http://git-wip-us.apache.org/repos/asf/hbase-site/blob/883dde2f/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/MemStoreLABImpl.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/MemStoreLABImpl.html b/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/MemStoreLABImpl.html index 7290d52..f71c930 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/MemStoreLABImpl.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/MemStoreLABImpl.html @@ -128,244 +128,245 @@ <span class="sourceLineNo">120</span> */<a name="line.120"></a> <span class="sourceLineNo">121</span> @Override<a name="line.121"></a> <span class="sourceLineNo">122</span> public Cell forceCopyOfBigCellInto(Cell cell) {<a name="line.122"></a> -<span class="sourceLineNo">123</span> int size = KeyValueUtil.length(cell) + ChunkCreator.SIZEOF_CHUNK_HEADER;<a name="line.123"></a> -<span class="sourceLineNo">124</span> Preconditions.checkArgument(size >= 0, "negative size");<a name="line.124"></a> -<span class="sourceLineNo">125</span> if (size <= dataChunkSize) {<a name="line.125"></a> -<span class="sourceLineNo">126</span> // Using copyCellInto for cells which are bigger than the original maxAlloc<a name="line.126"></a> -<span class="sourceLineNo">127</span> Cell newCell = copyCellInto(cell, dataChunkSize);<a name="line.127"></a> -<span class="sourceLineNo">128</span> return newCell;<a name="line.128"></a> -<span class="sourceLineNo">129</span> } else {<a name="line.129"></a> -<span class="sourceLineNo">130</span> Chunk c = getNewExternalChunk(size);<a name="line.130"></a> -<span class="sourceLineNo">131</span> int allocOffset = c.alloc(size);<a name="line.131"></a> -<span class="sourceLineNo">132</span> return copyToChunkCell(cell, c.getData(), allocOffset, size);<a name="line.132"></a> -<span class="sourceLineNo">133</span> }<a name="line.133"></a> -<span class="sourceLineNo">134</span> }<a name="line.134"></a> -<span class="sourceLineNo">135</span><a name="line.135"></a> -<span class="sourceLineNo">136</span> private Cell copyCellInto(Cell cell, int maxAlloc) {<a name="line.136"></a> -<span class="sourceLineNo">137</span> int size = KeyValueUtil.length(cell);<a name="line.137"></a> -<span class="sourceLineNo">138</span> Preconditions.checkArgument(size >= 0, "negative size");<a name="line.138"></a> -<span class="sourceLineNo">139</span> // Callers should satisfy large allocations directly from JVM since they<a name="line.139"></a> -<span class="sourceLineNo">140</span> // don't cause fragmentation as badly.<a name="line.140"></a> -<span class="sourceLineNo">141</span> if (size > maxAlloc) {<a name="line.141"></a> -<span class="sourceLineNo">142</span> return null;<a name="line.142"></a> -<span class="sourceLineNo">143</span> }<a name="line.143"></a> -<span class="sourceLineNo">144</span> Chunk c = null;<a name="line.144"></a> -<span class="sourceLineNo">145</span> int allocOffset = 0;<a name="line.145"></a> -<span class="sourceLineNo">146</span> while (true) {<a name="line.146"></a> -<span class="sourceLineNo">147</span> // Try to get the chunk<a name="line.147"></a> -<span class="sourceLineNo">148</span> c = getOrMakeChunk();<a name="line.148"></a> -<span class="sourceLineNo">149</span> // we may get null because the some other thread succeeded in getting the lock<a name="line.149"></a> -<span class="sourceLineNo">150</span> // and so the current thread has to try again to make its chunk or grab the chunk<a name="line.150"></a> -<span class="sourceLineNo">151</span> // that the other thread created<a name="line.151"></a> -<span class="sourceLineNo">152</span> // Try to allocate from this chunk<a name="line.152"></a> -<span class="sourceLineNo">153</span> if (c != null) {<a name="line.153"></a> -<span class="sourceLineNo">154</span> allocOffset = c.alloc(size);<a name="line.154"></a> -<span class="sourceLineNo">155</span> if (allocOffset != -1) {<a name="line.155"></a> -<span class="sourceLineNo">156</span> // We succeeded - 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((ExtendedCell)cell).getSerializedSize():<a name="line.138"></a> +<span class="sourceLineNo">139</span> KeyValueUtil.length(cell);<a name="line.139"></a> +<span class="sourceLineNo">140</span> Preconditions.checkArgument(size >= 0, "negative size");<a name="line.140"></a> +<span class="sourceLineNo">141</span> // Callers should satisfy large allocations directly from JVM since they<a name="line.141"></a> +<span class="sourceLineNo">142</span> // don't cause fragmentation as badly.<a name="line.142"></a> +<span class="sourceLineNo">143</span> if (size > maxAlloc) {<a name="line.143"></a> +<span class="sourceLineNo">144</span> return null;<a name="line.144"></a> +<span class="sourceLineNo">145</span> }<a name="line.145"></a> +<span class="sourceLineNo">146</span> Chunk c = null;<a name="line.146"></a> +<span class="sourceLineNo">147</span> int allocOffset = 0;<a name="line.147"></a> +<span class="sourceLineNo">148</span> while (true) {<a name="line.148"></a> +<span class="sourceLineNo">149</span> // Try to get the chunk<a name="line.149"></a> +<span class="sourceLineNo">150</span> c = getOrMakeChunk();<a name="line.150"></a> +<span class="sourceLineNo">151</span> // we may get null because the some other thread succeeded in getting the lock<a name="line.151"></a> +<span class="sourceLineNo">152</span> // and so the current thread has to try again to make its chunk or grab the chunk<a name="line.152"></a> +<span class="sourceLineNo">153</span> // that the other thread created<a name="line.153"></a> +<span class="sourceLineNo">154</span> // Try to allocate from this chunk<a name="line.154"></a> +<span class="sourceLineNo">155</span> if (c != null) {<a name="line.155"></a> +<span class="sourceLineNo">156</span> allocOffset = c.alloc(size);<a name="line.156"></a> +<span class="sourceLineNo">157</span> if (allocOffset != -1) {<a name="line.157"></a> +<span class="sourceLineNo">158</span> // We succeeded - this is the common case - small alloc<a name="line.158"></a> +<span class="sourceLineNo">159</span> // from a big buffer<a name="line.159"></a> +<span class="sourceLineNo">160</span> break;<a name="line.160"></a> +<span class="sourceLineNo">161</span> }<a name="line.161"></a> +<span class="sourceLineNo">162</span> // not enough space!<a name="line.162"></a> +<span class="sourceLineNo">163</span> // try to retire this chunk<a name="line.163"></a> +<span class="sourceLineNo">164</span> tryRetireChunk(c);<a name="line.164"></a> +<span class="sourceLineNo">165</span> }<a name="line.165"></a> +<span class="sourceLineNo">166</span> }<a name="line.166"></a> +<span class="sourceLineNo">167</span> return copyToChunkCell(cell, c.getData(), allocOffset, size);<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> /**<a name="line.170"></a> +<span class="sourceLineNo">171</span> * Clone the passed cell by copying its data into the passed buf and create a cell with a chunkid<a name="line.171"></a> +<span class="sourceLineNo">172</span> * out of it<a name="line.172"></a> +<span class="sourceLineNo">173</span> */<a name="line.173"></a> +<span class="sourceLineNo">174</span> private static Cell copyToChunkCell(Cell cell, ByteBuffer buf, int offset, int len) {<a name="line.174"></a> +<span class="sourceLineNo">175</span> int tagsLen = cell.getTagsLength();<a name="line.175"></a> +<span class="sourceLineNo">176</span> if (cell instanceof ExtendedCell) {<a name="line.176"></a> +<span class="sourceLineNo">177</span> ((ExtendedCell) cell).write(buf, offset);<a name="line.177"></a> +<span class="sourceLineNo">178</span> } else {<a name="line.178"></a> +<span class="sourceLineNo">179</span> // Normally all Cell impls within Server will be of type ExtendedCell. 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This is an optimized class<a name="line.187"></a> +<span class="sourceLineNo">188</span> // which directly return tagsLen as 0. So we avoid parsing many length components in<a name="line.188"></a> +<span class="sourceLineNo">189</span> // reading the tagLength stored in the backing buffer. The Memstore addition of every Cell<a name="line.189"></a> +<span class="sourceLineNo">190</span> // call getTagsLength().<a name="line.190"></a> +<span class="sourceLineNo">191</span> return new NoTagByteBufferChunkKeyValue(buf, offset, len, cell.getSequenceId());<a name="line.191"></a> +<span class="sourceLineNo">192</span> } else {<a name="line.192"></a> +<span class="sourceLineNo">193</span> return new ByteBufferChunkKeyValue(buf, offset, len, cell.getSequenceId());<a name="line.193"></a> +<span class="sourceLineNo">194</span> }<a name="line.194"></a> +<span class="sourceLineNo">195</span> }<a name="line.195"></a> +<span class="sourceLineNo">196</span><a name="line.196"></a> +<span class="sourceLineNo">197</span> /**<a name="line.197"></a> +<span class="sourceLineNo">198</span> * Close this instance since it won't be used any more, try to put the chunks<a name="line.198"></a> +<span class="sourceLineNo">199</span> * back to pool<a name="line.199"></a> +<span class="sourceLineNo">200</span> */<a name="line.200"></a> +<span class="sourceLineNo">201</span> @Override<a name="line.201"></a> +<span class="sourceLineNo">202</span> public void close() {<a name="line.202"></a> +<span class="sourceLineNo">203</span> this.closed = true;<a name="line.203"></a> +<span class="sourceLineNo">204</span> // We could put back the chunks to pool for reusing only when there is no<a name="line.204"></a> +<span class="sourceLineNo">205</span> // opening scanner which will read their data<a name="line.205"></a> +<span class="sourceLineNo">206</span> int count = openScannerCount.get();<a name="line.206"></a> +<span class="sourceLineNo">207</span> if(count == 0) {<a name="line.207"></a> +<span class="sourceLineNo">208</span> recycleChunks();<a name="line.208"></a> +<span class="sourceLineNo">209</span> }<a name="line.209"></a> +<span class="sourceLineNo">210</span> }<a name="line.210"></a> +<span class="sourceLineNo">211</span><a name="line.211"></a> +<span class="sourceLineNo">212</span> /**<a name="line.212"></a> +<span class="sourceLineNo">213</span> * Called when opening a scanner on the data of this MemStoreLAB<a name="line.213"></a> +<span class="sourceLineNo">214</span> */<a name="line.214"></a> +<span class="sourceLineNo">215</span> @Override<a name="line.215"></a> +<span class="sourceLineNo">216</span> public void incScannerCount() {<a name="line.216"></a> +<span class="sourceLineNo">217</span> this.openScannerCount.incrementAndGet();<a name="line.217"></a> +<span class="sourceLineNo">218</span> }<a name="line.218"></a> +<span class="sourceLineNo">219</span><a name="line.219"></a> +<span class="sourceLineNo">220</span> /**<a name="line.220"></a> +<span class="sourceLineNo">221</span> * Called when closing a scanner on the data of this MemStoreLAB<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 void decScannerCount() {<a name="line.224"></a> +<span class="sourceLineNo">225</span> int count = this.openScannerCount.decrementAndGet();<a name="line.225"></a> +<span class="sourceLineNo">226</span> if (this.closed && count == 0) {<a name="line.226"></a> +<span class="sourceLineNo">227</span> recycleChunks();<a name="line.227"></a> +<span class="sourceLineNo">228</span> }<a name="line.228"></a> +<span class="sourceLineNo">229</span> }<a name="line.229"></a> +<span class="sourceLineNo">230</span><a name="line.230"></a> +<span class="sourceLineNo">231</span> private void recycleChunks() {<a name="line.231"></a> +<span class="sourceLineNo">232</span> if (reclaimed.compareAndSet(false, true)) {<a name="line.232"></a> +<span class="sourceLineNo">233</span> chunkCreator.putbackChunks(chunks);<a name="line.233"></a> +<span class="sourceLineNo">234</span> }<a name="line.234"></a> +<span class="sourceLineNo">235</span> }<a name="line.235"></a> +<span class="sourceLineNo">236</span><a name="line.236"></a> +<span class="sourceLineNo">237</span> /**<a name="line.237"></a> +<span class="sourceLineNo">238</span> * Try to retire the current chunk if it is still<a name="line.238"></a> +<span class="sourceLineNo">239</span> * <code>c</code>. 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class="sourceLineNo">299</span> chunks.add(c.getId());<a name="line.299"></a> +<span class="sourceLineNo">300</span> return c;<a name="line.300"></a> +<span class="sourceLineNo">301</span> case JUMBO_CHUNK: // a jumbo chunk doesn't have a fixed size<a name="line.301"></a> +<span class="sourceLineNo">302</span> default:<a name="line.302"></a> +<span class="sourceLineNo">303</span> return null;<a name="line.303"></a> +<span class="sourceLineNo">304</span> }<a name="line.304"></a> +<span class="sourceLineNo">305</span> }<a name="line.305"></a> +<span class="sourceLineNo">306</span><a name="line.306"></a> +<span class="sourceLineNo">307</span> /* Returning a new chunk, without replacing current chunk,<a name="line.307"></a> +<span class="sourceLineNo">308</span> ** meaning MSLABImpl does not make the returned chunk as CurChunk.<a name="line.308"></a> +<span class="sourceLineNo">309</span> ** The space on this chunk will be allocated externally.<a name="line.309"></a> +<span class="sourceLineNo">310</span> ** The interface is only for external callers.<a name="line.310"></a> +<span class="sourceLineNo">311</span> ** Chunks from pools are not allocated from here, since they have fixed sizes<a name="line.311"></a> +<span class="sourceLineNo">312</span> */<a name="line.312"></a> +<span class="sourceLineNo">313</span> @Override<a name="line.313"></a> +<span class="sourceLineNo">314</span> public Chunk getNewExternalChunk(int size) {<a name="line.314"></a> +<span class="sourceLineNo">315</span> int allocSize = size + ChunkCreator.getInstance().SIZEOF_CHUNK_HEADER;<a name="line.315"></a> +<span class="sourceLineNo">316</span> if (allocSize <= ChunkCreator.getInstance().getChunkSize()) {<a name="line.316"></a> +<span class="sourceLineNo">317</span> return getNewExternalChunk(ChunkCreator.ChunkType.DATA_CHUNK);<a name="line.317"></a> +<span class="sourceLineNo">318</span> } else {<a name="line.318"></a> +<span class="sourceLineNo">319</span> Chunk c = 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http://git-wip-us.apache.org/repos/asf/hbase-site/blob/883dde2f/devapidocs/src-html/org/apache/hadoop/hbase/replication/HBaseReplicationEndpoint.PeerRegionServerListener.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/replication/HBaseReplicationEndpoint.PeerRegionServerListener.html b/devapidocs/src-html/org/apache/hadoop/hbase/replication/HBaseReplicationEndpoint.PeerRegionServerListener.html index a588fcf..098dc5e 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/replication/HBaseReplicationEndpoint.PeerRegionServerListener.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/replication/HBaseReplicationEndpoint.PeerRegionServerListener.html @@ -51,197 +51,208 @@ <span class="sourceLineNo">043</span> * target cluster is an HBase cluster.<a name="line.43"></a> <span class="sourceLineNo">044</span> */<a name="line.44"></a> <span class="sourceLineNo">045</span>@InterfaceAudience.Private<a name="line.45"></a> -<span class="sourceLineNo">046</span>@edu.umd.cs.findbugs.annotations.SuppressWarnings(value="MT_CORRECTNESS",<a name="line.46"></a> -<span class="sourceLineNo">047</span> justification="Thinks zkw needs to be synchronized access but should be fine as is.")<a name="line.47"></a> -<span class="sourceLineNo">048</span>public abstract class HBaseReplicationEndpoint extends BaseReplicationEndpoint<a name="line.48"></a> -<span class="sourceLineNo">049</span> implements Abortable {<a name="line.49"></a> +<span class="sourceLineNo">046</span>public abstract class HBaseReplicationEndpoint extends BaseReplicationEndpoint<a name="line.46"></a> +<span class="sourceLineNo">047</span> implements Abortable {<a name="line.47"></a> +<span class="sourceLineNo">048</span><a name="line.48"></a> +<span class="sourceLineNo">049</span> private static final Logger LOG = LoggerFactory.getLogger(HBaseReplicationEndpoint.class);<a name="line.49"></a> <span class="sourceLineNo">050</span><a name="line.50"></a> -<span class="sourceLineNo">051</span> private static final Logger LOG = LoggerFactory.getLogger(HBaseReplicationEndpoint.class);<a name="line.51"></a> -<span class="sourceLineNo">052</span><a name="line.52"></a> -<span class="sourceLineNo">053</span> private ZKWatcher zkw = null; 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name="line.232"></a> +<span class="sourceLineNo">233</span> }<a name="line.233"></a> +<span class="sourceLineNo">234</span><a name="line.234"></a> +<span class="sourceLineNo">235</span> @Override<a name="line.235"></a> +<span class="sourceLineNo">236</span> public synchronized void nodeChildrenChanged(String path) {<a name="line.236"></a> +<span class="sourceLineNo">237</span> if (path.equals(regionServerListNode)) {<a name="line.237"></a> +<span class="sourceLineNo">238</span> try {<a name="line.238"></a> +<span class="sourceLineNo">239</span> LOG.info("Detected change to peer region servers, fetching updated list");<a name="line.239"></a> +<span class="sourceLineNo">240</span> replicationEndpoint.setRegionServers(fetchSlavesAddresses(replicationEndpoint.getZkw()));<a name="line.240"></a> +<span class="sourceLineNo">241</span> } catch (KeeperException e) {<a name="line.241"></a> +<span class="sourceLineNo">242</span> LOG.error("Error reading slave addresses", e);<a name="line.242"></a> +<span class="sourceLineNo">243</span> }<a name="line.243"></a> +<span class="sourceLineNo">244</span> }<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>}<a name="line.247"></a>
