You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@hbase.apache.org by gi...@apache.org on 2018/04/03 14:47:52 UTC
[07/26] hbase-site git commit: Published site at
219625233c1e8ad9daf2c35bc2e3a0844e1b97ba.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/21347dff/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/CompactingMemStore.InMemoryFlushRunnable.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/CompactingMemStore.InMemoryFlushRunnable.html b/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/CompactingMemStore.InMemoryFlushRunnable.html
index 3dbdec3..22e7059 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/CompactingMemStore.InMemoryFlushRunnable.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/CompactingMemStore.InMemoryFlushRunnable.html
@@ -127,468 +127,470 @@
<span class="sourceLineNo">119</span> // initialization of the flush size should happen after initialization of the index type<a name="line.119"></a>
<span class="sourceLineNo">120</span> // so do not transfer the following method<a name="line.120"></a>
<span class="sourceLineNo">121</span> initInmemoryFlushSize(conf);<a name="line.121"></a>
-<span class="sourceLineNo">122</span> }<a name="line.122"></a>
-<span class="sourceLineNo">123</span><a name="line.123"></a>
-<span class="sourceLineNo">124</span> @VisibleForTesting<a name="line.124"></a>
-<span class="sourceLineNo">125</span> protected MemStoreCompactor createMemStoreCompactor(MemoryCompactionPolicy compactionPolicy)<a name="line.125"></a>
-<span class="sourceLineNo">126</span> throws IllegalArgumentIOException {<a name="line.126"></a>
-<span class="sourceLineNo">127</span> return new MemStoreCompactor(this, compactionPolicy);<a name="line.127"></a>
-<span class="sourceLineNo">128</span> }<a name="line.128"></a>
-<span class="sourceLineNo">129</span><a name="line.129"></a>
-<span class="sourceLineNo">130</span> private void initInmemoryFlushSize(Configuration conf) {<a name="line.130"></a>
-<span class="sourceLineNo">131</span> double factor = 0;<a name="line.131"></a>
-<span class="sourceLineNo">132</span> long memstoreFlushSize = getRegionServices().getMemStoreFlushSize();<a name="line.132"></a>
-<span class="sourceLineNo">133</span> int numStores = getRegionServices().getNumStores();<a name="line.133"></a>
-<span class="sourceLineNo">134</span> if (numStores <= 1) {<a name="line.134"></a>
-<span class="sourceLineNo">135</span> // Family number might also be zero in some of our unit test case<a name="line.135"></a>
-<span class="sourceLineNo">136</span> numStores = 1;<a name="line.136"></a>
-<span class="sourceLineNo">137</span> }<a name="line.137"></a>
-<span class="sourceLineNo">138</span> inmemoryFlushSize = memstoreFlushSize / numStores;<a name="line.138"></a>
-<span class="sourceLineNo">139</span> // multiply by a factor (the same factor for all index types)<a name="line.139"></a>
-<span class="sourceLineNo">140</span> factor = conf.getDouble(IN_MEMORY_FLUSH_THRESHOLD_FACTOR_KEY,<a name="line.140"></a>
-<span class="sourceLineNo">141</span> IN_MEMORY_FLUSH_THRESHOLD_FACTOR_DEFAULT);<a name="line.141"></a>
-<span class="sourceLineNo">142</span><a name="line.142"></a>
-<span class="sourceLineNo">143</span> inmemoryFlushSize = (long) (inmemoryFlushSize * factor);<a name="line.143"></a>
-<span class="sourceLineNo">144</span> LOG.info("Setting in-memory flush size threshold to {} and immutable segments index to type={}",<a name="line.144"></a>
-<span class="sourceLineNo">145</span> StringUtils.byteDesc(inmemoryFlushSize), indexType);<a name="line.145"></a>
-<span class="sourceLineNo">146</span> }<a name="line.146"></a>
-<span class="sourceLineNo">147</span><a name="line.147"></a>
-<span class="sourceLineNo">148</span> /**<a name="line.148"></a>
-<span class="sourceLineNo">149</span> * @return Total memory occupied by this MemStore. This won't include any size occupied by the<a name="line.149"></a>
-<span class="sourceLineNo">150</span> * snapshot. We assume the snapshot will get cleared soon. This is not thread safe and<a name="line.150"></a>
-<span class="sourceLineNo">151</span> * the memstore may be changed while computing its size. It is the responsibility of the<a name="line.151"></a>
-<span class="sourceLineNo">152</span> * caller to make sure this doesn't happen.<a name="line.152"></a>
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-<span class="sourceLineNo">154</span> @Override<a name="line.154"></a>
-<span class="sourceLineNo">155</span> public MemStoreSize size() {<a name="line.155"></a>
-<span class="sourceLineNo">156</span> MemStoreSizing memstoreSizing = new MemStoreSizing();<a name="line.156"></a>
-<span class="sourceLineNo">157</span> memstoreSizing.incMemStoreSize(active.getMemStoreSize());<a name="line.157"></a>
-<span class="sourceLineNo">158</span> for (Segment item : pipeline.getSegments()) {<a name="line.158"></a>
-<span class="sourceLineNo">159</span> memstoreSizing.incMemStoreSize(item.getMemStoreSize());<a name="line.159"></a>
-<span class="sourceLineNo">160</span> }<a name="line.160"></a>
-<span class="sourceLineNo">161</span> return memstoreSizing;<a name="line.161"></a>
-<span class="sourceLineNo">162</span> }<a name="line.162"></a>
-<span class="sourceLineNo">163</span><a name="line.163"></a>
-<span class="sourceLineNo">164</span> /**<a name="line.164"></a>
-<span class="sourceLineNo">165</span> * This method is called before the flush is executed.<a name="line.165"></a>
-<span class="sourceLineNo">166</span> * @return an estimation (lower bound) of the unflushed sequence id in memstore after the flush<a name="line.166"></a>
-<span class="sourceLineNo">167</span> * is executed. if memstore will be cleared returns {@code HConstants.NO_SEQNUM}.<a name="line.167"></a>
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-<span class="sourceLineNo">169</span> @Override<a name="line.169"></a>
-<span class="sourceLineNo">170</span> public long preFlushSeqIDEstimation() {<a name="line.170"></a>
-<span class="sourceLineNo">171</span> if(compositeSnapshot) {<a name="line.171"></a>
-<span class="sourceLineNo">172</span> return HConstants.NO_SEQNUM;<a name="line.172"></a>
-<span class="sourceLineNo">173</span> }<a name="line.173"></a>
-<span class="sourceLineNo">174</span> Segment segment = getLastSegment();<a name="line.174"></a>
-<span class="sourceLineNo">175</span> if(segment == null) {<a name="line.175"></a>
-<span class="sourceLineNo">176</span> return HConstants.NO_SEQNUM;<a name="line.176"></a>
-<span class="sourceLineNo">177</span> }<a name="line.177"></a>
-<span class="sourceLineNo">178</span> return segment.getMinSequenceId();<a name="line.178"></a>
-<span class="sourceLineNo">179</span> }<a name="line.179"></a>
-<span class="sourceLineNo">180</span><a name="line.180"></a>
-<span class="sourceLineNo">181</span> @Override<a name="line.181"></a>
-<span class="sourceLineNo">182</span> public boolean isSloppy() {<a name="line.182"></a>
-<span class="sourceLineNo">183</span> return true;<a name="line.183"></a>
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-<span class="sourceLineNo">185</span><a name="line.185"></a>
-<span class="sourceLineNo">186</span> /**<a name="line.186"></a>
-<span class="sourceLineNo">187</span> * Push the current active memstore segment into the pipeline<a name="line.187"></a>
-<span class="sourceLineNo">188</span> * and create a snapshot of the tail of current compaction pipeline<a name="line.188"></a>
-<span class="sourceLineNo">189</span> * Snapshot must be cleared by call to {@link #clearSnapshot}.<a name="line.189"></a>
-<span class="sourceLineNo">190</span> * {@link #clearSnapshot(long)}.<a name="line.190"></a>
-<span class="sourceLineNo">191</span> * @return {@link MemStoreSnapshot}<a name="line.191"></a>
-<span class="sourceLineNo">192</span> */<a name="line.192"></a>
-<span class="sourceLineNo">193</span> @Override<a name="line.193"></a>
-<span class="sourceLineNo">194</span> public MemStoreSnapshot snapshot() {<a name="line.194"></a>
-<span class="sourceLineNo">195</span> // If snapshot currently has entries, then flusher failed or didn't call<a name="line.195"></a>
-<span class="sourceLineNo">196</span> // cleanup. Log a warning.<a name="line.196"></a>
-<span class="sourceLineNo">197</span> if (!this.snapshot.isEmpty()) {<a name="line.197"></a>
-<span class="sourceLineNo">198</span> LOG.warn("Snapshot called again without clearing previous. " +<a name="line.198"></a>
-<span class="sourceLineNo">199</span> "Doing nothing. Another ongoing flush or did we fail last attempt?");<a name="line.199"></a>
-<span class="sourceLineNo">200</span> } else {<a name="line.200"></a>
-<span class="sourceLineNo">201</span> LOG.debug("FLUSHING TO DISK {}, store={}",<a name="line.201"></a>
-<span class="sourceLineNo">202</span> getRegionServices().getRegionInfo().getEncodedName(), getFamilyName());<a name="line.202"></a>
-<span class="sourceLineNo">203</span> stopCompaction();<a name="line.203"></a>
-<span class="sourceLineNo">204</span> pushActiveToPipeline(this.active);<a name="line.204"></a>
-<span class="sourceLineNo">205</span> snapshotId = EnvironmentEdgeManager.currentTime();<a name="line.205"></a>
-<span class="sourceLineNo">206</span> // in both cases whatever is pushed to snapshot is cleared from the pipeline<a name="line.206"></a>
-<span class="sourceLineNo">207</span> if (compositeSnapshot) {<a name="line.207"></a>
-<span class="sourceLineNo">208</span> pushPipelineToSnapshot();<a name="line.208"></a>
-<span class="sourceLineNo">209</span> } else {<a name="line.209"></a>
-<span class="sourceLineNo">210</span> pushTailToSnapshot();<a name="line.210"></a>
-<span class="sourceLineNo">211</span> }<a name="line.211"></a>
-<span class="sourceLineNo">212</span> compactor.resetStats();<a name="line.212"></a>
-<span class="sourceLineNo">213</span> }<a name="line.213"></a>
-<span class="sourceLineNo">214</span> return new MemStoreSnapshot(snapshotId, this.snapshot);<a name="line.214"></a>
-<span class="sourceLineNo">215</span> }<a name="line.215"></a>
-<span class="sourceLineNo">216</span><a name="line.216"></a>
-<span class="sourceLineNo">217</span> /**<a name="line.217"></a>
-<span class="sourceLineNo">218</span> * On flush, how much memory we will clear.<a name="line.218"></a>
-<span class="sourceLineNo">219</span> * @return size of data that is going to be flushed<a name="line.219"></a>
-<span class="sourceLineNo">220</span> */<a name="line.220"></a>
-<span class="sourceLineNo">221</span> @Override<a name="line.221"></a>
-<span class="sourceLineNo">222</span> public MemStoreSize getFlushableSize() {<a name="line.222"></a>
-<span class="sourceLineNo">223</span> MemStoreSizing snapshotSizing = getSnapshotSizing();<a name="line.223"></a>
-<span class="sourceLineNo">224</span> if (snapshotSizing.getDataSize() == 0) {<a name="line.224"></a>
-<span class="sourceLineNo">225</span> // if snapshot is empty the tail of the pipeline (or everything in the memstore) is flushed<a name="line.225"></a>
-<span class="sourceLineNo">226</span> if (compositeSnapshot) {<a name="line.226"></a>
-<span class="sourceLineNo">227</span> snapshotSizing = pipeline.getPipelineSizing();<a name="line.227"></a>
-<span class="sourceLineNo">228</span> snapshotSizing.incMemStoreSize(active.getMemStoreSize());<a name="line.228"></a>
-<span class="sourceLineNo">229</span> } else {<a name="line.229"></a>
-<span class="sourceLineNo">230</span> snapshotSizing = pipeline.getTailSizing();<a name="line.230"></a>
-<span class="sourceLineNo">231</span> }<a name="line.231"></a>
-<span class="sourceLineNo">232</span> }<a name="line.232"></a>
-<span class="sourceLineNo">233</span> return snapshotSizing.getDataSize() > 0 ? snapshotSizing<a name="line.233"></a>
-<span class="sourceLineNo">234</span> : new MemStoreSize(active.getMemStoreSize());<a name="line.234"></a>
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-<span class="sourceLineNo">239</span> // Need to consider keySize of all segments in pipeline and active<a name="line.239"></a>
-<span class="sourceLineNo">240</span> long k = this.active.keySize();<a name="line.240"></a>
-<span class="sourceLineNo">241</span> for (Segment segment : this.pipeline.getSegments()) {<a name="line.241"></a>
-<span class="sourceLineNo">242</span> k += segment.keySize();<a name="line.242"></a>
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-<span class="sourceLineNo">248</span> protected long heapSize() {<a name="line.248"></a>
-<span class="sourceLineNo">249</span> // Need to consider heapOverhead of all segments in pipeline and active<a name="line.249"></a>
-<span class="sourceLineNo">250</span> long h = this.active.heapSize();<a name="line.250"></a>
-<span class="sourceLineNo">251</span> for (Segment segment : this.pipeline.getSegments()) {<a name="line.251"></a>
-<span class="sourceLineNo">252</span> h += segment.heapSize();<a name="line.252"></a>
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-<span class="sourceLineNo">254</span> return h;<a name="line.254"></a>
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-<span class="sourceLineNo">257</span> @Override<a name="line.257"></a>
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-<span class="sourceLineNo">259</span> long minSequenceId = pipeline.getMinSequenceId();<a name="line.259"></a>
-<span class="sourceLineNo">260</span> if(minSequenceId != Long.MAX_VALUE) {<a name="line.260"></a>
-<span class="sourceLineNo">261</span> byte[] encodedRegionName = getRegionServices().getRegionInfo().getEncodedNameAsBytes();<a name="line.261"></a>
-<span class="sourceLineNo">262</span> byte[] familyName = getFamilyNameInBytes();<a name="line.262"></a>
-<span class="sourceLineNo">263</span> WAL WAL = getRegionServices().getWAL();<a name="line.263"></a>
-<span class="sourceLineNo">264</span> if (WAL != null) {<a name="line.264"></a>
-<span class="sourceLineNo">265</span> WAL.updateStore(encodedRegionName, familyName, minSequenceId, onlyIfGreater);<a name="line.265"></a>
-<span class="sourceLineNo">266</span> }<a name="line.266"></a>
-<span class="sourceLineNo">267</span> }<a name="line.267"></a>
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-<span class="sourceLineNo">272</span> * are going to be part of the replaying edits from WAL<a name="line.272"></a>
-<span class="sourceLineNo">273</span> */<a name="line.273"></a>
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-<span class="sourceLineNo">278</span><a name="line.278"></a>
-<span class="sourceLineNo">279</span> /**<a name="line.279"></a>
-<span class="sourceLineNo">280</span> * This message intends to inform the MemStore that the replaying edits from WAL<a name="line.280"></a>
-<span class="sourceLineNo">281</span> * are done<a name="line.281"></a>
-<span class="sourceLineNo">282</span> */<a name="line.282"></a>
-<span class="sourceLineNo">283</span> @Override<a name="line.283"></a>
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-<span class="sourceLineNo">290</span> @Override<a name="line.290"></a>
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-<span class="sourceLineNo">293</span> List<Segment> list = new ArrayList<>(pipelineList.size() + 2);<a name="line.293"></a>
-<span class="sourceLineNo">294</span> list.add(this.active);<a name="line.294"></a>
-<span class="sourceLineNo">295</span> list.addAll(pipelineList);<a name="line.295"></a>
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-<span class="sourceLineNo">297</span><a name="line.297"></a>
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-<span class="sourceLineNo">302</span> public void setCompositeSnapshot(boolean useCompositeSnapshot) {<a name="line.302"></a>
-<span class="sourceLineNo">303</span> this.compositeSnapshot = useCompositeSnapshot;<a name="line.303"></a>
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-<span class="sourceLineNo">308</span> // last true stands for updating the region size<a name="line.308"></a>
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-<span class="sourceLineNo">313</span> * @param requesterVersion The caller must hold the VersionedList of the pipeline<a name="line.313"></a>
-<span class="sourceLineNo">314</span> * with version taken earlier. This version must be passed as a parameter here.<a name="line.314"></a>
-<span class="sourceLineNo">315</span> * The flattening happens only if versions match.<a name="line.315"></a>
-<span class="sourceLineNo">316</span> */<a name="line.316"></a>
-<span class="sourceLineNo">317</span> public void flattenOneSegment(long requesterVersion, MemStoreCompactionStrategy.Action action) {<a name="line.317"></a>
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-<span class="sourceLineNo">337</span><a name="line.337"></a>
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-<span class="sourceLineNo">347</span> return store;<a name="line.347"></a>
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-<span class="sourceLineNo">351</span> return Bytes.toString(getFamilyNameInBytes());<a name="line.351"></a>
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-<span class="sourceLineNo">356</span> * Scanners are ordered from 0 (oldest) to newest in increasing order.<a name="line.356"></a>
-<span class="sourceLineNo">357</span> */<a name="line.357"></a>
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