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Posted to commits@hbase.apache.org by gi...@apache.org on 2018/07/11 16:22:35 UTC
[18/27] hbase-site git commit: Published site at
a838f7631f60d5c12736e8dae2856e1cc5a3bd99.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/c91fafb4/devapidocs/src-html/org/apache/hadoop/hbase/master/procedure/SchemaLocking.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/procedure/SchemaLocking.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/procedure/SchemaLocking.html
index c5213d7..ce02013 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/master/procedure/SchemaLocking.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/procedure/SchemaLocking.html
@@ -133,114 +133,109 @@
<span class="sourceLineNo">125</span><a name="line.125"></a>
<span class="sourceLineNo">126</span> List<Procedure<?>> waitingProcedures = new ArrayList<>();<a name="line.126"></a>
<span class="sourceLineNo">127</span><a name="line.127"></a>
-<span class="sourceLineNo">128</span> for (Procedure<?> procedure : queue) {<a name="line.128"></a>
-<span class="sourceLineNo">129</span> if (!(procedure instanceof LockProcedure)) {<a name="line.129"></a>
-<span class="sourceLineNo">130</span> continue;<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> waitingProcedures.add(procedure);<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> return new LockedResource(resourceType, resourceName, lockType, exclusiveLockOwnerProcedure,<a name="line.136"></a>
-<span class="sourceLineNo">137</span> sharedLockCount, waitingProcedures);<a name="line.137"></a>
-<span class="sourceLineNo">138</span> }<a name="line.138"></a>
-<span class="sourceLineNo">139</span><a name="line.139"></a>
-<span class="sourceLineNo">140</span> private <T> void addToLockedResources(List<LockedResource> lockedResources,<a name="line.140"></a>
-<span class="sourceLineNo">141</span> Map<T, LockAndQueue> locks, Function<T, String> keyTransformer,<a name="line.141"></a>
-<span class="sourceLineNo">142</span> LockedResourceType resourcesType) {<a name="line.142"></a>
-<span class="sourceLineNo">143</span> locks.entrySet().stream().filter(e -> e.getValue().isLocked())<a name="line.143"></a>
-<span class="sourceLineNo">144</span> .map(e -> createLockedResource(resourcesType, keyTransformer.apply(e.getKey()), e.getValue()))<a name="line.144"></a>
-<span class="sourceLineNo">145</span> .forEachOrdered(lockedResources::add);<a name="line.145"></a>
-<span class="sourceLineNo">146</span> }<a name="line.146"></a>
-<span class="sourceLineNo">147</span><a name="line.147"></a>
-<span class="sourceLineNo">148</span> /**<a name="line.148"></a>
-<span class="sourceLineNo">149</span> * List lock queues.<a name="line.149"></a>
-<span class="sourceLineNo">150</span> * @return the locks<a name="line.150"></a>
-<span class="sourceLineNo">151</span> */<a name="line.151"></a>
-<span class="sourceLineNo">152</span> List<LockedResource> getLocks() {<a name="line.152"></a>
-<span class="sourceLineNo">153</span> List<LockedResource> lockedResources = new ArrayList<>();<a name="line.153"></a>
-<span class="sourceLineNo">154</span> addToLockedResources(lockedResources, serverLocks, sn -> sn.getServerName(),<a name="line.154"></a>
-<span class="sourceLineNo">155</span> LockedResourceType.SERVER);<a name="line.155"></a>
-<span class="sourceLineNo">156</span> addToLockedResources(lockedResources, namespaceLocks, Function.identity(),<a name="line.156"></a>
-<span class="sourceLineNo">157</span> LockedResourceType.NAMESPACE);<a name="line.157"></a>
-<span class="sourceLineNo">158</span> addToLockedResources(lockedResources, tableLocks, tn -> tn.getNameAsString(),<a name="line.158"></a>
-<span class="sourceLineNo">159</span> LockedResourceType.TABLE);<a name="line.159"></a>
-<span class="sourceLineNo">160</span> addToLockedResources(lockedResources, regionLocks, Function.identity(),<a name="line.160"></a>
-<span class="sourceLineNo">161</span> LockedResourceType.REGION);<a name="line.161"></a>
-<span class="sourceLineNo">162</span> addToLockedResources(lockedResources, peerLocks, Function.identity(), LockedResourceType.PEER);<a name="line.162"></a>
-<span class="sourceLineNo">163</span> addToLockedResources(lockedResources, ImmutableMap.of(TableName.META_TABLE_NAME, metaLock),<a name="line.163"></a>
-<span class="sourceLineNo">164</span> tn -> tn.getNameAsString(), LockedResourceType.META);<a name="line.164"></a>
-<span class="sourceLineNo">165</span> return lockedResources;<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> * @return {@link LockedResource} for resource of specified type & name. null if resource is not<a name="line.169"></a>
-<span class="sourceLineNo">170</span> * locked.<a name="line.170"></a>
-<span class="sourceLineNo">171</span> */<a name="line.171"></a>
-<span class="sourceLineNo">172</span> LockedResource getLockResource(LockedResourceType resourceType, String resourceName) {<a name="line.172"></a>
-<span class="sourceLineNo">173</span> LockAndQueue queue;<a name="line.173"></a>
-<span class="sourceLineNo">174</span> switch (resourceType) {<a name="line.174"></a>
-<span class="sourceLineNo">175</span> case SERVER:<a name="line.175"></a>
-<span class="sourceLineNo">176</span> queue = serverLocks.get(ServerName.valueOf(resourceName));<a name="line.176"></a>
-<span class="sourceLineNo">177</span> break;<a name="line.177"></a>
-<span class="sourceLineNo">178</span> case NAMESPACE:<a name="line.178"></a>
-<span class="sourceLineNo">179</span> queue = namespaceLocks.get(resourceName);<a name="line.179"></a>
-<span class="sourceLineNo">180</span> break;<a name="line.180"></a>
-<span class="sourceLineNo">181</span> case TABLE:<a name="line.181"></a>
-<span class="sourceLineNo">182</span> queue = tableLocks.get(TableName.valueOf(resourceName));<a name="line.182"></a>
-<span class="sourceLineNo">183</span> break;<a name="line.183"></a>
-<span class="sourceLineNo">184</span> case REGION:<a name="line.184"></a>
-<span class="sourceLineNo">185</span> queue = regionLocks.get(resourceName);<a name="line.185"></a>
-<span class="sourceLineNo">186</span> break;<a name="line.186"></a>
-<span class="sourceLineNo">187</span> case PEER:<a name="line.187"></a>
-<span class="sourceLineNo">188</span> queue = peerLocks.get(resourceName);<a name="line.188"></a>
+<span class="sourceLineNo">128</span> queue.filterWaitingQueue(p -> p instanceof LockProcedure)<a name="line.128"></a>
+<span class="sourceLineNo">129</span> .forEachOrdered(waitingProcedures::add);<a name="line.129"></a>
+<span class="sourceLineNo">130</span><a name="line.130"></a>
+<span class="sourceLineNo">131</span> return new LockedResource(resourceType, resourceName, lockType, exclusiveLockOwnerProcedure,<a name="line.131"></a>
+<span class="sourceLineNo">132</span> sharedLockCount, waitingProcedures);<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> private <T> void addToLockedResources(List<LockedResource> lockedResources,<a name="line.135"></a>
+<span class="sourceLineNo">136</span> Map<T, LockAndQueue> locks, Function<T, String> keyTransformer,<a name="line.136"></a>
+<span class="sourceLineNo">137</span> LockedResourceType resourcesType) {<a name="line.137"></a>
+<span class="sourceLineNo">138</span> locks.entrySet().stream().filter(e -> e.getValue().isLocked())<a name="line.138"></a>
+<span class="sourceLineNo">139</span> .map(e -> createLockedResource(resourcesType, keyTransformer.apply(e.getKey()), e.getValue()))<a name="line.139"></a>
+<span class="sourceLineNo">140</span> .forEachOrdered(lockedResources::add);<a name="line.140"></a>
+<span class="sourceLineNo">141</span> }<a name="line.141"></a>
+<span class="sourceLineNo">142</span><a name="line.142"></a>
+<span class="sourceLineNo">143</span> /**<a name="line.143"></a>
+<span class="sourceLineNo">144</span> * List lock queues.<a name="line.144"></a>
+<span class="sourceLineNo">145</span> * @return the locks<a name="line.145"></a>
+<span class="sourceLineNo">146</span> */<a name="line.146"></a>
+<span class="sourceLineNo">147</span> List<LockedResource> getLocks() {<a name="line.147"></a>
+<span class="sourceLineNo">148</span> List<LockedResource> lockedResources = new ArrayList<>();<a name="line.148"></a>
+<span class="sourceLineNo">149</span> addToLockedResources(lockedResources, serverLocks, sn -> sn.getServerName(),<a name="line.149"></a>
+<span class="sourceLineNo">150</span> LockedResourceType.SERVER);<a name="line.150"></a>
+<span class="sourceLineNo">151</span> addToLockedResources(lockedResources, namespaceLocks, Function.identity(),<a name="line.151"></a>
+<span class="sourceLineNo">152</span> LockedResourceType.NAMESPACE);<a name="line.152"></a>
+<span class="sourceLineNo">153</span> addToLockedResources(lockedResources, tableLocks, tn -> tn.getNameAsString(),<a name="line.153"></a>
+<span class="sourceLineNo">154</span> LockedResourceType.TABLE);<a name="line.154"></a>
+<span class="sourceLineNo">155</span> addToLockedResources(lockedResources, regionLocks, Function.identity(),<a name="line.155"></a>
+<span class="sourceLineNo">156</span> LockedResourceType.REGION);<a name="line.156"></a>
+<span class="sourceLineNo">157</span> addToLockedResources(lockedResources, peerLocks, Function.identity(), LockedResourceType.PEER);<a name="line.157"></a>
+<span class="sourceLineNo">158</span> addToLockedResources(lockedResources, ImmutableMap.of(TableName.META_TABLE_NAME, metaLock),<a name="line.158"></a>
+<span class="sourceLineNo">159</span> tn -> tn.getNameAsString(), LockedResourceType.META);<a name="line.159"></a>
+<span class="sourceLineNo">160</span> return lockedResources;<a name="line.160"></a>
+<span class="sourceLineNo">161</span> }<a name="line.161"></a>
+<span class="sourceLineNo">162</span><a name="line.162"></a>
+<span class="sourceLineNo">163</span> /**<a name="line.163"></a>
+<span class="sourceLineNo">164</span> * @return {@link LockedResource} for resource of specified type & name. null if resource is not<a name="line.164"></a>
+<span class="sourceLineNo">165</span> * locked.<a name="line.165"></a>
+<span class="sourceLineNo">166</span> */<a name="line.166"></a>
+<span class="sourceLineNo">167</span> LockedResource getLockResource(LockedResourceType resourceType, String resourceName) {<a name="line.167"></a>
+<span class="sourceLineNo">168</span> LockAndQueue queue;<a name="line.168"></a>
+<span class="sourceLineNo">169</span> switch (resourceType) {<a name="line.169"></a>
+<span class="sourceLineNo">170</span> case SERVER:<a name="line.170"></a>
+<span class="sourceLineNo">171</span> queue = serverLocks.get(ServerName.valueOf(resourceName));<a name="line.171"></a>
+<span class="sourceLineNo">172</span> break;<a name="line.172"></a>
+<span class="sourceLineNo">173</span> case NAMESPACE:<a name="line.173"></a>
+<span class="sourceLineNo">174</span> queue = namespaceLocks.get(resourceName);<a name="line.174"></a>
+<span class="sourceLineNo">175</span> break;<a name="line.175"></a>
+<span class="sourceLineNo">176</span> case TABLE:<a name="line.176"></a>
+<span class="sourceLineNo">177</span> queue = tableLocks.get(TableName.valueOf(resourceName));<a name="line.177"></a>
+<span class="sourceLineNo">178</span> break;<a name="line.178"></a>
+<span class="sourceLineNo">179</span> case REGION:<a name="line.179"></a>
+<span class="sourceLineNo">180</span> queue = regionLocks.get(resourceName);<a name="line.180"></a>
+<span class="sourceLineNo">181</span> break;<a name="line.181"></a>
+<span class="sourceLineNo">182</span> case PEER:<a name="line.182"></a>
+<span class="sourceLineNo">183</span> queue = peerLocks.get(resourceName);<a name="line.183"></a>
+<span class="sourceLineNo">184</span> break;<a name="line.184"></a>
+<span class="sourceLineNo">185</span> case META:<a name="line.185"></a>
+<span class="sourceLineNo">186</span> queue = metaLock;<a name="line.186"></a>
+<span class="sourceLineNo">187</span> default:<a name="line.187"></a>
+<span class="sourceLineNo">188</span> queue = null;<a name="line.188"></a>
<span class="sourceLineNo">189</span> break;<a name="line.189"></a>
-<span class="sourceLineNo">190</span> case META:<a name="line.190"></a>
-<span class="sourceLineNo">191</span> queue = metaLock;<a name="line.191"></a>
-<span class="sourceLineNo">192</span> default:<a name="line.192"></a>
-<span class="sourceLineNo">193</span> queue = null;<a name="line.193"></a>
-<span class="sourceLineNo">194</span> break;<a name="line.194"></a>
-<span class="sourceLineNo">195</span> }<a name="line.195"></a>
-<span class="sourceLineNo">196</span> return queue != null ? createLockedResource(resourceType, resourceName, queue) : null;<a name="line.196"></a>
-<span class="sourceLineNo">197</span> }<a name="line.197"></a>
-<span class="sourceLineNo">198</span><a name="line.198"></a>
-<span class="sourceLineNo">199</span> /**<a name="line.199"></a>
-<span class="sourceLineNo">200</span> * Removes all locks by clearing the maps. Used when procedure executor is stopped for failure and<a name="line.200"></a>
-<span class="sourceLineNo">201</span> * recovery testing.<a name="line.201"></a>
-<span class="sourceLineNo">202</span> */<a name="line.202"></a>
-<span class="sourceLineNo">203</span> void clear() {<a name="line.203"></a>
-<span class="sourceLineNo">204</span> serverLocks.clear();<a name="line.204"></a>
-<span class="sourceLineNo">205</span> namespaceLocks.clear();<a name="line.205"></a>
-<span class="sourceLineNo">206</span> tableLocks.clear();<a name="line.206"></a>
-<span class="sourceLineNo">207</span> regionLocks.clear();<a name="line.207"></a>
-<span class="sourceLineNo">208</span> peerLocks.clear();<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> @Override<a name="line.211"></a>
-<span class="sourceLineNo">212</span> public String toString() {<a name="line.212"></a>
-<span class="sourceLineNo">213</span> return "serverLocks=" + filterUnlocked(this.serverLocks) + ", namespaceLocks=" +<a name="line.213"></a>
-<span class="sourceLineNo">214</span> filterUnlocked(this.namespaceLocks) + ", tableLocks=" + filterUnlocked(this.tableLocks) +<a name="line.214"></a>
-<span class="sourceLineNo">215</span> ", regionLocks=" + filterUnlocked(this.regionLocks) + ", peerLocks=" +<a name="line.215"></a>
-<span class="sourceLineNo">216</span> filterUnlocked(this.peerLocks) + ", metaLocks=" +<a name="line.216"></a>
-<span class="sourceLineNo">217</span> filterUnlocked(ImmutableMap.of(TableName.META_TABLE_NAME, metaLock));<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> private String filterUnlocked(Map<?, LockAndQueue> locks) {<a name="line.220"></a>
-<span class="sourceLineNo">221</span> StringBuilder sb = new StringBuilder("{");<a name="line.221"></a>
-<span class="sourceLineNo">222</span> int initialLength = sb.length();<a name="line.222"></a>
-<span class="sourceLineNo">223</span> for (Map.Entry<?, LockAndQueue> entry : locks.entrySet()) {<a name="line.223"></a>
-<span class="sourceLineNo">224</span> if (!entry.getValue().isLocked()) {<a name="line.224"></a>
-<span class="sourceLineNo">225</span> continue;<a name="line.225"></a>
-<span class="sourceLineNo">226</span> }<a name="line.226"></a>
-<span class="sourceLineNo">227</span> if (sb.length() > initialLength) {<a name="line.227"></a>
-<span class="sourceLineNo">228</span> sb.append(", ");<a name="line.228"></a>
-<span class="sourceLineNo">229</span> }<a name="line.229"></a>
-<span class="sourceLineNo">230</span> sb.append("{").append(entry.getKey()).append("=").append(entry.getValue()).append("}");<a name="line.230"></a>
-<span class="sourceLineNo">231</span> }<a name="line.231"></a>
-<span class="sourceLineNo">232</span> sb.append("}");<a name="line.232"></a>
-<span class="sourceLineNo">233</span> return sb.toString();<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">190</span> }<a name="line.190"></a>
+<span class="sourceLineNo">191</span> return queue != null ? createLockedResource(resourceType, resourceName, queue) : null;<a name="line.191"></a>
+<span class="sourceLineNo">192</span> }<a name="line.192"></a>
+<span class="sourceLineNo">193</span><a name="line.193"></a>
+<span class="sourceLineNo">194</span> /**<a name="line.194"></a>
+<span class="sourceLineNo">195</span> * Removes all locks by clearing the maps. Used when procedure executor is stopped for failure and<a name="line.195"></a>
+<span class="sourceLineNo">196</span> * recovery testing.<a name="line.196"></a>
+<span class="sourceLineNo">197</span> */<a name="line.197"></a>
+<span class="sourceLineNo">198</span> void clear() {<a name="line.198"></a>
+<span class="sourceLineNo">199</span> serverLocks.clear();<a name="line.199"></a>
+<span class="sourceLineNo">200</span> namespaceLocks.clear();<a name="line.200"></a>
+<span class="sourceLineNo">201</span> tableLocks.clear();<a name="line.201"></a>
+<span class="sourceLineNo">202</span> regionLocks.clear();<a name="line.202"></a>
+<span class="sourceLineNo">203</span> peerLocks.clear();<a name="line.203"></a>
+<span class="sourceLineNo">204</span> }<a name="line.204"></a>
+<span class="sourceLineNo">205</span><a name="line.205"></a>
+<span class="sourceLineNo">206</span> @Override<a name="line.206"></a>
+<span class="sourceLineNo">207</span> public String toString() {<a name="line.207"></a>
+<span class="sourceLineNo">208</span> return "serverLocks=" + filterUnlocked(this.serverLocks) + ", namespaceLocks=" +<a name="line.208"></a>
+<span class="sourceLineNo">209</span> filterUnlocked(this.namespaceLocks) + ", tableLocks=" + filterUnlocked(this.tableLocks) +<a name="line.209"></a>
+<span class="sourceLineNo">210</span> ", regionLocks=" + filterUnlocked(this.regionLocks) + ", peerLocks=" +<a name="line.210"></a>
+<span class="sourceLineNo">211</span> filterUnlocked(this.peerLocks) + ", metaLocks=" +<a name="line.211"></a>
+<span class="sourceLineNo">212</span> filterUnlocked(ImmutableMap.of(TableName.META_TABLE_NAME, metaLock));<a name="line.212"></a>
+<span class="sourceLineNo">213</span> }<a name="line.213"></a>
+<span class="sourceLineNo">214</span><a name="line.214"></a>
+<span class="sourceLineNo">215</span> private String filterUnlocked(Map<?, LockAndQueue> locks) {<a name="line.215"></a>
+<span class="sourceLineNo">216</span> StringBuilder sb = new StringBuilder("{");<a name="line.216"></a>
+<span class="sourceLineNo">217</span> int initialLength = sb.length();<a name="line.217"></a>
+<span class="sourceLineNo">218</span> for (Map.Entry<?, LockAndQueue> entry : locks.entrySet()) {<a name="line.218"></a>
+<span class="sourceLineNo">219</span> if (!entry.getValue().isLocked()) {<a name="line.219"></a>
+<span class="sourceLineNo">220</span> continue;<a name="line.220"></a>
+<span class="sourceLineNo">221</span> }<a name="line.221"></a>
+<span class="sourceLineNo">222</span> if (sb.length() > initialLength) {<a name="line.222"></a>
+<span class="sourceLineNo">223</span> sb.append(", ");<a name="line.223"></a>
+<span class="sourceLineNo">224</span> }<a name="line.224"></a>
+<span class="sourceLineNo">225</span> sb.append("{").append(entry.getKey()).append("=").append(entry.getValue()).append("}");<a name="line.225"></a>
+<span class="sourceLineNo">226</span> }<a name="line.226"></a>
+<span class="sourceLineNo">227</span> sb.append("}");<a name="line.227"></a>
+<span class="sourceLineNo">228</span> return sb.toString();<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>
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/c91fafb4/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/AbstractProcedureScheduler.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/AbstractProcedureScheduler.html b/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/AbstractProcedureScheduler.html
index 2f00696..463af4b 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/AbstractProcedureScheduler.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/AbstractProcedureScheduler.html
@@ -261,46 +261,42 @@
<span class="sourceLineNo">253</span> * Wakes up given waiting procedures by pushing them back into scheduler queues.<a name="line.253"></a>
<span class="sourceLineNo">254</span> * @return size of given {@code waitQueue}.<a name="line.254"></a>
<span class="sourceLineNo">255</span> */<a name="line.255"></a>
-<span class="sourceLineNo">256</span> protected int wakeWaitingProcedures(final ProcedureDeque waitQueue) {<a name="line.256"></a>
-<span class="sourceLineNo">257</span> int count = waitQueue.size();<a name="line.257"></a>
-<span class="sourceLineNo">258</span> // wakeProcedure adds to the front of queue, so we start from last in the<a name="line.258"></a>
-<span class="sourceLineNo">259</span> // waitQueue' queue, so that the procedure which was added first goes in the front for<a name="line.259"></a>
-<span class="sourceLineNo">260</span> // the scheduler queue.<a name="line.260"></a>
-<span class="sourceLineNo">261</span> addFront(waitQueue.descendingIterator());<a name="line.261"></a>
-<span class="sourceLineNo">262</span> waitQueue.clear();<a name="line.262"></a>
-<span class="sourceLineNo">263</span> return count;<a name="line.263"></a>
-<span class="sourceLineNo">264</span> }<a name="line.264"></a>
-<span class="sourceLineNo">265</span><a name="line.265"></a>
-<span class="sourceLineNo">266</span> protected void waitProcedure(final ProcedureDeque waitQueue, final Procedure proc) {<a name="line.266"></a>
-<span class="sourceLineNo">267</span> waitQueue.addLast(proc);<a name="line.267"></a>
-<span class="sourceLineNo">268</span> }<a name="line.268"></a>
+<span class="sourceLineNo">256</span> protected int wakeWaitingProcedures(LockAndQueue lockAndQueue) {<a name="line.256"></a>
+<span class="sourceLineNo">257</span> return lockAndQueue.wakeWaitingProcedures(this);<a name="line.257"></a>
+<span class="sourceLineNo">258</span> }<a name="line.258"></a>
+<span class="sourceLineNo">259</span><a name="line.259"></a>
+<span class="sourceLineNo">260</span> protected void waitProcedure(LockAndQueue lockAndQueue, final Procedure proc) {<a name="line.260"></a>
+<span class="sourceLineNo">261</span> lockAndQueue.addLast(proc);<a name="line.261"></a>
+<span class="sourceLineNo">262</span> }<a name="line.262"></a>
+<span class="sourceLineNo">263</span><a name="line.263"></a>
+<span class="sourceLineNo">264</span> protected void wakeProcedure(final Procedure procedure) {<a name="line.264"></a>
+<span class="sourceLineNo">265</span> LOG.trace("Wake {}", procedure);<a name="line.265"></a>
+<span class="sourceLineNo">266</span> push(procedure, /* addFront= */ true, /* notify= */false);<a name="line.266"></a>
+<span class="sourceLineNo">267</span> }<a name="line.267"></a>
+<span class="sourceLineNo">268</span><a name="line.268"></a>
<span class="sourceLineNo">269</span><a name="line.269"></a>
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+<span class="sourceLineNo">270</span> // ==========================================================================<a name="line.270"></a>
+<span class="sourceLineNo">271</span> // Internal helpers<a name="line.271"></a>
+<span class="sourceLineNo">272</span> // ==========================================================================<a name="line.272"></a>
+<span class="sourceLineNo">273</span> protected void schedLock() {<a name="line.273"></a>
+<span class="sourceLineNo">274</span> schedulerLock.lock();<a name="line.274"></a>
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+<span class="sourceLineNo">277</span> protected void schedUnlock() {<a name="line.277"></a>
+<span class="sourceLineNo">278</span> schedulerLock.unlock();<a name="line.278"></a>
+<span class="sourceLineNo">279</span> }<a name="line.279"></a>
+<span class="sourceLineNo">280</span><a name="line.280"></a>
+<span class="sourceLineNo">281</span> protected void wakePollIfNeeded(final int waitingCount) {<a name="line.281"></a>
+<span class="sourceLineNo">282</span> if (waitingCount <= 0) {<a name="line.282"></a>
+<span class="sourceLineNo">283</span> return;<a name="line.283"></a>
+<span class="sourceLineNo">284</span> }<a name="line.284"></a>
+<span class="sourceLineNo">285</span> if (waitingCount == 1) {<a name="line.285"></a>
+<span class="sourceLineNo">286</span> schedWaitCond.signal();<a name="line.286"></a>
+<span class="sourceLineNo">287</span> } else {<a name="line.287"></a>
+<span class="sourceLineNo">288</span> schedWaitCond.signalAll();<a name="line.288"></a>
+<span class="sourceLineNo">289</span> }<a name="line.289"></a>
+<span class="sourceLineNo">290</span> }<a name="line.290"></a>
+<span class="sourceLineNo">291</span>}<a name="line.291"></a>
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/c91fafb4/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/LockAndQueue.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/LockAndQueue.html b/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/LockAndQueue.html
index 52b81f3..6df87bb 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/LockAndQueue.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/LockAndQueue.html
@@ -26,123 +26,178 @@
<span class="sourceLineNo">018</span><a name="line.18"></a>
<span class="sourceLineNo">019</span>package org.apache.hadoop.hbase.procedure2;<a name="line.19"></a>
<span class="sourceLineNo">020</span><a name="line.20"></a>
-<span class="sourceLineNo">021</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.21"></a>
-<span class="sourceLineNo">022</span><a name="line.22"></a>
-<span class="sourceLineNo">023</span>/**<a name="line.23"></a>
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-<span class="sourceLineNo">025</span> * {@link LockAndQueue} has two purposes:<a name="line.25"></a>
-<span class="sourceLineNo">026</span> * <ol><a name="line.26"></a>
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-<span class="sourceLineNo">029</span> * {@link LockAndQueue} extends {@link ProcedureDeque} class. Blocked Procedures are added<a name="line.29"></a>
-<span class="sourceLineNo">030</span> * to our super Deque. Using inheritance over composition to keep the Deque of waiting<a name="line.30"></a>
-<span class="sourceLineNo">031</span> * Procedures is unusual, but we do it this way because in certain cases, there will be<a name="line.31"></a>
-<span class="sourceLineNo">032</span> * millions of regions. This layout uses less memory.<a name="line.32"></a>
-<span class="sourceLineNo">033</span> * </ol><a name="line.33"></a>
-<span class="sourceLineNo">034</span> *<a name="line.34"></a>
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-<span class="sourceLineNo">036</span> * guarded by schedLock().<a name="line.36"></a>
-<span class="sourceLineNo">037</span> * <br><a name="line.37"></a>
-<span class="sourceLineNo">038</span> * There is no need of 'volatile' keyword for member variables because of memory synchronization<a name="line.38"></a>
-<span class="sourceLineNo">039</span> * guarantees of locks (see 'Memory Synchronization',<a name="line.39"></a>
-<span class="sourceLineNo">040</span> * http://docs.oracle.com/javase/8/docs/api/java/util/concurrent/locks/Lock.html)<a name="line.40"></a>
-<span class="sourceLineNo">041</span> * <br><a name="line.41"></a>
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-<span class="sourceLineNo">043</span> * because try-lock functions require procedure id.<a name="line.43"></a>
-<span class="sourceLineNo">044</span> * <br><a name="line.44"></a>
-<span class="sourceLineNo">045</span> * We do not use ReentrantReadWriteLock directly because of its high memory overhead.<a name="line.45"></a>
-<span class="sourceLineNo">046</span> */<a name="line.46"></a>
-<span class="sourceLineNo">047</span>@InterfaceAudience.Private<a name="line.47"></a>
-<span class="sourceLineNo">048</span>public class LockAndQueue extends ProcedureDeque implements LockStatus {<a name="line.48"></a>
-<span class="sourceLineNo">049</span> private Procedure<?> exclusiveLockOwnerProcedure = null;<a name="line.49"></a>
-<span class="sourceLineNo">050</span> private int sharedLock = 0;<a name="line.50"></a>
-<span class="sourceLineNo">051</span><a name="line.51"></a>
-<span class="sourceLineNo">052</span> // ======================================================================<a name="line.52"></a>
-<span class="sourceLineNo">053</span> // Lock Status<a name="line.53"></a>
-<span class="sourceLineNo">054</span> // ======================================================================<a name="line.54"></a>
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-<span class="sourceLineNo">078</span> return isLockOwner(proc.getProcId()) || hasParentLock(proc);<a name="line.78"></a>
+<span class="sourceLineNo">021</span>import java.util.function.Predicate;<a name="line.21"></a>
+<span class="sourceLineNo">022</span>import java.util.stream.Stream;<a name="line.22"></a>
+<span class="sourceLineNo">023</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.23"></a>
+<span class="sourceLineNo">024</span><a name="line.24"></a>
+<span class="sourceLineNo">025</span>/**<a name="line.25"></a>
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+<span class="sourceLineNo">028</span> * <ol><a name="line.28"></a>
+<span class="sourceLineNo">029</span> * <li>Acquire/release exclusive/shared locks.</li><a name="line.29"></a>
+<span class="sourceLineNo">030</span> * <li>Maintains a list of procedures waiting on this lock.<a name="line.30"></a>
+<span class="sourceLineNo">031</span> * {@link LockAndQueue} extends {@link ProcedureDeque} class. Blocked Procedures are added<a name="line.31"></a>
+<span class="sourceLineNo">032</span> * to our super Deque. Using inheritance over composition to keep the Deque of waiting<a name="line.32"></a>
+<span class="sourceLineNo">033</span> * Procedures is unusual, but we do it this way because in certain cases, there will be<a name="line.33"></a>
+<span class="sourceLineNo">034</span> * millions of regions. This layout uses less memory.<a name="line.34"></a>
+<span class="sourceLineNo">035</span> * </ol><a name="line.35"></a>
+<span class="sourceLineNo">036</span> *<a name="line.36"></a>
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+<span class="sourceLineNo">038</span> * guarded by schedLock().<a name="line.38"></a>
+<span class="sourceLineNo">039</span> * <br><a name="line.39"></a>
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+<span class="sourceLineNo">041</span> * guarantees of locks (see 'Memory Synchronization',<a name="line.41"></a>
+<span class="sourceLineNo">042</span> * http://docs.oracle.com/javase/8/docs/api/java/util/concurrent/locks/Lock.html)<a name="line.42"></a>
+<span class="sourceLineNo">043</span> * <br><a name="line.43"></a>
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+<span class="sourceLineNo">046</span> * <br><a name="line.46"></a>
+<span class="sourceLineNo">047</span> * We do not use ReentrantReadWriteLock directly because of its high memory overhead.<a name="line.47"></a>
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+<span class="sourceLineNo">049</span>@InterfaceAudience.Private<a name="line.49"></a>
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+<span class="sourceLineNo">051</span> private final ProcedureDeque queue = new ProcedureDeque();<a name="line.51"></a>
+<span class="sourceLineNo">052</span> private Procedure<?> exclusiveLockOwnerProcedure = null;<a name="line.52"></a>
+<span class="sourceLineNo">053</span> private int sharedLock = 0;<a name="line.53"></a>
+<span class="sourceLineNo">054</span><a name="line.54"></a>
+<span class="sourceLineNo">055</span> // ======================================================================<a name="line.55"></a>
+<span class="sourceLineNo">056</span> // Lock Status<a name="line.56"></a>
+<span class="sourceLineNo">057</span> // ======================================================================<a name="line.57"></a>
+<span class="sourceLineNo">058</span><a name="line.58"></a>
+<span class="sourceLineNo">059</span> @Override<a name="line.59"></a>
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+<span class="sourceLineNo">062</span> }<a name="line.62"></a>
+<span class="sourceLineNo">063</span><a name="line.63"></a>
+<span class="sourceLineNo">064</span> @Override<a name="line.64"></a>
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+<span class="sourceLineNo">077</span> return proc.hasParent() &&<a name="line.77"></a>
+<span class="sourceLineNo">078</span> (isLockOwner(proc.getParentProcId()) || isLockOwner(proc.getRootProcId()));<a name="line.78"></a>
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-<span class="sourceLineNo">136</span> }<a name="line.136"></a>
-<span class="sourceLineNo">137</span>}<a name="line.137"></a>
+<span class="sourceLineNo">100</span> @Override<a name="line.100"></a>
+<span class="sourceLineNo">101</span> public int getSharedLockCount() {<a name="line.101"></a>
+<span class="sourceLineNo">102</span> return sharedLock;<a name="line.102"></a>
+<span class="sourceLineNo">103</span> }<a name="line.103"></a>
+<span class="sourceLineNo">104</span><a name="line.104"></a>
+<span class="sourceLineNo">105</span> // ======================================================================<a name="line.105"></a>
+<span class="sourceLineNo">106</span> // try/release Shared/Exclusive lock<a name="line.106"></a>
+<span class="sourceLineNo">107</span> // ======================================================================<a name="line.107"></a>
+<span class="sourceLineNo">108</span><a name="line.108"></a>
+<span class="sourceLineNo">109</span> /**<a name="line.109"></a>
+<span class="sourceLineNo">110</span> * @return whether we have succesfully acquired the shared lock.<a name="line.110"></a>
+<span class="sourceLineNo">111</span> */<a name="line.111"></a>
+<span class="sourceLineNo">112</span> public boolean trySharedLock(Procedure<?> proc) {<a name="line.112"></a>
+<span class="sourceLineNo">113</span> if (hasExclusiveLock() && !hasLockAccess(proc)) {<a name="line.113"></a>
+<span class="sourceLineNo">114</span> return false;<a name="line.114"></a>
+<span class="sourceLineNo">115</span> }<a name="line.115"></a>
+<span class="sourceLineNo">116</span> // If no one holds the xlock, then we are free to hold the sharedLock<a name="line.116"></a>
+<span class="sourceLineNo">117</span> // If the parent proc or we have already held the xlock, then we return true here as<a name="line.117"></a>
+<span class="sourceLineNo">118</span> // xlock is more powerful then shared lock.<a name="line.118"></a>
+<span class="sourceLineNo">119</span> sharedLock++;<a name="line.119"></a>
+<span class="sourceLineNo">120</span> return true;<a name="line.120"></a>
+<span class="sourceLineNo">121</span> }<a name="line.121"></a>
+<span class="sourceLineNo">122</span><a name="line.122"></a>
+<span class="sourceLineNo">123</span> /**<a name="line.123"></a>
+<span class="sourceLineNo">124</span> * @return whether we should wake the procedures waiting on the lock here.<a name="line.124"></a>
+<span class="sourceLineNo">125</span> */<a name="line.125"></a>
+<span class="sourceLineNo">126</span> public boolean releaseSharedLock() {<a name="line.126"></a>
+<span class="sourceLineNo">127</span> // hasExclusiveLock could be true, it usually means we acquire shared lock while we or our<a name="line.127"></a>
+<span class="sourceLineNo">128</span> // parent have held the xlock. And since there is still an exclusive lock, we do not need to<a name="line.128"></a>
+<span class="sourceLineNo">129</span> // wake any procedures.<a name="line.129"></a>
+<span class="sourceLineNo">130</span> return --sharedLock == 0 && !hasExclusiveLock();<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> public boolean tryExclusiveLock(Procedure<?> proc) {<a name="line.133"></a>
+<span class="sourceLineNo">134</span> if (isLocked()) {<a name="line.134"></a>
+<span class="sourceLineNo">135</span> return hasLockAccess(proc);<a name="line.135"></a>
+<span class="sourceLineNo">136</span> }<a name="line.136"></a>
+<span class="sourceLineNo">137</span> exclusiveLockOwnerProcedure = proc;<a name="line.137"></a>
+<span class="sourceLineNo">138</span> return true;<a name="line.138"></a>
+<span class="sourceLineNo">139</span> }<a name="line.139"></a>
+<span class="sourceLineNo">140</span><a name="line.140"></a>
+<span class="sourceLineNo">141</span> /**<a name="line.141"></a>
+<span class="sourceLineNo">142</span> * @return whether we should wake the procedures waiting on the lock here.<a name="line.142"></a>
+<span class="sourceLineNo">143</span> */<a name="line.143"></a>
+<span class="sourceLineNo">144</span> public boolean releaseExclusiveLock(Procedure<?> proc) {<a name="line.144"></a>
+<span class="sourceLineNo">145</span> if (!isLockOwner(proc.getProcId())) {<a name="line.145"></a>
+<span class="sourceLineNo">146</span> // We are not the lock owner, it is probably inherited from the parent procedures.<a name="line.146"></a>
+<span class="sourceLineNo">147</span> return false;<a name="line.147"></a>
+<span class="sourceLineNo">148</span> }<a name="line.148"></a>
+<span class="sourceLineNo">149</span> exclusiveLockOwnerProcedure = null;<a name="line.149"></a>
+<span class="sourceLineNo">150</span> // This maybe a bit strange so let me explain. We allow acquiring shared lock while the parent<a name="line.150"></a>
+<span class="sourceLineNo">151</span> // proc or we have already held the xlock, and also allow releasing the locks in any order, so<a name="line.151"></a>
+<span class="sourceLineNo">152</span> // it could happen that the xlock is released but there are still some procs holding the shared<a name="line.152"></a>
+<span class="sourceLineNo">153</span> // lock.<a name="line.153"></a>
+<span class="sourceLineNo">154</span> // In HBase, this could happen when a proc which holdLock is false and schedules sub procs which<a name="line.154"></a>
+<span class="sourceLineNo">155</span> // acquire the shared lock on the same lock. This is because we will schedule the sub proces<a name="line.155"></a>
+<span class="sourceLineNo">156</span> // before releasing the lock, so the sub procs could call acquire lock before we releasing the<a name="line.156"></a>
+<span class="sourceLineNo">157</span> // xlock.<a name="line.157"></a>
+<span class="sourceLineNo">158</span> return sharedLock == 0;<a name="line.158"></a>
+<span class="sourceLineNo">159</span> }<a name="line.159"></a>
+<span class="sourceLineNo">160</span><a name="line.160"></a>
+<span class="sourceLineNo">161</span> public boolean isWaitingQueueEmpty() {<a name="line.161"></a>
+<span class="sourceLineNo">162</span> return queue.isEmpty();<a name="line.162"></a>
+<span class="sourceLineNo">163</span> }<a name="line.163"></a>
+<span class="sourceLineNo">164</span><a name="line.164"></a>
+<span class="sourceLineNo">165</span> public Procedure<?> removeFirst() {<a name="line.165"></a>
+<span class="sourceLineNo">166</span> return queue.removeFirst();<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> public void addLast(Procedure<?> proc) {<a name="line.169"></a>
+<span class="sourceLineNo">170</span> queue.addLast(proc);<a name="line.170"></a>
+<span class="sourceLineNo">171</span> }<a name="line.171"></a>
+<span class="sourceLineNo">172</span><a name="line.172"></a>
+<span class="sourceLineNo">173</span> public int wakeWaitingProcedures(ProcedureScheduler scheduler) {<a name="line.173"></a>
+<span class="sourceLineNo">174</span> int count = queue.size();<a name="line.174"></a>
+<span class="sourceLineNo">175</span> // wakeProcedure adds to the front of queue, so we start from last in the waitQueue' queue, so<a name="line.175"></a>
+<span class="sourceLineNo">176</span> // that the procedure which was added first goes in the front for the scheduler queue.<a name="line.176"></a>
+<span class="sourceLineNo">177</span> scheduler.addFront(queue.descendingIterator());<a name="line.177"></a>
+<span class="sourceLineNo">178</span> queue.clear();<a name="line.178"></a>
+<span class="sourceLineNo">179</span> return count;<a name="line.179"></a>
+<span class="sourceLineNo">180</span> }<a name="line.180"></a>
+<span class="sourceLineNo">181</span><a name="line.181"></a>
+<span class="sourceLineNo">182</span> @SuppressWarnings("rawtypes")<a name="line.182"></a>
+<span class="sourceLineNo">183</span> public Stream<Procedure> filterWaitingQueue(Predicate<Procedure> predicate) {<a name="line.183"></a>
+<span class="sourceLineNo">184</span> return queue.stream().filter(predicate);<a name="line.184"></a>
+<span class="sourceLineNo">185</span> }<a name="line.185"></a>
+<span class="sourceLineNo">186</span><a name="line.186"></a>
+<span class="sourceLineNo">187</span> @Override<a name="line.187"></a>
+<span class="sourceLineNo">188</span> public String toString() {<a name="line.188"></a>
+<span class="sourceLineNo">189</span> return "exclusiveLockOwner=" + (hasExclusiveLock() ? getExclusiveLockProcIdOwner() : "NONE") +<a name="line.189"></a>
+<span class="sourceLineNo">190</span> ", sharedLockCount=" + getSharedLockCount() + ", waitingProcCount=" + queue.size();<a name="line.190"></a>
+<span class="sourceLineNo">191</span> }<a name="line.191"></a>
+<span class="sourceLineNo">192</span>}<a name="line.192"></a>
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/c91fafb4/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/LockStatus.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/LockStatus.html b/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/LockStatus.html
index 7761ccb..b8676a4 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/LockStatus.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/LockStatus.html
@@ -41,9 +41,9 @@
<span class="sourceLineNo">033</span><a name="line.33"></a>
<span class="sourceLineNo">034</span> boolean isLockOwner(long procId);<a name="line.34"></a>
<span class="sourceLineNo">035</span><a name="line.35"></a>
-<span class="sourceLineNo">036</span> boolean hasParentLock(final Procedure proc);<a name="line.36"></a>
+<span class="sourceLineNo">036</span> boolean hasParentLock(Procedure<?> proc);<a name="line.36"></a>
<span class="sourceLineNo">037</span><a name="line.37"></a>
-<span class="sourceLineNo">038</span> boolean hasLockAccess(final Procedure proc);<a name="line.38"></a>
+<span class="sourceLineNo">038</span> boolean hasLockAccess(Procedure<?> proc);<a name="line.38"></a>
<span class="sourceLineNo">039</span><a name="line.39"></a>
<span class="sourceLineNo">040</span> Procedure<?> getExclusiveLockOwnerProcedure();<a name="line.40"></a>
<span class="sourceLineNo">041</span><a name="line.41"></a>