+<span class="sourceLineNo">271</span> final boolean dropBehindCompaction) {<a name="line.271"></a>
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+<span class="sourceLineNo">273</span> this.blockCache = CacheConfig.instantiateBlockCache(conf);<a name="line.273"></a>
+<span class="sourceLineNo">274</span> } else {<a name="line.274"></a>
+<span class="sourceLineNo">275</span> this.blockCache = null;<a name="line.275"></a>
+<span class="sourceLineNo">276</span> }<a name="line.276"></a>
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+<span class="sourceLineNo">278</span> this.inMemory = inMemory;<a name="line.278"></a>
+<span class="sourceLineNo">279</span> this.cacheDataOnWrite = cacheDataOnWrite;<a name="line.279"></a>
+<span class="sourceLineNo">280</span> this.cacheIndexesOnWrite = cacheIndexesOnWrite;<a name="line.280"></a>
+<span class="sourceLineNo">281</span> this.cacheBloomsOnWrite = cacheBloomsOnWrite;<a name="line.281"></a>
+<span class="sourceLineNo">282</span> this.evictOnClose = evictOnClose;<a name="line.282"></a>
+<span class="sourceLineNo">283</span> this.cacheDataCompressed = cacheDataCompressed;<a name="line.283"></a>
+<span class="sourceLineNo">284</span> this.prefetchOnOpen = prefetchOnOpen;<a name="line.284"></a>
+<span class="sourceLineNo">285</span> this.dropBehindCompaction = dropBehindCompaction;<a name="line.285"></a>
+<span class="sourceLineNo">286</span> }<a name="line.286"></a>
+<span class="sourceLineNo">287</span><a name="line.287"></a>
+<span class="sourceLineNo">288</span> /**<a name="line.288"></a>
+<span class="sourceLineNo">289</span> * Create a block cache configuration with the specified cache and configuration parameters.<a name="line.289"></a>
+<span class="sourceLineNo">290</span> * @param blockCache reference to block cache, null if completely disabled<a name="line.290"></a>
+<span class="sourceLineNo">291</span> * @param cacheDataOnRead whether DATA blocks should be cached on read (we always cache INDEX<a name="line.291"></a>
+<span class="sourceLineNo">292</span> * blocks and BLOOM blocks; this cannot be disabled).<a name="line.292"></a>
+<span class="sourceLineNo">293</span> * @param inMemory whether blocks should be flagged as in-memory<a name="line.293"></a>
+<span class="sourceLineNo">294</span> * @param cacheDataOnWrite whether data blocks should be cached on write<a name="line.294"></a>
+<span class="sourceLineNo">295</span> * @param cacheIndexesOnWrite whether index blocks should be cached on write<a name="line.295"></a>
+<span class="sourceLineNo">296</span> * @param cacheBloomsOnWrite whether blooms should be cached on write<a name="line.296"></a>
+<span class="sourceLineNo">297</span> * @param evictOnClose whether blocks should be evicted when HFile is closed<a name="line.297"></a>
+<span class="sourceLineNo">298</span> * @param cacheDataCompressed whether to store blocks as compressed in the cache<a name="line.298"></a>
+<span class="sourceLineNo">299</span> * @param prefetchOnOpen whether to prefetch blocks upon open<a name="line.299"></a>
+<span class="sourceLineNo">300</span> * @param dropBehindCompaction indicate that we should set drop behind to true when open a store<a name="line.300"></a>
+<span class="sourceLineNo">301</span> * file reader for compaction<a name="line.301"></a>
+<span class="sourceLineNo">302</span> */<a name="line.302"></a>
+<span class="sourceLineNo">303</span> @VisibleForTesting<a name="line.303"></a>
+<span class="sourceLineNo">304</span> CacheConfig(final BlockCache blockCache,<a name="line.304"></a>
+<span class="sourceLineNo">305</span> final boolean cacheDataOnRead, final boolean inMemory,<a name="line.305"></a>
+<span class="sourceLineNo">306</span> final boolean cacheDataOnWrite, final boolean cacheIndexesOnWrite,<a name="line.306"></a>
+<span class="sourceLineNo">307</span> final boolean cacheBloomsOnWrite, final boolean evictOnClose,<a name="line.307"></a>
+<span class="sourceLineNo">308</span> final boolean cacheDataCompressed, final boolean prefetchOnOpen,<a name="line.308"></a>
+<span class="sourceLineNo">309</span> final boolean dropBehindCompaction) {<a name="line.309"></a>
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+<span class="sourceLineNo">311</span> this.cacheDataOnRead = cacheDataOnRead;<a name="line.311"></a>
+<span class="sourceLineNo">312</span> this.inMemory = inMemory;<a name="line.312"></a>
+<span class="sourceLineNo">313</span> this.cacheDataOnWrite = cacheDataOnWrite;<a name="line.313"></a>
+<span class="sourceLineNo">314</span> this.cacheIndexesOnWrite = cacheIndexesOnWrite;<a name="line.314"></a>
+<span class="sourceLineNo">315</span> this.cacheBloomsOnWrite = cacheBloomsOnWrite;<a name="line.315"></a>
+<span class="sourceLineNo">316</span> this.evictOnClose = evictOnClose;<a name="line.316"></a>
+<span class="sourceLineNo">317</span> this.cacheDataCompressed = cacheDataCompressed;<a name="line.317"></a>
+<span class="sourceLineNo">318</span> this.prefetchOnOpen = prefetchOnOpen;<a name="line.318"></a>
+<span class="sourceLineNo">319</span> this.dropBehindCompaction = dropBehindCompaction;<a name="line.319"></a>
+<span class="sourceLineNo">320</span> }<a name="line.320"></a>
+<span class="sourceLineNo">321</span><a name="line.321"></a>
+<span class="sourceLineNo">322</span> /**<a name="line.322"></a>
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+<span class="sourceLineNo">324</span> * @param cacheConf<a name="line.324"></a>
+<span class="sourceLineNo">325</span> */<a name="line.325"></a>
+<span class="sourceLineNo">326</span> public CacheConfig(CacheConfig cacheConf) {<a name="line.326"></a>
+<span class="sourceLineNo">327</span> this(cacheConf.blockCache, cacheConf.cacheDataOnRead, cacheConf.inMemory,<a name="line.327"></a>
+<span class="sourceLineNo">328</span> cacheConf.cacheDataOnWrite, cacheConf.cacheIndexesOnWrite,<a name="line.328"></a>
+<span class="sourceLineNo">329</span> cacheConf.cacheBloomsOnWrite, cacheConf.evictOnClose,<a name="line.329"></a>
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+<span class="sourceLineNo">331</span> cacheConf.dropBehindCompaction);<a name="line.331"></a>
+<span class="sourceLineNo">332</span> }<a name="line.332"></a>
+<span class="sourceLineNo">333</span><a name="line.333"></a>
+<span class="sourceLineNo">334</span> private CacheConfig() {<a name="line.334"></a>
+<span class="sourceLineNo">335</span> this(null, false, false, false, false, false, false, false, false, false);<a name="line.335"></a>
+<span class="sourceLineNo">336</span> }<a name="line.336"></a>
+<span class="sourceLineNo">337</span><a name="line.337"></a>
+<span class="sourceLineNo">338</span> /**<a name="line.338"></a>
+<span class="sourceLineNo">339</span> * Checks whether the block cache is enabled.<a name="line.339"></a>
+<span class="sourceLineNo">340</span> */<a name="line.340"></a>
+<span class="sourceLineNo">341</span> public boolean isBlockCacheEnabled() {<a name="line.341"></a>
+<span class="sourceLineNo">342</span> return this.blockCache != null;<a name="line.342"></a>
+<span class="sourceLineNo">343</span> }<a name="line.343"></a>
+<span class="sourceLineNo">344</span><a name="line.344"></a>
+<span class="sourceLineNo">345</span> /**<a name="line.345"></a>
+<span class="sourceLineNo">346</span> * Returns the block cache.<a name="line.346"></a>
+<span class="sourceLineNo">347</span> * @return the block cache, or null if caching is completely disabled<a name="line.347"></a>
<span class="sourceLineNo">348</span> */<a name="line.348"></a>
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-<span class="sourceLineNo">351</span> && (cacheDataOnRead ||<a name="line.351"></a>
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-<span class="sourceLineNo">355</span> (category != BlockCategory.META &&<a name="line.355"></a>
-<span class="sourceLineNo">356</span> category != BlockCategory.UNKNOWN)));<a name="line.356"></a>
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-<span class="sourceLineNo">363</span> return isBlockCacheEnabled() && this.inMemory;<a name="line.363"></a>
+<span class="sourceLineNo">349</span> public BlockCache getBlockCache() {<a name="line.349"></a>
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+<span class="sourceLineNo">351</span> }<a name="line.351"></a>
+<span class="sourceLineNo">352</span><a name="line.352"></a>
+<span class="sourceLineNo">353</span> /**<a name="line.353"></a>
+<span class="sourceLineNo">354</span> * Returns whether the DATA blocks of this HFile should be cached on read or not (we always<a name="line.354"></a>
+<span class="sourceLineNo">355</span> * cache the meta blocks, the INDEX and BLOOM blocks).<a name="line.355"></a>
+<span class="sourceLineNo">356</span> * @return true if blocks should be cached on read, false if not<a name="line.356"></a>
+<span class="sourceLineNo">357</span> */<a name="line.357"></a>
+<span class="sourceLineNo">358</span> public boolean shouldCacheDataOnRead() {<a name="line.358"></a>
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+<span class="sourceLineNo">361</span><a name="line.361"></a>
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