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 2018/08/23 14:48:00 UTC
[32/51] [partial] hbase-site git commit: Published site at
6a5b4f2a5c188f8eef4f2250b8b7db7dd1e750e4.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/1ff05a18/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/CompactingMemStore.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/CompactingMemStore.html b/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/CompactingMemStore.html
index bf6738e..a62d84e 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/CompactingMemStore.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/CompactingMemStore.html
@@ -74,569 +74,568 @@
<span class="sourceLineNo">066</span><a name="line.66"></a>
<span class="sourceLineNo">067</span> private static final Logger LOG = LoggerFactory.getLogger(CompactingMemStore.class);<a name="line.67"></a>
<span class="sourceLineNo">068</span> private HStore store;<a name="line.68"></a>
-<span class="sourceLineNo">069</span> private RegionServicesForStores regionServices;<a name="line.69"></a>
-<span class="sourceLineNo">070</span> private CompactionPipeline pipeline;<a name="line.70"></a>
-<span class="sourceLineNo">071</span> protected MemStoreCompactor compactor;<a name="line.71"></a>
-<span class="sourceLineNo">072</span><a name="line.72"></a>
-<span class="sourceLineNo">073</span> private long inmemoryFlushSize; // the threshold on active size for in-memory flush<a name="line.73"></a>
-<span class="sourceLineNo">074</span> private final AtomicBoolean inMemoryCompactionInProgress = new AtomicBoolean(false);<a name="line.74"></a>
-<span class="sourceLineNo">075</span><a name="line.75"></a>
-<span class="sourceLineNo">076</span> // inWalReplay is true while we are synchronously replaying the edits from WAL<a name="line.76"></a>
-<span class="sourceLineNo">077</span> private boolean inWalReplay = false;<a name="line.77"></a>
-<span class="sourceLineNo">078</span><a name="line.78"></a>
-<span class="sourceLineNo">079</span> @VisibleForTesting<a name="line.79"></a>
-<span class="sourceLineNo">080</span> protected final AtomicBoolean allowCompaction = new AtomicBoolean(true);<a name="line.80"></a>
-<span class="sourceLineNo">081</span> private boolean compositeSnapshot = true;<a name="line.81"></a>
-<span class="sourceLineNo">082</span><a name="line.82"></a>
-<span class="sourceLineNo">083</span> /**<a name="line.83"></a>
-<span class="sourceLineNo">084</span> * Types of indexes (part of immutable segments) to be used after flattening,<a name="line.84"></a>
-<span class="sourceLineNo">085</span> * compaction, or merge are applied.<a name="line.85"></a>
-<span class="sourceLineNo">086</span> */<a name="line.86"></a>
-<span class="sourceLineNo">087</span> public enum IndexType {<a name="line.87"></a>
-<span class="sourceLineNo">088</span> CSLM_MAP, // ConcurrentSkipLisMap<a name="line.88"></a>
-<span class="sourceLineNo">089</span> ARRAY_MAP, // CellArrayMap<a name="line.89"></a>
-<span class="sourceLineNo">090</span> CHUNK_MAP // CellChunkMap<a name="line.90"></a>
-<span class="sourceLineNo">091</span> }<a name="line.91"></a>
-<span class="sourceLineNo">092</span><a name="line.92"></a>
-<span class="sourceLineNo">093</span> private IndexType indexType = IndexType.ARRAY_MAP; // default implementation<a name="line.93"></a>
-<span class="sourceLineNo">094</span><a name="line.94"></a>
-<span class="sourceLineNo">095</span> public static final long DEEP_OVERHEAD = ClassSize.align( AbstractMemStore.DEEP_OVERHEAD<a name="line.95"></a>
-<span class="sourceLineNo">096</span> + 7 * ClassSize.REFERENCE // Store, RegionServicesForStores, CompactionPipeline,<a name="line.96"></a>
-<span class="sourceLineNo">097</span> // MemStoreCompactor, inMemoryCompactionInProgress,<a name="line.97"></a>
-<span class="sourceLineNo">098</span> // allowCompaction, indexType<a name="line.98"></a>
-<span class="sourceLineNo">099</span> + Bytes.SIZEOF_LONG // inmemoryFlushSize<a name="line.99"></a>
-<span class="sourceLineNo">100</span> + 2 * Bytes.SIZEOF_BOOLEAN // compositeSnapshot and inWalReplay<a name="line.100"></a>
-<span class="sourceLineNo">101</span> + 2 * ClassSize.ATOMIC_BOOLEAN// inMemoryCompactionInProgress and allowCompaction<a name="line.101"></a>
-<span class="sourceLineNo">102</span> + CompactionPipeline.DEEP_OVERHEAD + MemStoreCompactor.DEEP_OVERHEAD);<a name="line.102"></a>
-<span class="sourceLineNo">103</span><a name="line.103"></a>
-<span class="sourceLineNo">104</span> public CompactingMemStore(Configuration conf, CellComparator c,<a name="line.104"></a>
-<span class="sourceLineNo">105</span> HStore store, RegionServicesForStores regionServices,<a name="line.105"></a>
-<span class="sourceLineNo">106</span> MemoryCompactionPolicy compactionPolicy) throws IOException {<a name="line.106"></a>
-<span class="sourceLineNo">107</span> super(conf, c);<a name="line.107"></a>
-<span class="sourceLineNo">108</span> this.store = store;<a name="line.108"></a>
-<span class="sourceLineNo">109</span> this.regionServices = regionServices;<a name="line.109"></a>
-<span class="sourceLineNo">110</span> this.pipeline = new CompactionPipeline(getRegionServices());<a name="line.110"></a>
-<span class="sourceLineNo">111</span> this.compactor = createMemStoreCompactor(compactionPolicy);<a name="line.111"></a>
-<span class="sourceLineNo">112</span> if (conf.getBoolean(MemStoreLAB.USEMSLAB_KEY, MemStoreLAB.USEMSLAB_DEFAULT)) {<a name="line.112"></a>
-<span class="sourceLineNo">113</span> // if user requested to work with MSLABs (whether on- or off-heap), then the<a name="line.113"></a>
-<span class="sourceLineNo">114</span> // immutable segments are going to use CellChunkMap as their index<a name="line.114"></a>
-<span class="sourceLineNo">115</span> indexType = IndexType.CHUNK_MAP;<a name="line.115"></a>
-<span class="sourceLineNo">116</span> } else {<a name="line.116"></a>
-<span class="sourceLineNo">117</span> indexType = IndexType.ARRAY_MAP;<a name="line.117"></a>
-<span class="sourceLineNo">118</span> }<a name="line.118"></a>
-<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> LOG.info("Store={}, in-memory flush size threshold={}, immutable segments index type={}, " +<a name="line.122"></a>
-<span class="sourceLineNo">123</span> "compactor={}", this.store.getColumnFamilyName(),<a name="line.123"></a>
-<span class="sourceLineNo">124</span> StringUtils.byteDesc(this.inmemoryFlushSize), this.indexType,<a name="line.124"></a>
-<span class="sourceLineNo">125</span> (this.compactor == null? "NULL": this.compactor.toString()));<a name="line.125"></a>
-<span class="sourceLineNo">126</span> }<a name="line.126"></a>
-<span class="sourceLineNo">127</span><a name="line.127"></a>
-<span class="sourceLineNo">128</span> @VisibleForTesting<a name="line.128"></a>
-<span class="sourceLineNo">129</span> protected MemStoreCompactor createMemStoreCompactor(MemoryCompactionPolicy compactionPolicy)<a name="line.129"></a>
-<span class="sourceLineNo">130</span> throws IllegalArgumentIOException {<a name="line.130"></a>
-<span class="sourceLineNo">131</span> return new MemStoreCompactor(this, compactionPolicy);<a name="line.131"></a>
-<span class="sourceLineNo">132</span> }<a name="line.132"></a>
-<span class="sourceLineNo">133</span><a name="line.133"></a>
-<span class="sourceLineNo">134</span> private void initInmemoryFlushSize(Configuration conf) {<a name="line.134"></a>
-<span class="sourceLineNo">135</span> double factor = 0;<a name="line.135"></a>
-<span class="sourceLineNo">136</span> long memstoreFlushSize = getRegionServices().getMemStoreFlushSize();<a name="line.136"></a>
-<span class="sourceLineNo">137</span> int numStores = getRegionServices().getNumStores();<a name="line.137"></a>
-<span class="sourceLineNo">138</span> if (numStores <= 1) {<a name="line.138"></a>
-<span class="sourceLineNo">139</span> // Family number might also be zero in some of our unit test case<a name="line.139"></a>
-<span class="sourceLineNo">140</span> numStores = 1;<a name="line.140"></a>
-<span class="sourceLineNo">141</span> }<a name="line.141"></a>
-<span class="sourceLineNo">142</span> factor = conf.getDouble(IN_MEMORY_FLUSH_THRESHOLD_FACTOR_KEY, 0.0);<a name="line.142"></a>
-<span class="sourceLineNo">143</span> if(factor != 0.0) {<a name="line.143"></a>
-<span class="sourceLineNo">144</span> // multiply by a factor (the same factor for all index types)<a name="line.144"></a>
-<span class="sourceLineNo">145</span> inmemoryFlushSize = (long) (factor * memstoreFlushSize) / numStores;<a name="line.145"></a>
-<span class="sourceLineNo">146</span> } else {<a name="line.146"></a>
-<span class="sourceLineNo">147</span> inmemoryFlushSize = IN_MEMORY_FLUSH_MULTIPLIER *<a name="line.147"></a>
-<span class="sourceLineNo">148</span> conf.getLong(MemStoreLAB.CHUNK_SIZE_KEY, MemStoreLAB.CHUNK_SIZE_DEFAULT);<a name="line.148"></a>
-<span class="sourceLineNo">149</span> inmemoryFlushSize -= ChunkCreator.SIZEOF_CHUNK_HEADER;<a name="line.149"></a>
-<span class="sourceLineNo">150</span> }<a name="line.150"></a>
-<span class="sourceLineNo">151</span> }<a name="line.151"></a>
-<span class="sourceLineNo">152</span><a name="line.152"></a>
-<span class="sourceLineNo">153</span> /**<a name="line.153"></a>
-<span class="sourceLineNo">154</span> * @return Total memory occupied by this MemStore. This won't include any size occupied by the<a name="line.154"></a>
-<span class="sourceLineNo">155</span> * snapshot. We assume the snapshot will get cleared soon. This is not thread safe and<a name="line.155"></a>
-<span class="sourceLineNo">156</span> * the memstore may be changed while computing its size. It is the responsibility of the<a name="line.156"></a>
-<span class="sourceLineNo">157</span> * caller to make sure this doesn't happen.<a name="line.157"></a>
-<span class="sourceLineNo">158</span> */<a name="line.158"></a>
-<span class="sourceLineNo">159</span> @Override<a name="line.159"></a>
-<span class="sourceLineNo">160</span> public MemStoreSize size() {<a name="line.160"></a>
-<span class="sourceLineNo">161</span> MemStoreSizing memstoreSizing = new NonThreadSafeMemStoreSizing();<a name="line.161"></a>
-<span class="sourceLineNo">162</span> memstoreSizing.incMemStoreSize(getActive().getMemStoreSize());<a name="line.162"></a>
-<span class="sourceLineNo">163</span> for (Segment item : pipeline.getSegments()) {<a name="line.163"></a>
-<span class="sourceLineNo">164</span> memstoreSizing.incMemStoreSize(item.getMemStoreSize());<a name="line.164"></a>
-<span class="sourceLineNo">165</span> }<a name="line.165"></a>
-<span class="sourceLineNo">166</span> return memstoreSizing.getMemStoreSize();<a name="line.166"></a>
-<span class="sourceLineNo">167</span> }<a name="line.167"></a>
-<span class="sourceLineNo">168</span><a name="line.168"></a>
-<span class="sourceLineNo">169</span> /**<a name="line.169"></a>
-<span class="sourceLineNo">170</span> * This method is called before the flush is executed.<a name="line.170"></a>
-<span class="sourceLineNo">171</span> * @return an estimation (lower bound) of the unflushed sequence id in memstore after the flush<a name="line.171"></a>
-<span class="sourceLineNo">172</span> * is executed. if memstore will be cleared returns {@code HConstants.NO_SEQNUM}.<a name="line.172"></a>
-<span class="sourceLineNo">173</span> */<a name="line.173"></a>
-<span class="sourceLineNo">174</span> @Override<a name="line.174"></a>
-<span class="sourceLineNo">175</span> public long preFlushSeqIDEstimation() {<a name="line.175"></a>
-<span class="sourceLineNo">176</span> if(compositeSnapshot) {<a name="line.176"></a>
-<span class="sourceLineNo">177</span> return HConstants.NO_SEQNUM;<a name="line.177"></a>
-<span class="sourceLineNo">178</span> }<a name="line.178"></a>
-<span class="sourceLineNo">179</span> Segment segment = getLastSegment();<a name="line.179"></a>
-<span class="sourceLineNo">180</span> if(segment == null) {<a name="line.180"></a>
-<span class="sourceLineNo">181</span> return HConstants.NO_SEQNUM;<a name="line.181"></a>
-<span class="sourceLineNo">182</span> }<a name="line.182"></a>
-<span class="sourceLineNo">183</span> return segment.getMinSequenceId();<a name="line.183"></a>
-<span class="sourceLineNo">184</span> }<a name="line.184"></a>
-<span class="sourceLineNo">185</span><a name="line.185"></a>
-<span class="sourceLineNo">186</span> @Override<a name="line.186"></a>
-<span class="sourceLineNo">187</span> public boolean isSloppy() {<a name="line.187"></a>
-<span class="sourceLineNo">188</span> return true;<a name="line.188"></a>
-<span class="sourceLineNo">189</span> }<a name="line.189"></a>
-<span class="sourceLineNo">190</span><a name="line.190"></a>
-<span class="sourceLineNo">191</span> /**<a name="line.191"></a>
-<span class="sourceLineNo">192</span> * Push the current active memstore segment into the pipeline<a name="line.192"></a>
-<span class="sourceLineNo">193</span> * and create a snapshot of the tail of current compaction pipeline<a name="line.193"></a>
-<span class="sourceLineNo">194</span> * Snapshot must be cleared by call to {@link #clearSnapshot}.<a name="line.194"></a>
-<span class="sourceLineNo">195</span> * {@link #clearSnapshot(long)}.<a name="line.195"></a>
-<span class="sourceLineNo">196</span> * @return {@link MemStoreSnapshot}<a name="line.196"></a>
-<span class="sourceLineNo">197</span> */<a name="line.197"></a>
-<span class="sourceLineNo">198</span> @Override<a name="line.198"></a>
-<span class="sourceLineNo">199</span> public MemStoreSnapshot snapshot() {<a name="line.199"></a>
-<span class="sourceLineNo">200</span> // If snapshot currently has entries, then flusher failed or didn't call<a name="line.200"></a>
-<span class="sourceLineNo">201</span> // cleanup. Log a warning.<a name="line.201"></a>
-<span class="sourceLineNo">202</span> if (!this.snapshot.isEmpty()) {<a name="line.202"></a>
-<span class="sourceLineNo">203</span> LOG.warn("Snapshot called again without clearing previous. " +<a name="line.203"></a>
-<span class="sourceLineNo">204</span> "Doing nothing. Another ongoing flush or did we fail last attempt?");<a name="line.204"></a>
-<span class="sourceLineNo">205</span> } else {<a name="line.205"></a>
-<span class="sourceLineNo">206</span> LOG.debug("FLUSHING TO DISK {}, store={}",<a name="line.206"></a>
-<span class="sourceLineNo">207</span> getRegionServices().getRegionInfo().getEncodedName(), getFamilyName());<a name="line.207"></a>
-<span class="sourceLineNo">208</span> stopCompaction();<a name="line.208"></a>
-<span class="sourceLineNo">209</span> // region level lock ensures pushing active to pipeline is done in isolation<a name="line.209"></a>
-<span class="sourceLineNo">210</span> // no concurrent update operations trying to flush the active segment<a name="line.210"></a>
-<span class="sourceLineNo">211</span> pushActiveToPipeline(getActive());<a name="line.211"></a>
-<span class="sourceLineNo">212</span> snapshotId = EnvironmentEdgeManager.currentTime();<a name="line.212"></a>
-<span class="sourceLineNo">213</span> // in both cases whatever is pushed to snapshot is cleared from the pipeline<a name="line.213"></a>
-<span class="sourceLineNo">214</span> if (compositeSnapshot) {<a name="line.214"></a>
-<span class="sourceLineNo">215</span> pushPipelineToSnapshot();<a name="line.215"></a>
-<span class="sourceLineNo">216</span> } else {<a name="line.216"></a>
-<span class="sourceLineNo">217</span> pushTailToSnapshot();<a name="line.217"></a>
-<span class="sourceLineNo">218</span> }<a name="line.218"></a>
-<span class="sourceLineNo">219</span> compactor.resetStats();<a name="line.219"></a>
-<span class="sourceLineNo">220</span> }<a name="line.220"></a>
-<span class="sourceLineNo">221</span> return new MemStoreSnapshot(snapshotId, this.snapshot);<a name="line.221"></a>
-<span class="sourceLineNo">222</span> }<a name="line.222"></a>
-<span class="sourceLineNo">223</span><a name="line.223"></a>
-<span class="sourceLineNo">224</span> @Override<a name="line.224"></a>
-<span class="sourceLineNo">225</span> public MemStoreSize getFlushableSize() {<a name="line.225"></a>
-<span class="sourceLineNo">226</span> MemStoreSize mss = getSnapshotSize();<a name="line.226"></a>
-<span class="sourceLineNo">227</span> if (mss.getDataSize() == 0) {<a name="line.227"></a>
-<span class="sourceLineNo">228</span> // if snapshot is empty the tail of the pipeline (or everything in the memstore) is flushed<a name="line.228"></a>
-<span class="sourceLineNo">229</span> if (compositeSnapshot) {<a name="line.229"></a>
-<span class="sourceLineNo">230</span> MemStoreSizing memStoreSizing = new NonThreadSafeMemStoreSizing(pipeline.getPipelineSize());<a name="line.230"></a>
-<span class="sourceLineNo">231</span> MutableSegment currActive = getActive();<a name="line.231"></a>
-<span class="sourceLineNo">232</span> if(!currActive.isEmpty()) {<a name="line.232"></a>
-<span class="sourceLineNo">233</span> memStoreSizing.incMemStoreSize(currActive.getMemStoreSize());<a name="line.233"></a>
-<span class="sourceLineNo">234</span> }<a name="line.234"></a>
-<span class="sourceLineNo">235</span> mss = memStoreSizing.getMemStoreSize();<a name="line.235"></a>
-<span class="sourceLineNo">236</span> } else {<a name="line.236"></a>
-<span class="sourceLineNo">237</span> mss = pipeline.getTailSize();<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> return mss.getDataSize() > 0? mss: getActive().getMemStoreSize();<a name="line.240"></a>
-<span class="sourceLineNo">241</span> }<a name="line.241"></a>
+<span class="sourceLineNo">069</span> private CompactionPipeline pipeline;<a name="line.69"></a>
+<span class="sourceLineNo">070</span> protected MemStoreCompactor compactor;<a name="line.70"></a>
+<span class="sourceLineNo">071</span><a name="line.71"></a>
+<span class="sourceLineNo">072</span> private long inmemoryFlushSize; // the threshold on active size for in-memory flush<a name="line.72"></a>
+<span class="sourceLineNo">073</span> private final AtomicBoolean inMemoryCompactionInProgress = new AtomicBoolean(false);<a name="line.73"></a>
+<span class="sourceLineNo">074</span><a name="line.74"></a>
+<span class="sourceLineNo">075</span> // inWalReplay is true while we are synchronously replaying the edits from WAL<a name="line.75"></a>
+<span class="sourceLineNo">076</span> private boolean inWalReplay = false;<a name="line.76"></a>
+<span class="sourceLineNo">077</span><a name="line.77"></a>
+<span class="sourceLineNo">078</span> @VisibleForTesting<a name="line.78"></a>
+<span class="sourceLineNo">079</span> protected final AtomicBoolean allowCompaction = new AtomicBoolean(true);<a name="line.79"></a>
+<span class="sourceLineNo">080</span> private boolean compositeSnapshot = true;<a name="line.80"></a>
+<span class="sourceLineNo">081</span><a name="line.81"></a>
+<span class="sourceLineNo">082</span> /**<a name="line.82"></a>
+<span class="sourceLineNo">083</span> * Types of indexes (part of immutable segments) to be used after flattening,<a name="line.83"></a>
+<span class="sourceLineNo">084</span> * compaction, or merge are applied.<a name="line.84"></a>
+<span class="sourceLineNo">085</span> */<a name="line.85"></a>
+<span class="sourceLineNo">086</span> public enum IndexType {<a name="line.86"></a>
+<span class="sourceLineNo">087</span> CSLM_MAP, // ConcurrentSkipLisMap<a name="line.87"></a>
+<span class="sourceLineNo">088</span> ARRAY_MAP, // CellArrayMap<a name="line.88"></a>
+<span class="sourceLineNo">089</span> CHUNK_MAP // CellChunkMap<a name="line.89"></a>
+<span class="sourceLineNo">090</span> }<a name="line.90"></a>
+<span class="sourceLineNo">091</span><a name="line.91"></a>
+<span class="sourceLineNo">092</span> private IndexType indexType = IndexType.ARRAY_MAP; // default implementation<a name="line.92"></a>
+<span class="sourceLineNo">093</span><a name="line.93"></a>
+<span class="sourceLineNo">094</span> public static final long DEEP_OVERHEAD = ClassSize.align( AbstractMemStore.DEEP_OVERHEAD<a name="line.94"></a>
+<span class="sourceLineNo">095</span> + 6 * ClassSize.REFERENCE // Store, CompactionPipeline,<a name="line.95"></a>
+<span class="sourceLineNo">096</span> // MemStoreCompactor, inMemoryCompactionInProgress,<a name="line.96"></a>
+<span class="sourceLineNo">097</span> // allowCompaction, indexType<a name="line.97"></a>
+<span class="sourceLineNo">098</span> + Bytes.SIZEOF_LONG // inmemoryFlushSize<a name="line.98"></a>
+<span class="sourceLineNo">099</span> + 2 * Bytes.SIZEOF_BOOLEAN // compositeSnapshot and inWalReplay<a name="line.99"></a>
+<span class="sourceLineNo">100</span> + 2 * ClassSize.ATOMIC_BOOLEAN// inMemoryCompactionInProgress and allowCompaction<a name="line.100"></a>
+<span class="sourceLineNo">101</span> + CompactionPipeline.DEEP_OVERHEAD + MemStoreCompactor.DEEP_OVERHEAD);<a name="line.101"></a>
+<span class="sourceLineNo">102</span><a name="line.102"></a>
+<span class="sourceLineNo">103</span> public CompactingMemStore(Configuration conf, CellComparator c,<a name="line.103"></a>
+<span class="sourceLineNo">104</span> HStore store, RegionServicesForStores regionServices,<a name="line.104"></a>
+<span class="sourceLineNo">105</span> MemoryCompactionPolicy compactionPolicy) throws IOException {<a name="line.105"></a>
+<span class="sourceLineNo">106</span> super(conf, c, regionServices);<a name="line.106"></a>
+<span class="sourceLineNo">107</span> this.store = store;<a name="line.107"></a>
+<span class="sourceLineNo">108</span> this.regionServices = regionServices;<a name="line.108"></a>
+<span class="sourceLineNo">109</span> this.pipeline = new CompactionPipeline(getRegionServices());<a name="line.109"></a>
+<span class="sourceLineNo">110</span> this.compactor = createMemStoreCompactor(compactionPolicy);<a name="line.110"></a>
+<span class="sourceLineNo">111</span> if (conf.getBoolean(MemStoreLAB.USEMSLAB_KEY, MemStoreLAB.USEMSLAB_DEFAULT)) {<a name="line.111"></a>
+<span class="sourceLineNo">112</span> // if user requested to work with MSLABs (whether on- or off-heap), then the<a name="line.112"></a>
+<span class="sourceLineNo">113</span> // immutable segments are going to use CellChunkMap as their index<a name="line.113"></a>
+<span class="sourceLineNo">114</span> indexType = IndexType.CHUNK_MAP;<a name="line.114"></a>
+<span class="sourceLineNo">115</span> } else {<a name="line.115"></a>
+<span class="sourceLineNo">116</span> indexType = IndexType.ARRAY_MAP;<a name="line.116"></a>
+<span class="sourceLineNo">117</span> }<a name="line.117"></a>
+<span class="sourceLineNo">118</span> // initialization of the flush size should happen after initialization of the index type<a name="line.118"></a>
+<span class="sourceLineNo">119</span> // so do not transfer the following method<a name="line.119"></a>
+<span class="sourceLineNo">120</span> initInmemoryFlushSize(conf);<a name="line.120"></a>
+<span class="sourceLineNo">121</span> LOG.info("Store={}, in-memory flush size threshold={}, immutable segments index type={}, " +<a name="line.121"></a>
+<span class="sourceLineNo">122</span> "compactor={}", this.store.getColumnFamilyName(),<a name="line.122"></a>
+<span class="sourceLineNo">123</span> StringUtils.byteDesc(this.inmemoryFlushSize), this.indexType,<a name="line.123"></a>
+<span class="sourceLineNo">124</span> (this.compactor == null? "NULL": this.compactor.toString()));<a name="line.124"></a>
+<span class="sourceLineNo">125</span> }<a name="line.125"></a>
+<span class="sourceLineNo">126</span><a name="line.126"></a>
+<span class="sourceLineNo">127</span> @VisibleForTesting<a name="line.127"></a>
+<span class="sourceLineNo">128</span> protected MemStoreCompactor createMemStoreCompactor(MemoryCompactionPolicy compactionPolicy)<a name="line.128"></a>
+<span class="sourceLineNo">129</span> throws IllegalArgumentIOException {<a name="line.129"></a>
+<span class="sourceLineNo">130</span> return new MemStoreCompactor(this, compactionPolicy);<a name="line.130"></a>
+<span class="sourceLineNo">131</span> }<a name="line.131"></a>
+<span class="sourceLineNo">132</span><a name="line.132"></a>
+<span class="sourceLineNo">133</span> private void initInmemoryFlushSize(Configuration conf) {<a name="line.133"></a>
+<span class="sourceLineNo">134</span> double factor = 0;<a name="line.134"></a>
+<span class="sourceLineNo">135</span> long memstoreFlushSize = getRegionServices().getMemStoreFlushSize();<a name="line.135"></a>
+<span class="sourceLineNo">136</span> int numStores = getRegionServices().getNumStores();<a name="line.136"></a>
+<span class="sourceLineNo">137</span> if (numStores <= 1) {<a name="line.137"></a>
+<span class="sourceLineNo">138</span> // Family number might also be zero in some of our unit test case<a name="line.138"></a>
+<span class="sourceLineNo">139</span> numStores = 1;<a name="line.139"></a>
+<span class="sourceLineNo">140</span> }<a name="line.140"></a>
+<span class="sourceLineNo">141</span> factor = conf.getDouble(IN_MEMORY_FLUSH_THRESHOLD_FACTOR_KEY, 0.0);<a name="line.141"></a>
+<span class="sourceLineNo">142</span> if(factor != 0.0) {<a name="line.142"></a>
+<span class="sourceLineNo">143</span> // multiply by a factor (the same factor for all index types)<a name="line.143"></a>
+<span class="sourceLineNo">144</span> inmemoryFlushSize = (long) (factor * memstoreFlushSize) / numStores;<a name="line.144"></a>
+<span class="sourceLineNo">145</span> } else {<a name="line.145"></a>
+<span class="sourceLineNo">146</span> inmemoryFlushSize = IN_MEMORY_FLUSH_MULTIPLIER *<a name="line.146"></a>
+<span class="sourceLineNo">147</span> conf.getLong(MemStoreLAB.CHUNK_SIZE_KEY, MemStoreLAB.CHUNK_SIZE_DEFAULT);<a name="line.147"></a>
+<span class="sourceLineNo">148</span> inmemoryFlushSize -= ChunkCreator.SIZEOF_CHUNK_HEADER;<a name="line.148"></a>
+<span class="sourceLineNo">149</span> }<a name="line.149"></a>
+<span class="sourceLineNo">150</span> }<a name="line.150"></a>
+<span class="sourceLineNo">151</span><a name="line.151"></a>
+<span class="sourceLineNo">152</span> /**<a name="line.152"></a>
+<span class="sourceLineNo">153</span> * @return Total memory occupied by this MemStore. This won't include any size occupied by the<a name="line.153"></a>
+<span class="sourceLineNo">154</span> * snapshot. We assume the snapshot will get cleared soon. This is not thread safe and<a name="line.154"></a>
+<span class="sourceLineNo">155</span> * the memstore may be changed while computing its size. It is the responsibility of the<a name="line.155"></a>
+<span class="sourceLineNo">156</span> * caller to make sure this doesn't happen.<a name="line.156"></a>
+<span class="sourceLineNo">157</span> */<a name="line.157"></a>
+<span class="sourceLineNo">158</span> @Override<a name="line.158"></a>
+<span class="sourceLineNo">159</span> public MemStoreSize size() {<a name="line.159"></a>
+<span class="sourceLineNo">160</span> MemStoreSizing memstoreSizing = new NonThreadSafeMemStoreSizing();<a name="line.160"></a>
+<span class="sourceLineNo">161</span> memstoreSizing.incMemStoreSize(getActive().getMemStoreSize());<a name="line.161"></a>
+<span class="sourceLineNo">162</span> for (Segment item : pipeline.getSegments()) {<a name="line.162"></a>
+<span class="sourceLineNo">163</span> memstoreSizing.incMemStoreSize(item.getMemStoreSize());<a name="line.163"></a>
+<span class="sourceLineNo">164</span> }<a name="line.164"></a>
+<span class="sourceLineNo">165</span> return memstoreSizing.getMemStoreSize();<a name="line.165"></a>
+<span class="sourceLineNo">166</span> }<a name="line.166"></a>
+<span class="sourceLineNo">167</span><a name="line.167"></a>
+<span class="sourceLineNo">168</span> /**<a name="line.168"></a>
+<span class="sourceLineNo">169</span> * This method is called before the flush is executed.<a name="line.169"></a>
+<span class="sourceLineNo">170</span> * @return an estimation (lower bound) of the unflushed sequence id in memstore after the flush<a name="line.170"></a>
+<span class="sourceLineNo">171</span> * is executed. if memstore will be cleared returns {@code HConstants.NO_SEQNUM}.<a name="line.171"></a>
+<span class="sourceLineNo">172</span> */<a name="line.172"></a>
+<span class="sourceLineNo">173</span> @Override<a name="line.173"></a>
+<span class="sourceLineNo">174</span> public long preFlushSeqIDEstimation() {<a name="line.174"></a>
+<span class="sourceLineNo">175</span> if(compositeSnapshot) {<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> Segment segment = getLastSegment();<a name="line.178"></a>
+<span class="sourceLineNo">179</span> if(segment == null) {<a name="line.179"></a>
+<span class="sourceLineNo">180</span> return HConstants.NO_SEQNUM;<a name="line.180"></a>
+<span class="sourceLineNo">181</span> }<a name="line.181"></a>
+<span class="sourceLineNo">182</span> return segment.getMinSequenceId();<a name="line.182"></a>
+<span class="sourceLineNo">183</span> }<a name="line.183"></a>
+<span class="sourceLineNo">184</span><a name="line.184"></a>
+<span class="sourceLineNo">185</span> @Override<a name="line.185"></a>
+<span class="sourceLineNo">186</span> public boolean isSloppy() {<a name="line.186"></a>
+<span class="sourceLineNo">187</span> return true;<a name="line.187"></a>
+<span class="sourceLineNo">188</span> }<a name="line.188"></a>
+<span class="sourceLineNo">189</span><a name="line.189"></a>
+<span class="sourceLineNo">190</span> /**<a name="line.190"></a>
+<span class="sourceLineNo">191</span> * Push the current active memstore segment into the pipeline<a name="line.191"></a>
+<span class="sourceLineNo">192</span> * and create a snapshot of the tail of current compaction pipeline<a name="line.192"></a>
+<span class="sourceLineNo">193</span> * Snapshot must be cleared by call to {@link #clearSnapshot}.<a name="line.193"></a>
+<span class="sourceLineNo">194</span> * {@link #clearSnapshot(long)}.<a name="line.194"></a>
+<span class="sourceLineNo">195</span> * @return {@link MemStoreSnapshot}<a name="line.195"></a>
+<span class="sourceLineNo">196</span> */<a name="line.196"></a>
+<span class="sourceLineNo">197</span> @Override<a name="line.197"></a>
+<span class="sourceLineNo">198</span> public MemStoreSnapshot snapshot() {<a name="line.198"></a>
+<span class="sourceLineNo">199</span> // If snapshot currently has entries, then flusher failed or didn't call<a name="line.199"></a>
+<span class="sourceLineNo">200</span> // cleanup. Log a warning.<a name="line.200"></a>
+<span class="sourceLineNo">201</span> if (!this.snapshot.isEmpty()) {<a name="line.201"></a>
+<span class="sourceLineNo">202</span> LOG.warn("Snapshot called again without clearing previous. " +<a name="line.202"></a>
+<span class="sourceLineNo">203</span> "Doing nothing. Another ongoing flush or did we fail last attempt?");<a name="line.203"></a>
+<span class="sourceLineNo">204</span> } else {<a name="line.204"></a>
+<span class="sourceLineNo">205</span> LOG.debug("FLUSHING TO DISK {}, store={}",<a name="line.205"></a>
+<span class="sourceLineNo">206</span> getRegionServices().getRegionInfo().getEncodedName(), getFamilyName());<a name="line.206"></a>
+<span class="sourceLineNo">207</span> stopCompaction();<a name="line.207"></a>
+<span class="sourceLineNo">208</span> // region level lock ensures pushing active to pipeline is done in isolation<a name="line.208"></a>
+<span class="sourceLineNo">209</span> // no concurrent update operations trying to flush the active segment<a name="line.209"></a>
+<span class="sourceLineNo">210</span> pushActiveToPipeline(getActive());<a name="line.210"></a>
+<span class="sourceLineNo">211</span> snapshotId = EnvironmentEdgeManager.currentTime();<a name="line.211"></a>
+<span class="sourceLineNo">212</span> // in both cases whatever is pushed to snapshot is cleared from the pipeline<a name="line.212"></a>
+<span class="sourceLineNo">213</span> if (compositeSnapshot) {<a name="line.213"></a>
+<span class="sourceLineNo">214</span> pushPipelineToSnapshot();<a name="line.214"></a>
+<span class="sourceLineNo">215</span> } else {<a name="line.215"></a>
+<span class="sourceLineNo">216</span> pushTailToSnapshot();<a name="line.216"></a>
+<span class="sourceLineNo">217</span> }<a name="line.217"></a>
+<span class="sourceLineNo">218</span> compactor.resetStats();<a name="line.218"></a>
+<span class="sourceLineNo">219</span> }<a name="line.219"></a>
+<span class="sourceLineNo">220</span> return new MemStoreSnapshot(snapshotId, this.snapshot);<a name="line.220"></a>
+<span class="sourceLineNo">221</span> }<a name="line.221"></a>
+<span class="sourceLineNo">222</span><a name="line.222"></a>
+<span class="sourceLineNo">223</span> @Override<a name="line.223"></a>
+<span class="sourceLineNo">224</span> public MemStoreSize getFlushableSize() {<a name="line.224"></a>
+<span class="sourceLineNo">225</span> MemStoreSize mss = getSnapshotSize();<a name="line.225"></a>
+<span class="sourceLineNo">226</span> if (mss.getDataSize() == 0) {<a name="line.226"></a>
+<span class="sourceLineNo">227</span> // if snapshot is empty the tail of the pipeline (or everything in the memstore) is flushed<a name="line.227"></a>
+<span class="sourceLineNo">228</span> if (compositeSnapshot) {<a name="line.228"></a>
+<span class="sourceLineNo">229</span> MemStoreSizing memStoreSizing = new NonThreadSafeMemStoreSizing(pipeline.getPipelineSize());<a name="line.229"></a>
+<span class="sourceLineNo">230</span> MutableSegment currActive = getActive();<a name="line.230"></a>
+<span class="sourceLineNo">231</span> if(!currActive.isEmpty()) {<a name="line.231"></a>
+<span class="sourceLineNo">232</span> memStoreSizing.incMemStoreSize(currActive.getMemStoreSize());<a name="line.232"></a>
+<span class="sourceLineNo">233</span> }<a name="line.233"></a>
+<span class="sourceLineNo">234</span> mss = memStoreSizing.getMemStoreSize();<a name="line.234"></a>
+<span class="sourceLineNo">235</span> } else {<a name="line.235"></a>
+<span class="sourceLineNo">236</span> mss = pipeline.getTailSize();<a name="line.236"></a>
+<span class="sourceLineNo">237</span> }<a name="line.237"></a>
+<span class="sourceLineNo">238</span> }<a name="line.238"></a>
+<span class="sourceLineNo">239</span> return mss.getDataSize() > 0? mss: getActive().getMemStoreSize();<a name="line.239"></a>
+<span class="sourceLineNo">240</span> }<a name="line.240"></a>
+<span class="sourceLineNo">241</span><a name="line.241"></a>
<span class="sourceLineNo">242</span><a name="line.242"></a>
-<span class="sourceLineNo">243</span><a name="line.243"></a>
-<span class="sourceLineNo">244</span> public void setInMemoryCompactionCompleted() {<a name="line.244"></a>
-<span class="sourceLineNo">245</span> inMemoryCompactionInProgress.set(false);<a name="line.245"></a>
-<span class="sourceLineNo">246</span> }<a name="line.246"></a>
-<span class="sourceLineNo">247</span><a name="line.247"></a>
-<span class="sourceLineNo">248</span> protected boolean setInMemoryCompactionFlag() {<a name="line.248"></a>
-<span class="sourceLineNo">249</span> return inMemoryCompactionInProgress.compareAndSet(false, true);<a name="line.249"></a>
-<span class="sourceLineNo">250</span> }<a name="line.250"></a>
-<span class="sourceLineNo">251</span><a name="line.251"></a>
-<span class="sourceLineNo">252</span> @Override<a name="line.252"></a>
-<span class="sourceLineNo">253</span> protected long keySize() {<a name="line.253"></a>
-<span class="sourceLineNo">254</span> // Need to consider dataSize/keySize of all segments in pipeline and active<a name="line.254"></a>
-<span class="sourceLineNo">255</span> long keySize = getActive().getDataSize();<a name="line.255"></a>
-<span class="sourceLineNo">256</span> for (Segment segment : this.pipeline.getSegments()) {<a name="line.256"></a>
-<span class="sourceLineNo">257</span> keySize += segment.getDataSize();<a name="line.257"></a>
-<span class="sourceLineNo">258</span> }<a name="line.258"></a>
-<span class="sourceLineNo">259</span> return keySize;<a name="line.259"></a>
-<span class="sourceLineNo">260</span> }<a name="line.260"></a>
-<span class="sourceLineNo">261</span><a name="line.261"></a>
-<span class="sourceLineNo">262</span> @Override<a name="line.262"></a>
-<span class="sourceLineNo">263</span> protected long heapSize() {<a name="line.263"></a>
-<span class="sourceLineNo">264</span> // Need to consider heapOverhead of all segments in pipeline and active<a name="line.264"></a>
-<span class="sourceLineNo">265</span> long h = getActive().getHeapSize();<a name="line.265"></a>
-<span class="sourceLineNo">266</span> for (Segment segment : this.pipeline.getSegments()) {<a name="line.266"></a>
-<span class="sourceLineNo">267</span> h += segment.getHeapSize();<a name="line.267"></a>
-<span class="sourceLineNo">268</span> }<a name="line.268"></a>
-<span class="sourceLineNo">269</span> return h;<a name="line.269"></a>
-<span class="sourceLineNo">270</span> }<a name="line.270"></a>
-<span class="sourceLineNo">271</span><a name="line.271"></a>
-<span class="sourceLineNo">272</span> @Override<a name="line.272"></a>
-<span class="sourceLineNo">273</span> public void updateLowestUnflushedSequenceIdInWAL(boolean onlyIfGreater) {<a name="line.273"></a>
-<span class="sourceLineNo">274</span> long minSequenceId = pipeline.getMinSequenceId();<a name="line.274"></a>
-<span class="sourceLineNo">275</span> if(minSequenceId != Long.MAX_VALUE) {<a name="line.275"></a>
-<span class="sourceLineNo">276</span> byte[] encodedRegionName = getRegionServices().getRegionInfo().getEncodedNameAsBytes();<a name="line.276"></a>
-<span class="sourceLineNo">277</span> byte[] familyName = getFamilyNameInBytes();<a name="line.277"></a>
-<span class="sourceLineNo">278</span> WAL WAL = getRegionServices().getWAL();<a name="line.278"></a>
-<span class="sourceLineNo">279</span> if (WAL != null) {<a name="line.279"></a>
-<span class="sourceLineNo">280</span> WAL.updateStore(encodedRegionName, familyName, minSequenceId, onlyIfGreater);<a name="line.280"></a>
-<span class="sourceLineNo">281</span> }<a name="line.281"></a>
-<span class="sourceLineNo">282</span> }<a name="line.282"></a>
-<span class="sourceLineNo">283</span> }<a name="line.283"></a>
-<span class="sourceLineNo">284</span><a name="line.284"></a>
-<span class="sourceLineNo">285</span> /**<a name="line.285"></a>
-<span class="sourceLineNo">286</span> * This message intends to inform the MemStore that next coming updates<a name="line.286"></a>
-<span class="sourceLineNo">287</span> * are going to be part of the replaying edits from WAL<a name="line.287"></a>
-<span class="sourceLineNo">288</span> */<a name="line.288"></a>
-<span class="sourceLineNo">289</span> @Override<a name="line.289"></a>
-<span class="sourceLineNo">290</span> public void startReplayingFromWAL() {<a name="line.290"></a>
-<span class="sourceLineNo">291</span> inWalReplay = true;<a name="line.291"></a>
-<span class="sourceLineNo">292</span> }<a name="line.292"></a>
-<span class="sourceLineNo">293</span><a name="line.293"></a>
-<span class="sourceLineNo">294</span> /**<a name="line.294"></a>
-<span class="sourceLineNo">295</span> * This message intends to inform the MemStore that the replaying edits from WAL<a name="line.295"></a>
-<span class="sourceLineNo">296</span> * are done<a name="line.296"></a>
-<span class="sourceLineNo">297</span> */<a name="line.297"></a>
-<span class="sourceLineNo">298</span> @Override<a name="line.298"></a>
-<span class="sourceLineNo">299</span> public void stopReplayingFromWAL() {<a name="line.299"></a>
-<span class="sourceLineNo">300</span> inWalReplay = false;<a name="line.300"></a>
-<span class="sourceLineNo">301</span> }<a name="line.301"></a>
-<span class="sourceLineNo">302</span><a name="line.302"></a>
-<span class="sourceLineNo">303</span> /**<a name="line.303"></a>
-<span class="sourceLineNo">304</span> * Issue any synchronization and test needed before applying the update<a name="line.304"></a>
-<span class="sourceLineNo">305</span> * For compacting memstore this means checking the update can increase the size without<a name="line.305"></a>
-<span class="sourceLineNo">306</span> * overflow<a name="line.306"></a>
-<span class="sourceLineNo">307</span> * @param currentActive the segment to be updated<a name="line.307"></a>
-<span class="sourceLineNo">308</span> * @param cell the cell to be added<a name="line.308"></a>
-<span class="sourceLineNo">309</span> * @param memstoreSizing object to accumulate region size changes<a name="line.309"></a>
-<span class="sourceLineNo">310</span> * @return true iff can proceed with applying the update<a name="line.310"></a>
-<span class="sourceLineNo">311</span> */<a name="line.311"></a>
-<span class="sourceLineNo">312</span> @Override protected boolean preUpdate(MutableSegment currentActive, Cell cell,<a name="line.312"></a>
-<span class="sourceLineNo">313</span> MemStoreSizing memstoreSizing) {<a name="line.313"></a>
-<span class="sourceLineNo">314</span> if(currentActive.sharedLock()) {<a name="line.314"></a>
-<span class="sourceLineNo">315</span> if (checkAndAddToActiveSize(currentActive, cell, memstoreSizing)) {<a name="line.315"></a>
-<span class="sourceLineNo">316</span> return true;<a name="line.316"></a>
-<span class="sourceLineNo">317</span> }<a name="line.317"></a>
-<span class="sourceLineNo">318</span> currentActive.sharedUnlock();<a name="line.318"></a>
-<span class="sourceLineNo">319</span> }<a name="line.319"></a>
-<span class="sourceLineNo">320</span> return false;<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>
-<span class="sourceLineNo">323</span> @Override protected void postUpdate(MutableSegment currentActive) {<a name="line.323"></a>
-<span class="sourceLineNo">324</span> currentActive.sharedUnlock();<a name="line.324"></a>
-<span class="sourceLineNo">325</span> }<a name="line.325"></a>
-<span class="sourceLineNo">326</span><a name="line.326"></a>
-<span class="sourceLineNo">327</span> @Override protected boolean sizeAddedPreOperation() {<a name="line.327"></a>
-<span class="sourceLineNo">328</span> return true;<a name="line.328"></a>
-<span class="sourceLineNo">329</span> }<a name="line.329"></a>
-<span class="sourceLineNo">330</span><a name="line.330"></a>
-<span class="sourceLineNo">331</span> // the getSegments() method is used for tests only<a name="line.331"></a>
-<span class="sourceLineNo">332</span> @VisibleForTesting<a name="line.332"></a>
-<span class="sourceLineNo">333</span> @Override<a name="line.333"></a>
-<span class="sourceLineNo">334</span> protected List<Segment> getSegments() {<a name="line.334"></a>
-<span class="sourceLineNo">335</span> List<? extends Segment> pipelineList = pipeline.getSegments();<a name="line.335"></a>
-<span class="sourceLineNo">336</span> List<Segment> list = new ArrayList<>(pipelineList.size() + 2);<a name="line.336"></a>
-<span class="sourceLineNo">337</span> list.add(getActive());<a name="line.337"></a>
-<span class="sourceLineNo">338</span> list.addAll(pipelineList);<a name="line.338"></a>
-<span class="sourceLineNo">339</span> list.addAll(snapshot.getAllSegments());<a name="line.339"></a>
-<span class="sourceLineNo">340</span><a name="line.340"></a>
-<span class="sourceLineNo">341</span> return list;<a name="line.341"></a>
-<span class="sourceLineNo">342</span> }<a name="line.342"></a>
-<span class="sourceLineNo">343</span><a name="line.343"></a>
-<span class="sourceLineNo">344</span> // the following three methods allow to manipulate the settings of composite snapshot<a name="line.344"></a>
-<span class="sourceLineNo">345</span> public void setCompositeSnapshot(boolean useCompositeSnapshot) {<a name="line.345"></a>
-<span class="sourceLineNo">346</span> this.compositeSnapshot = useCompositeSnapshot;<a name="line.346"></a>
-<span class="sourceLineNo">347</span> }<a name="line.347"></a>
-<span class="sourceLineNo">348</span><a name="line.348"></a>
-<span class="sourceLineNo">349</span> public boolean swapCompactedSegments(VersionedSegmentsList versionedList, ImmutableSegment result,<a name="line.349"></a>
-<span class="sourceLineNo">350</span> boolean merge) {<a name="line.350"></a>
-<span class="sourceLineNo">351</span> // last true stands for updating the region size<a name="line.351"></a>
-<span class="sourceLineNo">352</span> return pipeline.swap(versionedList, result, !merge, true);<a name="line.352"></a>
-<span class="sourceLineNo">353</span> }<a name="line.353"></a>
-<span class="sourceLineNo">354</span><a name="line.354"></a>
-<span class="sourceLineNo">355</span> /**<a name="line.355"></a>
-<span class="sourceLineNo">356</span> * @param requesterVersion The caller must hold the VersionedList of the pipeline<a name="line.356"></a>
-<span class="sourceLineNo">357</span> * with version taken earlier. This version must be passed as a parameter here.<a name="line.357"></a>
-<span class="sourceLineNo">358</span> * The flattening happens only if versions match.<a name="line.358"></a>
-<span class="sourceLineNo">359</span> */<a name="line.359"></a>
-<span class="sourceLineNo">360</span> public void flattenOneSegment(long requesterVersion, MemStoreCompactionStrategy.Action action) {<a name="line.360"></a>
-<span class="sourceLineNo">361</span> pipeline.flattenOneSegment(requesterVersion, indexType, action);<a name="line.361"></a>
-<span class="sourceLineNo">362</span> }<a name="line.362"></a>
-<span class="sourceLineNo">363</span><a name="line.363"></a>
-<span class="sourceLineNo">364</span> // setter is used only for testability<a name="line.364"></a>
-<span class="sourceLineNo">365</span> @VisibleForTesting<a name="line.365"></a>
-<span class="sourceLineNo">366</span> void setIndexType(IndexType type) {<a name="line.366"></a>
-<span class="sourceLineNo">367</span> indexType = type;<a name="line.367"></a>
-<span class="sourceLineNo">368</span> // Because this functionality is for testing only and tests are setting in-memory flush size<a name="line.368"></a>
-<span class="sourceLineNo">369</span> // according to their need, there is no setting of in-memory flush size, here.<a name="line.369"></a>
-<span class="sourceLineNo">370</span> // If it is needed, please change in-memory flush size explicitly<a name="line.370"></a>
-<span class="sourceLineNo">371</span> }<a name="line.371"></a>
-<span class="sourceLineNo">372</span><a name="line.372"></a>
-<span class="sourceLineNo">373</span> public IndexType getIndexType() {<a name="line.373"></a>
-<span class="sourceLineNo">374</span> return indexType;<a name="line.374"></a>
-<span class="sourceLineNo">375</span> }<a name="line.375"></a>
-<span class="sourceLineNo">376</span><a name="line.376"></a>
-<span class="sourceLineNo">377</span> public boolean hasImmutableSegments() {<a name="line.377"></a>
-<span class="sourceLineNo">378</span> return !pipeline.isEmpty();<a name="line.378"></a>
-<span class="sourceLineNo">379</span> }<a name="line.379"></a>
-<span class="sourceLineNo">380</span><a name="line.380"></a>
-<span class="sourceLineNo">381</span> public VersionedSegmentsList getImmutableSegments() {<a name="line.381"></a>
-<span class="sourceLineNo">382</span> return pipeline.getVersionedList();<a name="line.382"></a>
-<span class="sourceLineNo">383</span> }<a name="line.383"></a>
-<span class="sourceLineNo">384</span><a name="line.384"></a>
-<span class="sourceLineNo">385</span> public long getSmallestReadPoint() {<a name="line.385"></a>
-<span class="sourceLineNo">386</span> return store.getSmallestReadPoint();<a name="line.386"></a>
-<span class="sourceLineNo">387</span> }<a name="line.387"></a>
-<span class="sourceLineNo">388</span><a name="line.388"></a>
-<span class="sourceLineNo">389</span> public HStore getStore() {<a name="line.389"></a>
-<span class="sourceLineNo">390</span> return store;<a name="line.390"></a>
-<span class="sourceLineNo">391</span> }<a name="line.391"></a>
-<span class="sourceLineNo">392</span><a name="line.392"></a>
-<span class="sourceLineNo">393</span> public String getFamilyName() {<a name="line.393"></a>
-<span class="sourceLineNo">394</span> return Bytes.toString(getFamilyNameInBytes());<a name="line.394"></a>
-<span class="sourceLineNo">395</span> }<a name="line.395"></a>
-<span class="sourceLineNo">396</span><a name="line.396"></a>
-<span class="sourceLineNo">397</span> @Override<a name="line.397"></a>
-<span class="sourceLineNo">398</span> public List<KeyValueScanner> getScanners(long readPt) throws IOException {<a name="line.398"></a>
-<span class="sourceLineNo">399</span> MutableSegment activeTmp = getActive();<a name="line.399"></a>
-<span class="sourceLineNo">400</span> List<? extends Segment> pipelineList = pipeline.getSegments();<a name="line.400"></a>
-<span class="sourceLineNo">401</span> List<? extends Segment> snapshotList = snapshot.getAllSegments();<a name="line.401"></a>
-<span class="sourceLineNo">402</span> long numberOfSegments = 1L + pipelineList.size() + snapshotList.size();<a name="line.402"></a>
-<span class="sourceLineNo">403</span> // The list of elements in pipeline + the active element + the snapshot segment<a name="line.403"></a>
-<span class="sourceLineNo">404</span> List<KeyValueScanner> list = createList((int) numberOfSegments);<a name="line.404"></a>
-<span class="sourceLineNo">405</span> addToScanners(activeTmp, readPt, list);<a name="line.405"></a>
-<span class="sourceLineNo">406</span> addToScanners(pipelineList, readPt, list);<a name="line.406"></a>
-<span class="sourceLineNo">407</span> addToScanners(snapshotList, readPt, list);<a name="line.407"></a>
-<span class="sourceLineNo">408</span> return list;<a name="line.408"></a>
-<span class="sourceLineNo">409</span> }<a name="line.409"></a>
-<span class="sourceLineNo">410</span><a name="line.410"></a>
-<span class="sourceLineNo">411</span> @VisibleForTesting<a name="line.411"></a>
-<span class="sourceLineNo">412</span> protected List<KeyValueScanner> createList(int capacity) {<a name="line.412"></a>
-<span class="sourceLineNo">413</span> return new ArrayList<>(capacity);<a name="line.413"></a>
-<span class="sourceLineNo">414</span> }<a name="line.414"></a>
-<span class="sourceLineNo">415</span><a name="line.415"></a>
-<span class="sourceLineNo">416</span> /**<a name="line.416"></a>
-<span class="sourceLineNo">417</span> * Check whether anything need to be done based on the current active set size.<a name="line.417"></a>
-<span class="sourceLineNo">418</span> * The method is invoked upon every addition to the active set.<a name="line.418"></a>
-<span class="sourceLineNo">419</span> * For CompactingMemStore, flush the active set to the read-only memory if it's<a name="line.419"></a>
-<span class="sourceLineNo">420</span> * size is above threshold<a name="line.420"></a>
-<span class="sourceLineNo">421</span> * @param currActive intended segment to update<a name="line.421"></a>
-<span class="sourceLineNo">422</span> * @param cellToAdd cell to be added to the segment<a name="line.422"></a>
-<span class="sourceLineNo">423</span> * @param memstoreSizing object to accumulate changed size<a name="line.423"></a>
-<span class="sourceLineNo">424</span> * @return true if the cell can be added to the<a name="line.424"></a>
-<span class="sourceLineNo">425</span> */<a name="line.425"></a>
-<span class="sourceLineNo">426</span> private boolean checkAndAddToActiveSize(MutableSegment currActive, Cell cellToAdd,<a name="line.426"></a>
-<span class="sourceLineNo">427</span> MemStoreSizing memstoreSizing) {<a name="line.427"></a>
-<span class="sourceLineNo">428</span> if (shouldFlushInMemory(currActive, cellToAdd, memstoreSizing)) {<a name="line.428"></a>
-<span class="sourceLineNo">429</span> if (currActive.setInMemoryFlushed()) {<a name="line.429"></a>
-<span class="sourceLineNo">430</span> flushInMemory(currActive);<a name="line.430"></a>
-<span class="sourceLineNo">431</span> if (setInMemoryCompactionFlag()) {<a name="line.431"></a>
-<span class="sourceLineNo">432</span> // The thread is dispatched to do in-memory compaction in the background<a name="line.432"></a>
-<span class="sourceLineNo">433</span> InMemoryCompactionRunnable runnable = new InMemoryCompactionRunnable();<a name="line.433"></a>
-<span class="sourceLineNo">434</span> if (LOG.isTraceEnabled()) {<a name="line.434"></a>
-<span class="sourceLineNo">435</span> LOG.trace("Dispatching the MemStore in-memory flush for store " + store<a name="line.435"></a>
-<span class="sourceLineNo">436</span> .getColumnFamilyName());<a name="line.436"></a>
-<span class="sourceLineNo">437</span> }<a name="line.437"></a>
-<span class="sourceLineNo">438</span> getPool().execute(runnable);<a name="line.438"></a>
-<span class="sourceLineNo">439</span> }<a name="line.439"></a>
-<span class="sourceLineNo">440</span> }<a name="line.440"></a>
-<span class="sourceLineNo">441</span> return false;<a name="line.441"></a>
-<span class="sourceLineNo">442</span> }<a name="line.442"></a>
-<span class="sourceLineNo">443</span> return true;<a name="line.443"></a>
-<span class="sourceLineNo">444</span> }<a name="line.444"></a>
-<span class="sourceLineNo">445</span><a name="line.445"></a>
-<span class="sourceLineNo">446</span> // externally visible only for tests<a name="line.446"></a>
-<span class="sourceLineNo">447</span> // when invoked directly from tests it must be verified that the caller doesn't hold updatesLock,<a name="line.447"></a>
-<span class="sourceLineNo">448</span> // otherwise there is a deadlock<a name="line.448"></a>
-<span class="sourceLineNo">449</span> @VisibleForTesting<a name="line.449"></a>
-<span class="sourceLineNo">450</span> void flushInMemory() {<a name="line.450"></a>
-<span class="sourceLineNo">451</span> MutableSegment currActive = getActive();<a name="line.451"></a>
-<span class="sourceLineNo">452</span> if(currActive.setInMemoryFlushed()) {<a name="line.452"></a>
-<span class="sourceLineNo">453</span> flushInMemory(currActive);<a name="line.453"></a>
-<span class="sourceLineNo">454</span> }<a name="line.454"></a>
-<span class="sourceLineNo">455</span> inMemoryCompaction();<a name="line.455"></a>
-<span class="sourceLineNo">456</span> }<a name="line.456"></a>
-<span class="sourceLineNo">457</span><a name="line.457"></a>
-<span class="sourceLineNo">458</span> private void flushInMemory(MutableSegment currActive) {<a name="line.458"></a>
-<span class="sourceLineNo">459</span> LOG.trace("IN-MEMORY FLUSH: Pushing active segment into compaction pipeline");<a name="line.459"></a>
-<span class="sourceLineNo">460</span> pushActiveToPipeline(currActive);<a name="line.460"></a>
-<span class="sourceLineNo">461</span> }<a name="line.461"></a>
-<span class="sourceLineNo">462</span><a name="line.462"></a>
-<span class="sourceLineNo">463</span> void inMemoryCompaction() {<a name="line.463"></a>
-<span class="sourceLineNo">464</span> // setting the inMemoryCompactionInProgress flag again for the case this method is invoked<a name="line.464"></a>
-<span class="sourceLineNo">465</span> // directly (only in tests) in the common path setting from true to true is idempotent<a name="line.465"></a>
-<span class="sourceLineNo">466</span> inMemoryCompactionInProgress.set(true);<a name="line.466"></a>
-<span class="sourceLineNo">467</span> // Used by tests<a name="line.467"></a>
-<span class="sourceLineNo">468</span> if (!allowCompaction.get()) {<a name="line.468"></a>
-<span class="sourceLineNo">469</span> return;<a name="line.469"></a>
-<span class="sourceLineNo">470</span> }<a name="line.470"></a>
-<span class="sourceLineNo">471</span> try {<a name="line.471"></a>
-<span class="sourceLineNo">472</span> // Speculative compaction execution, may be interrupted if flush is forced while<a name="line.472"></a>
-<span class="sourceLineNo">473</span> // compaction is in progress<a name="line.473"></a>
-<span class="sourceLineNo">474</span> if(!compactor.start()) {<a name="line.474"></a>
-<span class="sourceLineNo">475</span> setInMemoryCompactionCompleted();<a name="line.475"></a>
-<span class="sourceLineNo">476</span> }<a name="line.476"></a>
-<span class="sourceLineNo">477</span> } catch (IOException e) {<a name="line.477"></a>
-<span class="sourceLineNo">478</span> LOG.warn("Unable to run in-memory compaction on {}/{}; exception={}",<a name="line.478"></a>
-<span class="sourceLineNo">479</span> getRegionServices().getRegionInfo().getEncodedName(), getFamilyName(), e);<a name="line.479"></a>
-<span class="sourceLineNo">480</span> }<a name="line.480"></a>
-<span class="sourceLineNo">481</span> }<a name="line.481"></a>
-<span class="sourceLineNo">482</span><a name="line.482"></a>
-<span class="sourceLineNo">483</span> private Segment getLastSegment() {<a name="line.483"></a>
-<span class="sourceLineNo">484</span> Segment localActive = getActive();<a name="line.484"></a>
-<span class="sourceLineNo">485</span> Segment tail = pipeline.getTail();<a name="line.485"></a>
-<span class="sourceLineNo">486</span> return tail == null ? localActive : tail;<a name="line.486"></a>
-<span class="sourceLineNo">487</span> }<a name="line.487"></a>
-<span class="sourceLineNo">488</span><a name="line.488"></a>
-<span class="sourceLineNo">489</span> private byte[] getFamilyNameInBytes() {<a name="line.489"></a>
-<span class="sourceLineNo">490</span> return store.getColumnFamilyDescriptor().getName();<a name="line.490"></a>
-<span class="sourceLineNo">491</span> }<a name="line.491"></a>
-<span class="sourceLineNo">492</span><a name="line.492"></a>
-<span class="sourceLineNo">493</span> private ThreadPoolExecutor getPool() {<a name="line.493"></a>
-<span class="sourceLineNo">494</span> return getRegionServices().getInMemoryCompactionPool();<a name="line.494"></a>
-<span class="sourceLineNo">495</span> }<a name="line.495"></a>
-<span class="sourceLineNo">496</span><a name="line.496"></a>
-<span class="sourceLineNo">497</span> @VisibleForTesting<a name="line.497"></a>
-<span class="sourceLineNo">498</span> protected boolean shouldFlushInMemory(MutableSegment currActive, Cell cellToAdd,<a name="line.498"></a>
-<span class="sourceLineNo">499</span> MemStoreSizing memstoreSizing) {<a name="line.499"></a>
-<span class="sourceLineNo">500</span> long cellSize = currActive.getCellLength(cellToAdd);<a name="line.500"></a>
-<span class="sourceLineNo">501</span> long segmentDataSize = currActive.getDataSize();<a name="line.501"></a>
-<span class="sourceLineNo">502</span> while (segmentDataSize + cellSize < inmemoryFlushSize || inWalReplay) {<a name="line.502"></a>
-<span class="sourceLineNo">503</span> // when replaying edits from WAL there is no need in in-memory flush regardless the size<a name="line.503"></a>
-<span class="sourceLineNo">504</span> // otherwise size below flush threshold try to update atomically<a name="line.504"></a>
-<span class="sourceLineNo">505</span> if(currActive.compareAndSetDataSize(segmentDataSize, segmentDataSize + cellSize)) {<a name="line.505"></a>
-<span class="sourceLineNo">506</span> if(memstoreSizing != null){<a name="line.506"></a>
-<span class="sourceLineNo">507</span> memstoreSizing.incMemStoreSize(cellSize, 0, 0);<a name="line.507"></a>
-<span class="sourceLineNo">508</span> }<a name="line.508"></a>
-<span class="sourceLineNo">509</span> //enough space for cell - no need to flush<a name="line.509"></a>
-<span class="sourceLineNo">510</span> return false;<a name="line.510"></a>
-<span class="sourceLineNo">511</span> }<a name="line.511"></a>
-<span class="sourceLineNo">512</span> segmentDataSize = currActive.getDataSize();<a name="line.512"></a>
-<span class="sourceLineNo">513</span> }<a name="line.513"></a>
-<span class="sourceLineNo">514</span> // size above flush threshold<a name="line.514"></a>
-<span class="sourceLineNo">515</span> return true;<a name="line.515"></a>
-<span class="sourceLineNo">516</span> }<a name="line.516"></a>
-<span class="sourceLineNo">517</span><a name="line.517"></a>
-<span class="sourceLineNo">518</span> /**<a name="line.518"></a>
-<span class="sourceLineNo">519</span> * The request to cancel the compaction asynchronous task (caused by in-memory flush)<a name="line.519"></a>
-<span class="sourceLineNo">520</span> * The compaction may still happen if the request was sent too late<a name="line.520"></a>
-<span class="sourceLineNo">521</span> * Non-blocking request<a name="line.521"></a>
-<span class="sourceLineNo">522</span> */<a name="line.522"></a>
-<span class="sourceLineNo">523</span> private void stopCompaction() {<a name="line.523"></a>
-<span class="sourceLineNo">524</span> if (inMemoryCompactionInProgress.get()) {<a name="line.524"></a>
-<span class="sourceLineNo">525</span> compactor.stop();<a name="line.525"></a>
-<span class="sourceLineNo">526</span> }<a name="line.526"></a>
-<span class="sourceLineNo">527</span> }<a name="line.527"></a>
-<span class="sourceLineNo">528</span><a name="line.528"></a>
-<span class="sourceLineNo">529</span> protected void pushActiveToPipeline(MutableSegment currActive) {<a name="line.529"></a>
-<span class="sourceLineNo">530</span> if (!currActive.isEmpty()) {<a name="line.530"></a>
-<span class="sourceLineNo">531</span> pipeline.pushHead(currActive);<a name="line.531"></a>
-<span class="sourceLineNo">532</span> resetActive();<a name="line.532"></a>
-<span class="sourceLineNo">533</span> }<a name="line.533"></a>
-<span class="sourceLineNo">534</span> }<a name="line.534"></a>
-<span class="sourceLineNo">535</span><a name="line.535"></a>
-<span class="sourceLineNo">536</span> private void pushTailToSnapshot() {<a name="line.536"></a>
-<span class="sourceLineNo">537</span> VersionedSegmentsList segments = pipeline.getVersionedTail();<a name="line.537"></a>
-<span class="sourceLineNo">538</span> pushToSnapshot(segments.getStoreSegments());<a name="line.538"></a>
-<span class="sourceLineNo">539</span> // In Swap: don't close segments (they are in snapshot now) and don't update the region size<a name="line.539"></a>
-<span class="sourceLineNo">540</span> pipeline.swap(segments,null,false, false);<a name="line.540"></a>
-<span class="sourceLineNo">541</span> }<a name="line.541"></a>
-<span class="sourceLineNo">542</span><a name="line.542"></a>
-<span class="sourceLineNo">543</span> private void pushPipelineToSnapshot() {<a name="line.543"></a>
-<span class="sourceLineNo">544</span> int iterationsCnt = 0;<a name="line.544"></a>
-<span class="sourceLineNo">545</span> boolean done = false;<a name="line.545"></a>
-<span class="sourceLineNo">546</span> while (!done) {<a name="line.546"></a>
-<span class="sourceLineNo">547</span> iterationsCnt++;<a name="line.547"></a>
-<span class="sourceLineNo">548</span> VersionedSegmentsList segments = pipeline.getVersionedList();<a name="line.548"></a>
-<span class="sourceLineNo">549</span> pushToSnapshot(segments.getStoreSegments());<a name="line.549"></a>
-<span class="sourceLineNo">550</span> // swap can return false in case the pipeline was updated by ongoing compaction<a name="line.550"></a>
-<span class="sourceLineNo">551</span> // and the version increase, the chance of it happenning is very low<a name="line.551"></a>
-<span class="sourceLineNo">552</span> // In Swap: don't close segments (they are in snapshot now) and don't update the region size<a name="line.552"></a>
-<span class="sourceLineNo">553</span> done = pipeline.swap(segments, null, false, false);<a name="line.553"></a>
-<span class="sourceLineNo">554</span> if (iterationsCnt>2) {<a name="line.554"></a>
-<span class="sourceLineNo">555</span> // practically it is impossible that this loop iterates more than two times<a name="line.555"></a>
-<span class="sourceLineNo">556</span> // (because the compaction is stopped and none restarts it while in snapshot request),<a name="line.556"></a>
-<span class="sourceLineNo">557</span> // however stopping here for the case of the infinite loop causing by any error<a name="line.557"></a>
-<span class="sourceLineNo">558</span> LOG.warn("Multiple unsuccessful attempts to push the compaction pipeline to snapshot," +<a name="line.558"></a>
-<span class="sourceLineNo">559</span> " while flushing to disk.");<a name="line.559"></a>
-<span class="sourceLineNo">560</span> this.snapshot = SegmentFactory.instance().createImmutableSegment(getComparator());<a name="line.560"></a>
-<span class="sourceLineNo">561</span> break;<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><a name="line.565"></a>
-<span class="sourceLineNo">566</span> private void pushToSnapshot(List<ImmutableSegment> segments) {<a name="line.566"></a>
-<span class="sourceLineNo">567</span> if(segments.isEmpty()) return;<a name="line.567"></a>
-<span class="sourceLineNo">568</span> if(segments.size() == 1 && !segments.get(0).isEmpty()) {<a name="line.568"></a>
-<span class="sourceLineNo">569</span> this.snapshot = segments.get(0);<a name="line.569"></a>
-<span class="sourceLineNo">570</span> return;<a name="line.570"></a>
-<span class="sourceLineNo">571</span> } else { // create composite snapshot<a name="line.571"></a>
-<span class="sourceLineNo">572</span> this.snapshot =<a name="line.572"></a>
-<span class="sourceLineNo">573</span> SegmentFactory.instance().createCompositeImmutableSegment(getComparator(), segments);<a name="line.573"></a>
-<span class="sourceLineNo">574</span> }<a name="line.574"></a>
-<span class="sourceLineNo">575</span> }<a name="line.575"></a>
-<span class="sourceLineNo">576</span><a name="line.576"></a>
-<span class="sourceLineNo">577</span> private RegionServicesForStores getRegionServices() {<a name="line.577"></a>
-<span class="sourceLineNo">578</span> return regionServices;<a name="line.578"></a>
-<span class="sourceLineNo">579</span> }<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> * The in-memory-flusher thread performs the flush asynchronously.<a name="line.582"></a>
-<span class="sourceLineNo">583</span> * There is at most one thread per memstore instance.<a name="line.583"></a>
-<span class="sourceLineNo">584</span> * It takes the updatesLock exclusively, pushes active into the pipeline, releases updatesLock<a name="line.584"></a>
-<span class="sourceLineNo">585</span> * and compacts the pipeline.<a name="line.585"></a>
-<span class="sourceLineNo">586</span> */<a name="line.586"></a>
-<span class="sourceLineNo">587</span> private class InMemoryCompactionRunnable implements Runnable {<a name="line.587"></a>
-<span class="sourceLineNo">588</span> @Override<a name="line.588"></a>
-<span class="sourceLineNo">589</span> public void run() {<a name="line.589"></a>
-<span class="sourceLineNo">590</span> inMemoryCompaction();<a name="line.590"></a>
-<span class="sourceLineNo">591</span> }<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> @VisibleForTesting<a name="line.594"></a>
-<span class="sourceLineNo">595</span> boolean isMemStoreFlushingInMemory() {<a name="line.595"></a>
-<span class="sourceLineNo">596</span> return inMemoryCompactionInProgress.get();<a name="line.596"></a>
-<span class="sourceLineNo">597</span> }<a name="line.597"></a>
-<span class="sourceLineNo">598</span><a name="line.598"></a>
-<span class="sourceLineNo">599</span> /**<a name="line.599"></a>
-<span class="sourceLineNo">600</span> * @param cell Find the row that comes after this one. If null, we return the<a name="line.600"></a>
-<span class="sourceLineNo">601</span> * first.<a name="line.601"></a>
-<span class="sourceLineNo">602</span> * @return Next row or null if none found.<a name="line.602"></a>
-<span class="sourceLineNo">603</span> */<a name="line.603"></a>
-<span class="sourceLineNo">604</span> Cell getNextRow(final Cell cell) {<a name="line.604"></a>
-<span class="sourceLineNo">605</span> Cell lowest = null;<a name="line.605"></a>
-<span class="sourceLineNo">606</span> List<Segment> segments = getSegments();<a name="line.606"></a>
-<span class="sourceLineNo">607</span> for (Segment segment : segments) {<a name="line.607"></a>
-<span class="sourceLineNo">608</span> if (lowest == null) {<a name="line.608"></a>
-<span class="sourceLineNo">609</span> lowest = getNextRow(cell, segment.getCellSet());<a name="line.609"></a>
-<span class="sourceLineNo">610</span> } else {<a name="line.610"></a>
-<span class="sourceLineNo">611</span> lowest = getLowest(lowest, getNextRow(cell, segment.getCellSet()));<a name="line.611"></a>
-<span class="sourceLineNo">612</span> }<a name="line.612"></a>
-<span class="sourceLineNo">613</span> }<a name="line.613"></a>
-<span class="sourceLineNo">614</span> return lowest;<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> @VisibleForTesting<a name="line.617"></a>
-<span class="sourceLineNo">618</span> long getInmemoryFlushSize() {<a name="line.618"></a>
-<span class="sourceLineNo">619</span> return inmemoryFlushSize;<a name="line.619"></a>
-<span class="sourceLineNo">620</span> }<a name="line.620"></a>
-<span class="sourceLineNo">621</span><a name="line.621"></a>
-<span class="sourceLineNo">622</span> // debug method<a name="line.622"></a>
-<span class="sourceLineNo">623</span> public void debug() {<a name="line.623"></a>
-<span class="sourceLineNo">624</span> String msg = "active size=" + getActive().getDataSize();<a name="line.624"></a>
-<span class="sourceLineNo">625</span> msg += " allow compaction is "+ (allowCompaction.get() ? "true" : "false");<a name="line.625"></a>
-<span class="sourceLineNo">626</span> msg += " inMemoryCompactionInProgress is "+ (inMemoryCompactionInProgress.get() ? "true" :<a name="line.626"></a>
-<span class="sourceLineNo">627</span> "false");<a name="line.627"></a>
-<span class="sourceLineNo">628</span> LOG.debug(msg);<a name="line.628"></a>
-<span class="sourceLineNo">629</span> }<a name="line.629"></a>
-<span class="sourceLineNo">630</span><a name="line.630"></a>
-<span class="sourceLineNo">631</span>}<a name="line.631"></a>
+<span class="sourceLineNo">243</span> public void setInMemoryCompactionCompleted() {<a name="line.243"></a>
+<span class="sourceLineNo">244</span> inMemoryCompactionInProgress.set(false);<a name="line.244"></a>
+<span class="sourceLineNo">245</span> }<a name="line.245"></a>
+<span class="sourceLineNo">246</span><a name="line.246"></a>
+<span class="sourceLineNo">247</span> protected boolean setInMemoryCompactionFlag() {<a name="line.247"></a>
+<span class="sourceLineNo">248</span> return inMemoryCompactionInProgress.compareAndSet(false, 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> @Override<a name="line.251"></a>
+<span class="sourceLineNo">252</span> protected long keySize() {<a name="line.252"></a>
+<span class="sourceLineNo">253</span> // Need to consider dataSize/keySize of all segments in pipeline and active<a name="line.253"></a>
+<span class="sourceLineNo">254</span> long keySize = getActive().getDataSize();<a name="line.254"></a>
+<span class="sourceLineNo">255</span> for (Segment segment : this.pipeline.getSegments()) {<a name="line.255"></a>
+<span class="sourceLineNo">256</span> keySize += segment.getDataSize();<a name="line.256"></a>
+<span class="sourceLineNo">257</span> }<a name="line.257"></a>
+<span class="sourceLineNo">258</span> return keySize;<a name="line.258"></a>
+<span class="sourceLineNo">259</span> }<a name="line.259"></a>
+<span class="sourceLineNo">260</span><a name="line.260"></a>
+<span class="sourceLineNo">261</span> @Override<a name="line.261"></a>
+<span class="sourceLineNo">262</span> protected long heapSize() {<a name="line.262"></a>
+<span class="sourceLineNo">263</span> // Need to consider heapOverhead of all segments in pipeline and active<a name="line.263"></a>
+<span class="sourceLineNo">264</span> long h = getActive().getHeapSize();<a name="line.264"></a>
+<span class="sourceLineNo">265</span> for (Segment segment : this.pipeline.getSegments()) {<a name="line.265"></a>
+<span class="sourceLineNo">266</span> h += segment.getHeapSize();<a name="line.266"></a>
+<span class="sourceLineNo">267</span> }<a name="line.267"></a>
+<span class="sourceLineNo">268</span> return h;<a name="line.268"></a>
+<span class="sourceLineNo">269</span> }<a name="line.269"></a>
+<span class="sourceLineNo">270</span><a name="line.270"></a>
+<span class="sourceLineNo">271</span> @Override<a name="line.271"></a>
+<span class="sourceLineNo">272</span> public void updateLowestUnflushedSequenceIdInWAL(boolean onlyIfGreater) {<a name="line.272"></a>
+<span class="sourceLineNo">273</span> long minSequenceId = pipeline.getMinSequenceId();<a name="line.273"></a>
+<span class="sourceLineNo">274</span> if(minSequenceId != Long.MAX_VALUE) {<a name="line.274"></a>
+<span class="sourceLineNo">275</span> byte[] encodedRegionName = getRegionServices().getRegionInfo().getEncodedNameAsBytes();<a name="line.275"></a>
+<span class="sourceLineNo">276</span> byte[] familyName = getFamilyNameInBytes();<a name="line.276"></a>
+<span class="sourceLineNo">277</span> WAL WAL = getRegionServices().getWAL();<a name="line.277"></a>
+<span class="sourceLineNo">278</span> if (WAL != null) {<a name="line.278"></a>
+<span class="sourceLineNo">279</span> WAL.updateStore(encodedRegionName, familyName, minSequenceId, onlyIfGreater);<a name="line.279"></a>
+<span class="sourceLineNo">280</span> }<a name="line.280"></a>
+<span class="sourceLineNo">281</span> }<a name="line.281"></a>
+<span class="sourceLineNo">282</span> }<a name="line.282"></a>
+<span class="sourceLineNo">283</span><a name="line.283"></a>
+<span class="sourceLineNo">284</span> /**<a name="line.284"></a>
+<span class="sourceLineNo">285</span> * This message intends to inform the MemStore that next coming updates<a name="line.285"></a>
+<span class="sourceLineNo">286</span> * are going to be part of the replaying edits from WAL<a name="line.286"></a>
+<span class="sourceLineNo">287</span> */<a name="line.287"></a>
+<span class="sourceLineNo">288</span> @Override<a name="line.288"></a>
+<span class="sourceLineNo">289</span> public void startReplayingFromWAL() {<a name="line.289"></a>
+<span class="sourceLineNo">290</span> inWalReplay = true;<a name="line.290"></a>
+<span class="sourceLineNo">291</span> }<a name="line.291"></a>
+<span class="sourceLineNo">292</span><a name="line.292"></a>
+<span class="sourceLineNo">293</span> /**<a name="line.293"></a>
+<span class="sourceLineNo">294</span> * This message intends to inform the MemStore that the replaying edits from WAL<a name="line.294"></a>
+<span class="sourceLineNo">295</span> * are done<a name="line.295"></a>
+<span class="sourceLineNo">296</span> */<a name="line.296"></a>
+<span class="sourceLineNo">297</span> @Override<a name="line.297"></a>
+<span class="sourceLineNo">298</span> public void stopReplayingFromWAL() {<a name="line.298"></a>
+<span class="sourceLineNo">299</span> inWalReplay = false;<a name="line.299"></a>
+<span class="sourceLineNo">300</span> }<a name="line.300"></a>
+<span class="sourceLineNo">301</span><a name="line.301"></a>
+<span class="sourceLineNo">302</span> /**<a name="line.302"></a>
+<span class="sourceLineNo">303</span> * Issue any synchronization and test needed before applying the update<a name="line.303"></a>
+<span class="sourceLineNo">304</span> * For compacting memstore this means checking the update can increase the size without<a name="line.304"></a>
+<span class="sourceLineNo">305</span> * overflow<a name="line.305"></a>
+<span class="sourceLineNo">306</span> * @param currentActive the segment to be updated<a name="line.306"></a>
+<span class="sourceLineNo">307</span> * @param cell the cell to be added<a name="line.307"></a>
+<span class="sourceLineNo">308</span> * @param memstoreSizing object to accumulate region size changes<a name="line.308"></a>
+<span class="sourceLineNo">309</span> * @return true iff can proceed with applying the update<a name="line.309"></a>
+<span class="sourceLineNo">310</span> */<a name="line.310"></a>
+<span class="sourceLineNo">311</span> @Override protected boolean preUpdate(MutableSegment currentActive, Cell cell,<a name="line.311"></a>
+<span class="sourceLineNo">312</span> MemStoreSizing memstoreSizing) {<a name="line.312"></a>
+<span class="sourceLineNo">313</span> if(currentActive.sharedLock()) {<a name="line.313"></a>
+<span class="sourceLineNo">314</span> if (checkAndAddToActiveSize(currentActive, cell, memstoreSizing)) {<a name="line.314"></a>
+<span class="sourceLineNo">315</span> return true;<a name="line.315"></a>
+<span class="sourceLineNo">316</span> }<a name="line.316"></a>
+<span class="sourceLineNo">317</span> currentActive.sharedUnlock();<a name="line.317"></a>
+<span class="sourceLineNo">318</span> }<a name="line.318"></a>
+<span class="sourceLineNo">319</span> return false;<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> @Override protected void postUpdate(MutableSegment currentActive) {<a name="line.322"></a>
+<span class="sourceLineNo">323</span> currentActive.sharedUnlock();<a name="line.323"></a>
+<span class="sourceLineNo">324</span> }<a name="line.324"></a>
+<span class="sourceLineNo">325</span><a name="line.325"></a>
+<span class="sourceLineNo">326</span> @Override protected boolean sizeAddedPreOperation() {<a name="line.326"></a>
+<span class="sourceLineNo">327</span> return true;<a name="line.327"></a>
+<span class="sourceLineNo">328</span> }<a name="line.328"></a>
+<span class="sourceLineNo">329</span><a name="line.329"></a>
+<span class="sourceLineNo">330</span> // the getSegments() method is used for tests only<a name="line.330"></a>
+<span class="sourceLineNo">331</span> @VisibleForTesting<a name="line.331"></a>
+<span class="sourceLineNo">332</span> @Override<a name="line.332"></a>
+<span class="sourceLineNo">333</span> protected List<Segment> getSegments() {<a name="line.333"></a>
+<span class="sourceLineNo">334</span> List<? extends Segment> pipelineList = pipeline.getSegments();<a name="line.334"></a>
+<span class="sourceLineNo">335</span> List<Segment> list = new ArrayList<>(pipelineList.size() + 2);<a name="line.335"></a>
+<span class="sourceLineNo">336</span> list.add(getActive());<a name="line.336"></a>
+<span class="sourceLineNo">337</span> list.addAll(pipelineList);<a name="line.337"></a>
+<span class="sourceLineNo">338</span> list.addAll(snapshot.getAllSegments());<a name="line.338"></a>
+<span class="sourceLineNo">339</span><a name="line.339"></a>
+<span class="sourceLineNo">340</span> return list;<a name="line.340"></a>
+<span class="sourceLineNo">341</span> }<a name="line.341"></a>
+<span class="sourceLineNo">342</span><a name="line.342"></a>
+<span class="sourceLineNo">343</span> // the following three methods allow to manipulate the settings of composite snapshot<a name="line.343"></a>
+<span class="sourceLineNo">344</span> public void setCompositeSnapshot(boolean useCompositeSnapshot) {<a name="line.344"></a>
+<span class="sourceLineNo">345</span> this.compositeSnapshot = useCompositeSnapshot;<a name="line.345"></a>
+<span class="sourceLineNo">346</span> }<a name="line.346"></a>
+<span class="sourceLineNo">347</span><a name="line.347"></a>
+<span class="sourceLineNo">348</span> public boolean swapCompactedSegments(VersionedSegmentsList versionedList, ImmutableSegment result,<a name="line.348"></a>
+<span class="sourceLineNo">349</span> boolean merge) {<a name="line.349"></a>
+<span class="sourceLineNo">350</span> // last true stands for updating the region size<a name="line.350"></a>
+<span class="sourceLineNo">351</span> return pipeline.swap(versionedList, result, !merge, true);<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> /**<a name="line.354"></a>
+<span class="sourceLineNo">355</span> * @param requesterVersion The caller must hold the VersionedList of the pipeline<a name="line.355"></a>
+<span class="sourceLineNo">356</span> * with version taken earlier. This version must be passed as a parameter here.<a name="line.356"></a>
+<span class="sourceLineNo">357</span> * The flattening happens only if versions match.<a name="line.357"></a>
+<span class="sourceLineNo">358</span> */<a name="line.358"></a>
+<span class="sourceLineNo">359</span> public void flattenOneSegment(long requesterVersion, MemStoreCompactionStrategy.Action action) {<a name="line.359"></a>
+<span class="sourceLineNo">360</span> pipeline.flattenOneSegment(requesterVersion, indexType, action);<a name="line.360"></a>
+<span class="sourceLineNo">361</span> }<a name="line.361"></a>
+<span class="sourceLineNo">362</span><a name="line.362"></a>
+<span class="sourceLineNo">363</span> // setter is used only for testability<a name="line.363"></a>
+<span class="sourceLineNo">364</span> @VisibleForTesting<a name="line.364"></a>
+<span class="sourceLineNo">365</span> void setIndexType(IndexType type) {<a name="line.365"></a>
+<span class="sourceLineNo">366</span> indexType = type;<a name="line.366"></a>
+<span class="sourceLineNo">367</span> // Because this functionality is for testing only and tests are setting in-memory flush size<a name="line.367"></a>
+<span class="sourceLineNo">368</span> // according to their need, there is no setting of in-memory flush size, here.<a name="line.368"></a>
+<span class="sourceLineNo">369</span> // If it is needed, please change in-memory flush size explicitly<a name="line.369"></a>
+<span class="sourceLineNo">370</span> }<a name="line.370"></a>
+<span class="sourceLineNo">371</span><a name="line.371"></a>
+<span class="sourceLineNo">372</span> public IndexType getIndexType() {<a name="line.372"></a>
+<span class="sourceLineNo">373</span> return indexType;<a name="line.373"></a>
+<span class="sourceLineNo">374</span> }<a name="line.374"></a>
+<span class="sourceLineNo">375</span><a name="line.375"></a>
+<span class="sourceLineNo">376</span> public boolean hasImmutableSegments() {<a name="line.376"></a>
+<span class="sourceLineNo">377</span> return !pipeline.isEmpty();<a name="line.377"></a>
+<span class="sourceLineNo">378</span> }<a name="line.378"></a>
+<span class="sourceLineNo">379</span><a name="line.379"></a>
+<span class="sourceLineNo">380</span> public VersionedSegmentsList getImmutableSegments() {<a name="line.380"></a>
+<span class="sourceLineNo">381</span> return pipeline.getVersionedList();<a name="line.381"></a>
+<span class="sourceLineNo">382</span> }<a name="line.382"></a>
+<span class="sourceLineNo">383</span><a name="line.383"></a>
+<span class="sourceLineNo">384</span> public long getSmallestReadPoint() {<a name="line.384"></a>
+<span class="sourceLineNo">385</span> return store.getSmallestReadPoint();<a name="line.385"></a>
+<span class="sourceLineNo">386</span> }<a name="line.386"></a>
+<span class="sourceLineNo">387</span><a name="line.387"></a>
+<span class="sourceLineNo">388</span> public HStore getStore() {<a name="line.388"></a>
+<span class="sourceLineNo">389</span> return store;<a name="line.389"></a>
+<span class="sourceLineNo">390</span> }<a name="line.390"></a>
+<span class="sourceLineNo">391</span><a name="line.391"></a>
+<span class="sourceLineNo">392</span> public String getFamilyName() {<a name="line.392"></a>
+<span class="sourceLineNo">393</span> return Bytes.toString(getFamilyNameInBytes());<a name="line.393"></a>
+<span class="sourceLineNo">394</span> }<a name="line.394"></a>
+<span class="sourceLineNo">395</span><a name="line.395"></a>
+<span class="sourceLineNo">396</span> @Override<a name="line.396"></a>
+<span class="sourceLineNo">397</span> public List<KeyValueScanner> getScanners(long readPt) throws IOException {<a name="line.397"></a>
+<span class="sourceLineNo">398</span> MutableSegment activeTmp = getActive();<a name="line.398"></a>
+<span class="sourceLineNo">399</span> List<? extends Segment> pipelineList = pipeline.getSegments();<a name="line.399"></a>
+<span class="sourceLineNo">400</span> List<? extends Segment> snapshotList = snapshot.getAllSegments();<a name="line.400"></a>
+<span class="sourceLineNo">401</span> long numberOfSegments = 1L + pipelineList.size() + snapshotList.size();<a name="line.401"></a>
+<span class="sourceLineNo">402</span> // The list of elements in pipeline + the active element + the snapshot segment<a name="line.402"></a>
+<span class="sourceLineNo">403</span> List<KeyValueScanner> list = createList((int) numberOfSegments);<a name="line.403"></a>
+<span class="sourceLineNo">404</span> addToScanners(activeTmp, readPt, list);<a name="line.404"></a>
+<span class="sourceLineNo">405</span> addToScanners(pipelineList, readPt, list);<a name="line.405"></a>
+<span class="sourceLineNo">406</span> addToScanners(snapshotList, readPt, list);<a name="line.406"></a>
+<span class="sourceLineNo">407</span> return list;<a name="line.407"></a>
+<span class="sourceLineNo">408</span> }<a name="line.408"></a>
+<span class="sourceLineNo">409</span><a name="line.409"></a>
+<span class="sourceLineNo">410</span> @VisibleForTesting<a name="line.410"></a>
+<span class="sourceLineNo">411</span> protected List<KeyValueScanner> createList(int capacity) {<a name="line.411"></a>
+<span class="sourceLineNo">412</span> return new ArrayList<>(capacity);<a name="line.412"></a>
+<span class="sourceLineNo">413</span> }<a name="line.413"></a>
+<span class="sourceLineNo">414</span><a name="line.414"></a>
+<span class="sourceLineNo">415</span> /**<a name="line.415"></a>
+<span class="sourceLineNo">416</span> * Check whether anything need to be done based on the current active set size.<a name="line.416"></a>
+<span class="so
<TRUNCATED>