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Posted to commits@hbase.apache.org by gi...@apache.org on 2018/05/01 14:47:26 UTC
[13/24] hbase-site git commit: Published site at
7790ab156eabbea4527ec8e5a1c39430398bed0c.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/40477ee9/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignProcedure.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignProcedure.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignProcedure.html
index 6c3402f..bada433 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignProcedure.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignProcedure.html
@@ -142,265 +142,273 @@
<span class="sourceLineNo">134</span> if (this.targetServer != null) {<a name="line.134"></a>
<span class="sourceLineNo">135</span> state.setTargetServer(ProtobufUtil.toServerName(this.targetServer));<a name="line.135"></a>
<span class="sourceLineNo">136</span> }<a name="line.136"></a>
-<span class="sourceLineNo">137</span> serializer.serialize(state.build());<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> @Override<a name="line.140"></a>
-<span class="sourceLineNo">141</span> protected void deserializeStateData(ProcedureStateSerializer serializer)<a name="line.141"></a>
-<span class="sourceLineNo">142</span> throws IOException {<a name="line.142"></a>
-<span class="sourceLineNo">143</span> final AssignRegionStateData state = serializer.deserialize(AssignRegionStateData.class);<a name="line.143"></a>
-<span class="sourceLineNo">144</span> setTransitionState(state.getTransitionState());<a name="line.144"></a>
-<span class="sourceLineNo">145</span> setRegionInfo(ProtobufUtil.toRegionInfo(state.getRegionInfo()));<a name="line.145"></a>
-<span class="sourceLineNo">146</span> forceNewPlan = state.getForceNewPlan();<a name="line.146"></a>
-<span class="sourceLineNo">147</span> if (state.hasTargetServer()) {<a name="line.147"></a>
-<span class="sourceLineNo">148</span> this.targetServer = ProtobufUtil.toServerName(state.getTargetServer());<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> @Override<a name="line.152"></a>
-<span class="sourceLineNo">153</span> protected boolean startTransition(final MasterProcedureEnv env, final RegionStateNode regionNode)<a name="line.153"></a>
-<span class="sourceLineNo">154</span> throws IOException {<a name="line.154"></a>
-<span class="sourceLineNo">155</span> // If the region is already open we can't do much...<a name="line.155"></a>
-<span class="sourceLineNo">156</span> if (regionNode.isInState(State.OPEN) && isServerOnline(env, regionNode)) {<a name="line.156"></a>
-<span class="sourceLineNo">157</span> LOG.info("Assigned, not reassigning; " + this + "; " + regionNode.toShortString());<a name="line.157"></a>
-<span class="sourceLineNo">158</span> return false;<a name="line.158"></a>
-<span class="sourceLineNo">159</span> }<a name="line.159"></a>
-<span class="sourceLineNo">160</span> // Don't assign if table is in disabling or disabled state.<a name="line.160"></a>
-<span class="sourceLineNo">161</span> TableStateManager tsm = env.getMasterServices().getTableStateManager();<a name="line.161"></a>
-<span class="sourceLineNo">162</span> TableName tn = regionNode.getRegionInfo().getTable();<a name="line.162"></a>
-<span class="sourceLineNo">163</span> if (tsm.getTableState(tn).isDisabledOrDisabling()) {<a name="line.163"></a>
-<span class="sourceLineNo">164</span> LOG.info("Table " + tn + " state=" + tsm.getTableState(tn) + ", skipping " + this);<a name="line.164"></a>
-<span class="sourceLineNo">165</span> return false;<a name="line.165"></a>
-<span class="sourceLineNo">166</span> }<a name="line.166"></a>
-<span class="sourceLineNo">167</span> // If the region is SPLIT, we can't assign it. But state might be CLOSED, rather than<a name="line.167"></a>
-<span class="sourceLineNo">168</span> // SPLIT which is what a region gets set to when unassigned as part of SPLIT. FIX.<a name="line.168"></a>
-<span class="sourceLineNo">169</span> if (regionNode.isInState(State.SPLIT) ||<a name="line.169"></a>
-<span class="sourceLineNo">170</span> (regionNode.getRegionInfo().isOffline() && regionNode.getRegionInfo().isSplit())) {<a name="line.170"></a>
-<span class="sourceLineNo">171</span> LOG.info("SPLIT, cannot be assigned; " + this + "; " + regionNode +<a name="line.171"></a>
-<span class="sourceLineNo">172</span> "; hri=" + regionNode.getRegionInfo());<a name="line.172"></a>
-<span class="sourceLineNo">173</span> return false;<a name="line.173"></a>
-<span class="sourceLineNo">174</span> }<a name="line.174"></a>
-<span class="sourceLineNo">175</span><a name="line.175"></a>
-<span class="sourceLineNo">176</span> // If we haven't started the operation yet, we can abort<a name="line.176"></a>
-<span class="sourceLineNo">177</span> if (aborted.get() && regionNode.isInState(State.CLOSED, State.OFFLINE)) {<a name="line.177"></a>
-<span class="sourceLineNo">178</span> if (incrementAndCheckMaxAttempts(env, regionNode)) {<a name="line.178"></a>
-<span class="sourceLineNo">179</span> regionNode.setState(State.FAILED_OPEN);<a name="line.179"></a>
-<span class="sourceLineNo">180</span> setFailure(getClass().getSimpleName(),<a name="line.180"></a>
-<span class="sourceLineNo">181</span> new RetriesExhaustedException("Max attempts exceeded"));<a name="line.181"></a>
-<span class="sourceLineNo">182</span> } else {<a name="line.182"></a>
-<span class="sourceLineNo">183</span> setAbortFailure(getClass().getSimpleName(), "Abort requested");<a name="line.183"></a>
-<span class="sourceLineNo">184</span> }<a name="line.184"></a>
-<span class="sourceLineNo">185</span> return false;<a name="line.185"></a>
-<span class="sourceLineNo">186</span> }<a name="line.186"></a>
-<span class="sourceLineNo">187</span><a name="line.187"></a>
-<span class="sourceLineNo">188</span> // Send assign (add into assign-pool). Region is now in OFFLINE state. Setting offline state<a name="line.188"></a>
-<span class="sourceLineNo">189</span> // scrubs what was the old region location. Setting a new regionLocation here is how we retain<a name="line.189"></a>
-<span class="sourceLineNo">190</span> // old assignment or specify target server if a move or merge. See<a name="line.190"></a>
-<span class="sourceLineNo">191</span> // AssignmentManager#processAssignQueue. Otherwise, balancer gives us location.<a name="line.191"></a>
-<span class="sourceLineNo">192</span> ServerName lastRegionLocation = regionNode.offline();<a name="line.192"></a>
-<span class="sourceLineNo">193</span> boolean retain = false;<a name="line.193"></a>
-<span class="sourceLineNo">194</span> if (!forceNewPlan) {<a name="line.194"></a>
-<span class="sourceLineNo">195</span> if (this.targetServer != null) {<a name="line.195"></a>
-<span class="sourceLineNo">196</span> retain = targetServer.equals(lastRegionLocation);<a name="line.196"></a>
-<span class="sourceLineNo">197</span> regionNode.setRegionLocation(targetServer);<a name="line.197"></a>
-<span class="sourceLineNo">198</span> } else {<a name="line.198"></a>
-<span class="sourceLineNo">199</span> if (lastRegionLocation != null) {<a name="line.199"></a>
-<span class="sourceLineNo">200</span> // Try and keep the location we had before we offlined.<a name="line.200"></a>
-<span class="sourceLineNo">201</span> retain = true;<a name="line.201"></a>
-<span class="sourceLineNo">202</span> regionNode.setRegionLocation(lastRegionLocation);<a name="line.202"></a>
-<span class="sourceLineNo">203</span> } else if (regionNode.getLastHost() != null) {<a name="line.203"></a>
-<span class="sourceLineNo">204</span> retain = true;<a name="line.204"></a>
-<span class="sourceLineNo">205</span> LOG.info("Setting lastHost as the region location " + regionNode.getLastHost());<a name="line.205"></a>
-<span class="sourceLineNo">206</span> regionNode.setRegionLocation(regionNode.getLastHost());<a name="line.206"></a>
-<span class="sourceLineNo">207</span> }<a name="line.207"></a>
-<span class="sourceLineNo">208</span> }<a name="line.208"></a>
-<span class="sourceLineNo">209</span> }<a name="line.209"></a>
-<span class="sourceLineNo">210</span> LOG.info("Starting " + this + "; " + regionNode.toShortString() +<a name="line.210"></a>
-<span class="sourceLineNo">211</span> "; forceNewPlan=" + this.forceNewPlan +<a name="line.211"></a>
-<span class="sourceLineNo">212</span> ", retain=" + retain);<a name="line.212"></a>
-<span class="sourceLineNo">213</span> env.getAssignmentManager().queueAssign(regionNode);<a name="line.213"></a>
-<span class="sourceLineNo">214</span> return true;<a name="line.214"></a>
-<span class="sourceLineNo">215</span> }<a name="line.215"></a>
-<span class="sourceLineNo">216</span><a name="line.216"></a>
-<span class="sourceLineNo">217</span> @Override<a name="line.217"></a>
-<span class="sourceLineNo">218</span> protected boolean updateTransition(final MasterProcedureEnv env, final RegionStateNode regionNode)<a name="line.218"></a>
-<span class="sourceLineNo">219</span> throws IOException, ProcedureSuspendedException {<a name="line.219"></a>
-<span class="sourceLineNo">220</span> // TODO: crash if destinationServer is specified and not online<a name="line.220"></a>
-<span class="sourceLineNo">221</span> // which is also the case when the balancer provided us with a different location.<a name="line.221"></a>
-<span class="sourceLineNo">222</span> if (LOG.isTraceEnabled()) {<a name="line.222"></a>
-<span class="sourceLineNo">223</span> LOG.trace("Update " + this + "; " + regionNode.toShortString());<a name="line.223"></a>
-<span class="sourceLineNo">224</span> }<a name="line.224"></a>
-<span class="sourceLineNo">225</span> if (regionNode.getRegionLocation() == null) {<a name="line.225"></a>
-<span class="sourceLineNo">226</span> setTransitionState(RegionTransitionState.REGION_TRANSITION_QUEUE);<a name="line.226"></a>
-<span class="sourceLineNo">227</span> return true;<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> if (!isServerOnline(env, regionNode)) {<a name="line.230"></a>
-<span class="sourceLineNo">231</span> // TODO: is this correct? should we wait the chore/ssh?<a name="line.231"></a>
-<span class="sourceLineNo">232</span> LOG.info("Server not online, re-queuing " + this + "; " + regionNode.toShortString());<a name="line.232"></a>
-<span class="sourceLineNo">233</span> setTransitionState(RegionTransitionState.REGION_TRANSITION_QUEUE);<a name="line.233"></a>
-<span class="sourceLineNo">234</span> return true;<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> if (env.getAssignmentManager().waitServerReportEvent(regionNode.getRegionLocation(), this)) {<a name="line.237"></a>
-<span class="sourceLineNo">238</span> LOG.info("Early suspend! " + this + "; " + regionNode.toShortString());<a name="line.238"></a>
-<span class="sourceLineNo">239</span> throw new ProcedureSuspendedException();<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> if (regionNode.isInState(State.OPEN)) {<a name="line.242"></a>
-<span class="sourceLineNo">243</span> LOG.info("Already assigned: " + this + "; " + regionNode.toShortString());<a name="line.243"></a>
-<span class="sourceLineNo">244</span> return 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> // Transition regionNode State. Set it to OPENING. Update hbase:meta, and add<a name="line.247"></a>
-<span class="sourceLineNo">248</span> // region to list of regions on the target regionserver. Need to UNDO if failure!<a name="line.248"></a>
-<span class="sourceLineNo">249</span> env.getAssignmentManager().markRegionAsOpening(regionNode);<a name="line.249"></a>
-<span class="sourceLineNo">250</span><a name="line.250"></a>
-<span class="sourceLineNo">251</span> // TODO: Requires a migration to be open by the RS?<a name="line.251"></a>
-<span class="sourceLineNo">252</span> // regionNode.getFormatVersion()<a name="line.252"></a>
-<span class="sourceLineNo">253</span><a name="line.253"></a>
-<span class="sourceLineNo">254</span> if (!addToRemoteDispatcher(env, regionNode.getRegionLocation())) {<a name="line.254"></a>
-<span class="sourceLineNo">255</span> // Failed the dispatch BUT addToRemoteDispatcher internally does<a name="line.255"></a>
-<span class="sourceLineNo">256</span> // cleanup on failure -- even the undoing of markRegionAsOpening above --<a name="line.256"></a>
-<span class="sourceLineNo">257</span> // so nothing more to do here; in fact we need to get out of here<a name="line.257"></a>
-<span class="sourceLineNo">258</span> // fast since we've been put back on the scheduler.<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> // We always return true, even if we fail dispatch because addToRemoteDispatcher<a name="line.261"></a>
-<span class="sourceLineNo">262</span> // failure processing sets state back to REGION_TRANSITION_QUEUE so we try again;<a name="line.262"></a>
-<span class="sourceLineNo">263</span> // i.e. return true to keep the Procedure running; it has been reset to startover.<a name="line.263"></a>
-<span class="sourceLineNo">264</span> return true;<a name="line.264"></a>
-<span class="sourceLineNo">265</span> }<a name="line.265"></a>
-<span class="sourceLineNo">266</span><a name="line.266"></a>
-<span class="sourceLineNo">267</span> @Override<a name="line.267"></a>
-<span class="sourceLineNo">268</span> protected void finishTransition(final MasterProcedureEnv env, final RegionStateNode regionNode)<a name="line.268"></a>
-<span class="sourceLineNo">269</span> throws IOException {<a name="line.269"></a>
-<span class="sourceLineNo">270</span> env.getAssignmentManager().markRegionAsOpened(regionNode);<a name="line.270"></a>
-<span class="sourceLineNo">271</span> // This success may have been after we failed open a few times. Be sure to cleanup any<a name="line.271"></a>
-<span class="sourceLineNo">272</span> // failed open references. See #incrementAndCheckMaxAttempts and where it is called.<a name="line.272"></a>
-<span class="sourceLineNo">273</span> env.getAssignmentManager().getRegionStates().removeFromFailedOpen(regionNode.getRegionInfo());<a name="line.273"></a>
-<span class="sourceLineNo">274</span> }<a name="line.274"></a>
-<span class="sourceLineNo">275</span><a name="line.275"></a>
-<span class="sourceLineNo">276</span> @Override<a name="line.276"></a>
-<span class="sourceLineNo">277</span> protected void reportTransition(final MasterProcedureEnv env, final RegionStateNode regionNode,<a name="line.277"></a>
-<span class="sourceLineNo">278</span> final TransitionCode code, final long openSeqNum) throws UnexpectedStateException {<a name="line.278"></a>
-<span class="sourceLineNo">279</span> switch (code) {<a name="line.279"></a>
-<span class="sourceLineNo">280</span> case OPENED:<a name="line.280"></a>
-<span class="sourceLineNo">281</span> if (openSeqNum < 0) {<a name="line.281"></a>
-<span class="sourceLineNo">282</span> throw new UnexpectedStateException("Received report unexpected " + code +<a name="line.282"></a>
-<span class="sourceLineNo">283</span> " transition openSeqNum=" + openSeqNum + ", " + regionNode);<a name="line.283"></a>
-<span class="sourceLineNo">284</span> }<a name="line.284"></a>
-<span class="sourceLineNo">285</span> if (openSeqNum < regionNode.getOpenSeqNum()) {<a name="line.285"></a>
-<span class="sourceLineNo">286</span> LOG.warn("Skipping update of open seqnum with " + openSeqNum +<a name="line.286"></a>
-<span class="sourceLineNo">287</span> " because current seqnum=" + regionNode.getOpenSeqNum());<a name="line.287"></a>
-<span class="sourceLineNo">288</span> } else {<a name="line.288"></a>
-<span class="sourceLineNo">289</span> regionNode.setOpenSeqNum(openSeqNum);<a name="line.289"></a>
-<span class="sourceLineNo">290</span> }<a name="line.290"></a>
-<span class="sourceLineNo">291</span> // Leave the state here as OPENING for now. We set it to OPEN in<a name="line.291"></a>
-<span class="sourceLineNo">292</span> // REGION_TRANSITION_FINISH section where we do a bunch of checks.<a name="line.292"></a>
-<span class="sourceLineNo">293</span> // regionNode.setState(RegionState.State.OPEN, RegionState.State.OPENING);<a name="line.293"></a>
-<span class="sourceLineNo">294</span> setTransitionState(RegionTransitionState.REGION_TRANSITION_FINISH);<a name="line.294"></a>
-<span class="sourceLineNo">295</span> break;<a name="line.295"></a>
-<span class="sourceLineNo">296</span> case FAILED_OPEN:<a name="line.296"></a>
-<span class="sourceLineNo">297</span> handleFailure(env, regionNode);<a name="line.297"></a>
-<span class="sourceLineNo">298</span> break;<a name="line.298"></a>
-<span class="sourceLineNo">299</span> default:<a name="line.299"></a>
-<span class="sourceLineNo">300</span> throw new UnexpectedStateException("Received report unexpected " + code +<a name="line.300"></a>
-<span class="sourceLineNo">301</span> " transition openSeqNum=" + openSeqNum + ", " + regionNode.toShortString() +<a name="line.301"></a>
-<span class="sourceLineNo">302</span> ", " + this + ", expected OPENED or FAILED_OPEN.");<a name="line.302"></a>
-<span class="sourceLineNo">303</span> }<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> * Called when dispatch or subsequent OPEN request fail. Can be run by the<a name="line.307"></a>
-<span class="sourceLineNo">308</span> * inline dispatch call or later by the ServerCrashProcedure. Our state is<a name="line.308"></a>
-<span class="sourceLineNo">309</span> * generally OPENING. Cleanup and reset to OFFLINE and put our Procedure<a name="line.309"></a>
-<span class="sourceLineNo">310</span> * State back to REGION_TRANSITION_QUEUE so the Assign starts over.<a name="line.310"></a>
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-<span class="sourceLineNo">313</span> if (incrementAndCheckMaxAttempts(env, regionNode)) {<a name="line.313"></a>
-<span class="sourceLineNo">314</span> aborted.set(true);<a name="line.314"></a>
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-<span class="sourceLineNo">317</span> this.targetServer = null;<a name="line.317"></a>
-<span class="sourceLineNo">318</span> regionNode.offline();<a name="line.318"></a>
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-<span class="sourceLineNo">320</span> // this method because it checks for OPENING first.<a name="line.320"></a>
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-<span class="sourceLineNo">329</span> int max = env.getAssignmentManager().getAssignMaxAttempts();<a name="line.329"></a>
-<span class="sourceLineNo">330</span> LOG.info("Retry=" + retries + " of max=" + max + "; " +<a name="line.330"></a>
-<span class="sourceLineNo">331</span> this + "; " + regionNode.toShortString());<a name="line.331"></a>
-<span class="sourceLineNo">332</span> return retries >= max;<a name="line.332"></a>
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-<span class="sourceLineNo">338</span> return new RegionOpenOperation(this, getRegionInfo(),<a name="line.338"></a>
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-<span class="sourceLineNo">342</span> @Override<a name="line.342"></a>
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-<span class="sourceLineNo">346</span> return true;<a name="line.346"></a>
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-<span class="sourceLineNo">351</span> super.toStringClassDetails(sb);<a name="line.351"></a>
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-<span class="sourceLineNo">357</span> RegionStateNode node =<a name="line.357"></a>
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+<span class="sourceLineNo">219</span> "; forceNewPlan=" + this.forceNewPlan +<a name="line.219"></a>
+<span class="sourceLineNo">220</span> ", retain=" + retain);<a name="line.220"></a>
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+<span class="sourceLineNo">252</span> return false;<a name="line.252"></a>
+<span class="sourceLineNo">253</span> }<a name="line.253"></a>
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+<span class="sourceLineNo">265</span> // so nothing more to do here; in fact we need to get out of here<a name="line.265"></a>
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