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 2018/12/07 14:53:02 UTC
[15/28] hbase-site git commit: Published site at
8d7061a487357344f10ee260979cc2c47cd833dd.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/2e694a8e/devapidocs/src-html/org/apache/hadoop/hbase/master/procedure/ServerCrashProcedure.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/procedure/ServerCrashProcedure.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/procedure/ServerCrashProcedure.html
index 5f84a29..9b7838d 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/master/procedure/ServerCrashProcedure.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/procedure/ServerCrashProcedure.html
@@ -229,173 +229,176 @@
<span class="sourceLineNo">221</span> // PROBLEM!!! WE BLOCK HERE.<a name="line.221"></a>
<span class="sourceLineNo">222</span> am.getRegionStates().logSplitting(this.serverName);<a name="line.222"></a>
<span class="sourceLineNo">223</span> mwm.splitLog(this.serverName);<a name="line.223"></a>
-<span class="sourceLineNo">224</span> am.getRegionStates().logSplit(this.serverName);<a name="line.224"></a>
-<span class="sourceLineNo">225</span> LOG.debug("Done splitting WALs {}", this);<a name="line.225"></a>
-<span class="sourceLineNo">226</span> }<a name="line.226"></a>
-<span class="sourceLineNo">227</span><a name="line.227"></a>
-<span class="sourceLineNo">228</span> @Override<a name="line.228"></a>
-<span class="sourceLineNo">229</span> protected void rollbackState(MasterProcedureEnv env, ServerCrashState state)<a name="line.229"></a>
-<span class="sourceLineNo">230</span> throws IOException {<a name="line.230"></a>
-<span class="sourceLineNo">231</span> // Can't rollback.<a name="line.231"></a>
-<span class="sourceLineNo">232</span> throw new UnsupportedOperationException("unhandled state=" + state);<a 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> protected ServerCrashState getState(int stateId) {<a name="line.236"></a>
-<span class="sourceLineNo">237</span> return ServerCrashState.forNumber(stateId);<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> @Override<a name="line.240"></a>
-<span class="sourceLineNo">241</span> protected int getStateId(ServerCrashState state) {<a name="line.241"></a>
-<span class="sourceLineNo">242</span> return state.getNumber();<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> @Override<a name="line.245"></a>
-<span class="sourceLineNo">246</span> protected ServerCrashState getInitialState() {<a name="line.246"></a>
-<span class="sourceLineNo">247</span> return ServerCrashState.SERVER_CRASH_START;<a name="line.247"></a>
-<span class="sourceLineNo">248</span> }<a name="line.248"></a>
-<span class="sourceLineNo">249</span><a name="line.249"></a>
-<span class="sourceLineNo">250</span> @Override<a name="line.250"></a>
-<span class="sourceLineNo">251</span> protected boolean abort(MasterProcedureEnv env) {<a name="line.251"></a>
-<span class="sourceLineNo">252</span> // TODO<a name="line.252"></a>
-<span class="sourceLineNo">253</span> return false;<a name="line.253"></a>
-<span class="sourceLineNo">254</span> }<a name="line.254"></a>
-<span class="sourceLineNo">255</span><a name="line.255"></a>
-<span class="sourceLineNo">256</span> @Override<a name="line.256"></a>
-<span class="sourceLineNo">257</span> protected LockState acquireLock(final MasterProcedureEnv env) {<a name="line.257"></a>
-<span class="sourceLineNo">258</span> if (env.getProcedureScheduler().waitServerExclusiveLock(this, getServerName())) {<a name="line.258"></a>
-<span class="sourceLineNo">259</span> return LockState.LOCK_EVENT_WAIT;<a name="line.259"></a>
-<span class="sourceLineNo">260</span> }<a name="line.260"></a>
-<span class="sourceLineNo">261</span> return LockState.LOCK_ACQUIRED;<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> @Override<a name="line.264"></a>
-<span class="sourceLineNo">265</span> protected void releaseLock(final MasterProcedureEnv env) {<a name="line.265"></a>
-<span class="sourceLineNo">266</span> env.getProcedureScheduler().wakeServerExclusiveLock(this, getServerName());<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> @Override<a name="line.269"></a>
-<span class="sourceLineNo">270</span> public void toStringClassDetails(StringBuilder sb) {<a name="line.270"></a>
-<span class="sourceLineNo">271</span> sb.append(getClass().getSimpleName());<a name="line.271"></a>
-<span class="sourceLineNo">272</span> sb.append(" server=");<a name="line.272"></a>
-<span class="sourceLineNo">273</span> sb.append(serverName);<a name="line.273"></a>
-<span class="sourceLineNo">274</span> sb.append(", splitWal=");<a name="line.274"></a>
-<span class="sourceLineNo">275</span> sb.append(shouldSplitWal);<a name="line.275"></a>
-<span class="sourceLineNo">276</span> sb.append(", meta=");<a name="line.276"></a>
-<span class="sourceLineNo">277</span> sb.append(carryingMeta);<a name="line.277"></a>
-<span class="sourceLineNo">278</span> }<a name="line.278"></a>
-<span class="sourceLineNo">279</span><a name="line.279"></a>
-<span class="sourceLineNo">280</span> @Override<a name="line.280"></a>
-<span class="sourceLineNo">281</span> protected void serializeStateData(ProcedureStateSerializer serializer)<a name="line.281"></a>
-<span class="sourceLineNo">282</span> throws IOException {<a name="line.282"></a>
-<span class="sourceLineNo">283</span> super.serializeStateData(serializer);<a name="line.283"></a>
-<span class="sourceLineNo">284</span><a name="line.284"></a>
-<span class="sourceLineNo">285</span> MasterProcedureProtos.ServerCrashStateData.Builder state =<a name="line.285"></a>
-<span class="sourceLineNo">286</span> MasterProcedureProtos.ServerCrashStateData.newBuilder().<a name="line.286"></a>
-<span class="sourceLineNo">287</span> setServerName(ProtobufUtil.toServerName(this.serverName)).<a name="line.287"></a>
-<span class="sourceLineNo">288</span> setCarryingMeta(this.carryingMeta).<a name="line.288"></a>
-<span class="sourceLineNo">289</span> setShouldSplitWal(this.shouldSplitWal);<a name="line.289"></a>
-<span class="sourceLineNo">290</span> if (this.regionsOnCrashedServer != null && !this.regionsOnCrashedServer.isEmpty()) {<a name="line.290"></a>
-<span class="sourceLineNo">291</span> for (RegionInfo hri: this.regionsOnCrashedServer) {<a name="line.291"></a>
-<span class="sourceLineNo">292</span> state.addRegionsOnCrashedServer(ProtobufUtil.toRegionInfo(hri));<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> serializer.serialize(state.build());<a name="line.295"></a>
-<span class="sourceLineNo">296</span> }<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> protected void deserializeStateData(ProcedureStateSerializer serializer)<a name="line.299"></a>
-<span class="sourceLineNo">300</span> throws IOException {<a name="line.300"></a>
-<span class="sourceLineNo">301</span> super.deserializeStateData(serializer);<a name="line.301"></a>
-<span class="sourceLineNo">302</span><a name="line.302"></a>
-<span class="sourceLineNo">303</span> MasterProcedureProtos.ServerCrashStateData state =<a name="line.303"></a>
-<span class="sourceLineNo">304</span> serializer.deserialize(MasterProcedureProtos.ServerCrashStateData.class);<a name="line.304"></a>
-<span class="sourceLineNo">305</span> this.serverName = ProtobufUtil.toServerName(state.getServerName());<a name="line.305"></a>
-<span class="sourceLineNo">306</span> this.carryingMeta = state.hasCarryingMeta()? state.getCarryingMeta(): false;<a name="line.306"></a>
-<span class="sourceLineNo">307</span> // shouldSplitWAL has a default over in pb so this invocation will always work.<a name="line.307"></a>
-<span class="sourceLineNo">308</span> this.shouldSplitWal = state.getShouldSplitWal();<a name="line.308"></a>
-<span class="sourceLineNo">309</span> int size = state.getRegionsOnCrashedServerCount();<a name="line.309"></a>
-<span class="sourceLineNo">310</span> if (size > 0) {<a name="line.310"></a>
-<span class="sourceLineNo">311</span> this.regionsOnCrashedServer = new ArrayList<>(size);<a name="line.311"></a>
-<span class="sourceLineNo">312</span> for (org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo ri: state.getRegionsOnCrashedServerList()) {<a name="line.312"></a>
-<span class="sourceLineNo">313</span> this.regionsOnCrashedServer.add(ProtobufUtil.toRegionInfo(ri));<a name="line.313"></a>
-<span class="sourceLineNo">314</span> }<a name="line.314"></a>
-<span class="sourceLineNo">315</span> }<a name="line.315"></a>
-<span class="sourceLineNo">316</span> }<a name="line.316"></a>
-<span class="sourceLineNo">317</span><a name="line.317"></a>
-<span class="sourceLineNo">318</span> @Override<a name="line.318"></a>
-<span class="sourceLineNo">319</span> public ServerName getServerName() {<a name="line.319"></a>
-<span class="sourceLineNo">320</span> return this.serverName;<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<a name="line.323"></a>
-<span class="sourceLineNo">324</span> public boolean hasMetaTableRegion() {<a name="line.324"></a>
-<span class="sourceLineNo">325</span> return this.carryingMeta;<a name="line.325"></a>
-<span class="sourceLineNo">326</span> }<a name="line.326"></a>
-<span class="sourceLineNo">327</span><a name="line.327"></a>
-<span class="sourceLineNo">328</span> @Override<a name="line.328"></a>
-<span class="sourceLineNo">329</span> public ServerOperationType getServerOperationType() {<a name="line.329"></a>
-<span class="sourceLineNo">330</span> return ServerOperationType.CRASH_HANDLER;<a name="line.330"></a>
-<span class="sourceLineNo">331</span> }<a name="line.331"></a>
-<span class="sourceLineNo">332</span><a name="line.332"></a>
-<span class="sourceLineNo">333</span> /**<a name="line.333"></a>
-<span class="sourceLineNo">334</span> * For this procedure, yield at end of each successful flow step so that all crashed servers<a name="line.334"></a>
-<span class="sourceLineNo">335</span> * can make progress rather than do the default which has each procedure running to completion<a name="line.335"></a>
-<span class="sourceLineNo">336</span> * before we move to the next. For crashed servers, especially if running with distributed log<a name="line.336"></a>
-<span class="sourceLineNo">337</span> * replay, we will want all servers to come along; we do not want the scenario where a server is<a name="line.337"></a>
-<span class="sourceLineNo">338</span> * stuck waiting for regions to online so it can replay edits.<a name="line.338"></a>
-<span class="sourceLineNo">339</span> */<a name="line.339"></a>
-<span class="sourceLineNo">340</span> @Override<a name="line.340"></a>
-<span class="sourceLineNo">341</span> protected boolean isYieldBeforeExecuteFromState(MasterProcedureEnv env, ServerCrashState state) {<a name="line.341"></a>
-<span class="sourceLineNo">342</span> return true;<a name="line.342"></a>
-<span class="sourceLineNo">343</span> }<a name="line.343"></a>
-<span class="sourceLineNo">344</span><a name="line.344"></a>
-<span class="sourceLineNo">345</span> @Override<a name="line.345"></a>
-<span class="sourceLineNo">346</span> protected boolean shouldWaitClientAck(MasterProcedureEnv env) {<a name="line.346"></a>
-<span class="sourceLineNo">347</span> // The operation is triggered internally on the server<a name="line.347"></a>
-<span class="sourceLineNo">348</span> // the client does not know about this procedure.<a name="line.348"></a>
-<span class="sourceLineNo">349</span> return false;<a name="line.349"></a>
-<span class="sourceLineNo">350</span> }<a name="line.350"></a>
-<span class="sourceLineNo">351</span><a name="line.351"></a>
-<span class="sourceLineNo">352</span> /**<a name="line.352"></a>
-<span class="sourceLineNo">353</span> * Assign the regions on the crashed RS to other Rses.<a name="line.353"></a>
-<span class="sourceLineNo">354</span> * <p/><a name="line.354"></a>
-<span class="sourceLineNo">355</span> * In this method we will go through all the RegionStateNodes of the give regions to find out<a name="line.355"></a>
-<span class="sourceLineNo">356</span> * whether there is already an TRSP for the region, if so we interrupt it and let it retry on<a name="line.356"></a>
-<span class="sourceLineNo">357</span> * other server, otherwise we will schedule a TRSP to bring the region online.<a name="line.357"></a>
-<span class="sourceLineNo">358</span> * <p/><a name="line.358"></a>
-<span class="sourceLineNo">359</span> * We will also check whether the table for a region is enabled, if not, we will skip assigning<a name="line.359"></a>
-<span class="sourceLineNo">360</span> * it.<a name="line.360"></a>
-<span class="sourceLineNo">361</span> */<a name="line.361"></a>
-<span class="sourceLineNo">362</span> private void assignRegions(MasterProcedureEnv env, List<RegionInfo> regions) throws IOException {<a name="line.362"></a>
-<span class="sourceLineNo">363</span> AssignmentManager am = env.getMasterServices().getAssignmentManager();<a name="line.363"></a>
-<span class="sourceLineNo">364</span> for (RegionInfo region : regions) {<a name="line.364"></a>
-<span class="sourceLineNo">365</span> RegionStateNode regionNode = am.getRegionStates().getOrCreateRegionStateNode(region);<a name="line.365"></a>
-<span class="sourceLineNo">366</span> regionNode.lock();<a name="line.366"></a>
-<span class="sourceLineNo">367</span> try {<a name="line.367"></a>
-<span class="sourceLineNo">368</span> if (regionNode.getProcedure() != null) {<a name="line.368"></a>
-<span class="sourceLineNo">369</span> LOG.info("{} found RIT {}; {}", this, regionNode.getProcedure(), regionNode);<a name="line.369"></a>
-<span class="sourceLineNo">370</span> regionNode.getProcedure().serverCrashed(env, regionNode, getServerName());<a name="line.370"></a>
-<span class="sourceLineNo">371</span> } else {<a name="line.371"></a>
-<span class="sourceLineNo">372</span> if (env.getMasterServices().getTableStateManager().isTableState(regionNode.getTable(),<a name="line.372"></a>
-<span class="sourceLineNo">373</span> TableState.State.DISABLING, TableState.State.DISABLED)) {<a name="line.373"></a>
-<span class="sourceLineNo">374</span> continue;<a name="line.374"></a>
-<span class="sourceLineNo">375</span> }<a name="line.375"></a>
-<span class="sourceLineNo">376</span> TransitRegionStateProcedure proc = TransitRegionStateProcedure.assign(env, region, null);<a name="line.376"></a>
-<span class="sourceLineNo">377</span> regionNode.setProcedure(proc);<a name="line.377"></a>
-<span class="sourceLineNo">378</span> addChildProcedure(proc);<a name="line.378"></a>
-<span class="sourceLineNo">379</span> }<a name="line.379"></a>
-<span class="sourceLineNo">380</span> } finally {<a name="line.380"></a>
-<span class="sourceLineNo">381</span> regionNode.unlock();<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> }<a name="line.384"></a>
-<span class="sourceLineNo">385</span><a name="line.385"></a>
-<span class="sourceLineNo">386</span> @Override<a name="line.386"></a>
-<span class="sourceLineNo">387</span> protected ProcedureMetrics getProcedureMetrics(MasterProcedureEnv env) {<a name="line.387"></a>
-<span class="sourceLineNo">388</span> return env.getMasterServices().getMasterMetrics().getServerCrashProcMetrics();<a name="line.388"></a>
-<span class="sourceLineNo">389</span> }<a name="line.389"></a>
-<span class="sourceLineNo">390</span>}<a name="line.390"></a>
+<span class="sourceLineNo">224</span> if (!carryingMeta) {<a name="line.224"></a>
+<span class="sourceLineNo">225</span> mwm.archiveMetaLog(this.serverName);<a name="line.225"></a>
+<span class="sourceLineNo">226</span> }<a name="line.226"></a>
+<span class="sourceLineNo">227</span> am.getRegionStates().logSplit(this.serverName);<a name="line.227"></a>
+<span class="sourceLineNo">228</span> LOG.debug("Done splitting WALs {}", this);<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> @Override<a name="line.231"></a>
+<span class="sourceLineNo">232</span> protected void rollbackState(MasterProcedureEnv env, ServerCrashState state)<a name="line.232"></a>
+<span class="sourceLineNo">233</span> throws IOException {<a name="line.233"></a>
+<span class="sourceLineNo">234</span> // Can't rollback.<a name="line.234"></a>
+<span class="sourceLineNo">235</span> throw new UnsupportedOperationException("unhandled state=" + state);<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> @Override<a name="line.238"></a>
+<span class="sourceLineNo">239</span> protected ServerCrashState getState(int stateId) {<a name="line.239"></a>
+<span class="sourceLineNo">240</span> return ServerCrashState.forNumber(stateId);<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> @Override<a name="line.243"></a>
+<span class="sourceLineNo">244</span> protected int getStateId(ServerCrashState state) {<a name="line.244"></a>
+<span class="sourceLineNo">245</span> return state.getNumber();<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> @Override<a name="line.248"></a>
+<span class="sourceLineNo">249</span> protected ServerCrashState getInitialState() {<a name="line.249"></a>
+<span class="sourceLineNo">250</span> return ServerCrashState.SERVER_CRASH_START;<a name="line.250"></a>
+<span class="sourceLineNo">251</span> }<a name="line.251"></a>
+<span class="sourceLineNo">252</span><a name="line.252"></a>
+<span class="sourceLineNo">253</span> @Override<a name="line.253"></a>
+<span class="sourceLineNo">254</span> protected boolean abort(MasterProcedureEnv env) {<a name="line.254"></a>
+<span class="sourceLineNo">255</span> // TODO<a name="line.255"></a>
+<span class="sourceLineNo">256</span> return false;<a name="line.256"></a>
+<span class="sourceLineNo">257</span> }<a name="line.257"></a>
+<span class="sourceLineNo">258</span><a name="line.258"></a>
+<span class="sourceLineNo">259</span> @Override<a name="line.259"></a>
+<span class="sourceLineNo">260</span> protected LockState acquireLock(final MasterProcedureEnv env) {<a name="line.260"></a>
+<span class="sourceLineNo">261</span> if (env.getProcedureScheduler().waitServerExclusiveLock(this, getServerName())) {<a name="line.261"></a>
+<span class="sourceLineNo">262</span> return LockState.LOCK_EVENT_WAIT;<a name="line.262"></a>
+<span class="sourceLineNo">263</span> }<a name="line.263"></a>
+<span class="sourceLineNo">264</span> return LockState.LOCK_ACQUIRED;<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 releaseLock(final MasterProcedureEnv env) {<a name="line.268"></a>
+<span class="sourceLineNo">269</span> env.getProcedureScheduler().wakeServerExclusiveLock(this, getServerName());<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 toStringClassDetails(StringBuilder sb) {<a name="line.273"></a>
+<span class="sourceLineNo">274</span> sb.append(getClass().getSimpleName());<a name="line.274"></a>
+<span class="sourceLineNo">275</span> sb.append(" server=");<a name="line.275"></a>
+<span class="sourceLineNo">276</span> sb.append(serverName);<a name="line.276"></a>
+<span class="sourceLineNo">277</span> sb.append(", splitWal=");<a name="line.277"></a>
+<span class="sourceLineNo">278</span> sb.append(shouldSplitWal);<a name="line.278"></a>
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+<span class="sourceLineNo">280</span> sb.append(carryingMeta);<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> @Override<a name="line.283"></a>
+<span class="sourceLineNo">284</span> protected void serializeStateData(ProcedureStateSerializer serializer)<a name="line.284"></a>
+<span class="sourceLineNo">285</span> throws IOException {<a name="line.285"></a>
+<span class="sourceLineNo">286</span> super.serializeStateData(serializer);<a name="line.286"></a>
+<span class="sourceLineNo">287</span><a name="line.287"></a>
+<span class="sourceLineNo">288</span> MasterProcedureProtos.ServerCrashStateData.Builder state =<a name="line.288"></a>
+<span class="sourceLineNo">289</span> MasterProcedureProtos.ServerCrashStateData.newBuilder().<a name="line.289"></a>
+<span class="sourceLineNo">290</span> setServerName(ProtobufUtil.toServerName(this.serverName)).<a name="line.290"></a>
+<span class="sourceLineNo">291</span> setCarryingMeta(this.carryingMeta).<a name="line.291"></a>
+<span class="sourceLineNo">292</span> setShouldSplitWal(this.shouldSplitWal);<a name="line.292"></a>
+<span class="sourceLineNo">293</span> if (this.regionsOnCrashedServer != null && !this.regionsOnCrashedServer.isEmpty()) {<a name="line.293"></a>
+<span class="sourceLineNo">294</span> for (RegionInfo hri: this.regionsOnCrashedServer) {<a name="line.294"></a>
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+<span class="sourceLineNo">303</span> throws IOException {<a name="line.303"></a>
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+<span class="sourceLineNo">305</span><a name="line.305"></a>
+<span class="sourceLineNo">306</span> MasterProcedureProtos.ServerCrashStateData state =<a name="line.306"></a>
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+<span class="sourceLineNo">308</span> this.serverName = ProtobufUtil.toServerName(state.getServerName());<a name="line.308"></a>
+<span class="sourceLineNo">309</span> this.carryingMeta = state.hasCarryingMeta()? state.getCarryingMeta(): false;<a name="line.309"></a>
+<span class="sourceLineNo">310</span> // shouldSplitWAL has a default over in pb so this invocation will always work.<a name="line.310"></a>
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+<span class="sourceLineNo">313</span> if (size > 0) {<a name="line.313"></a>
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+<span class="sourceLineNo">315</span> for (org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionInfo ri: state.getRegionsOnCrashedServerList()) {<a name="line.315"></a>
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+<span class="sourceLineNo">317</span> }<a name="line.317"></a>
+<span class="sourceLineNo">318</span> }<a name="line.318"></a>
+<span class="sourceLineNo">319</span> }<a name="line.319"></a>
+<span class="sourceLineNo">320</span><a name="line.320"></a>
+<span class="sourceLineNo">321</span> @Override<a name="line.321"></a>
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+<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<a name="line.326"></a>
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+<span class="sourceLineNo">328</span> return this.carryingMeta;<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> @Override<a name="line.331"></a>
+<span class="sourceLineNo">332</span> public ServerOperationType getServerOperationType() {<a name="line.332"></a>
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+<span class="sourceLineNo">334</span> }<a name="line.334"></a>
+<span class="sourceLineNo">335</span><a name="line.335"></a>
+<span class="sourceLineNo">336</span> /**<a name="line.336"></a>
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+<span class="sourceLineNo">338</span> * can make progress rather than do the default which has each procedure running to completion<a name="line.338"></a>
+<span class="sourceLineNo">339</span> * before we move to the next. For crashed servers, especially if running with distributed log<a name="line.339"></a>
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+<span class="sourceLineNo">341</span> * stuck waiting for regions to online so it can replay edits.<a name="line.341"></a>
+<span class="sourceLineNo">342</span> */<a name="line.342"></a>
+<span class="sourceLineNo">343</span> @Override<a name="line.343"></a>
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+<span class="sourceLineNo">345</span> return true;<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> @Override<a name="line.348"></a>
+<span class="sourceLineNo">349</span> protected boolean shouldWaitClientAck(MasterProcedureEnv env) {<a name="line.349"></a>
+<span class="sourceLineNo">350</span> // The operation is triggered internally on the server<a name="line.350"></a>
+<span class="sourceLineNo">351</span> // the client does not know about this procedure.<a name="line.351"></a>
+<span class="sourceLineNo">352</span> return false;<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> * Assign the regions on the crashed RS to other Rses.<a name="line.356"></a>
+<span class="sourceLineNo">357</span> * <p/><a name="line.357"></a>
+<span class="sourceLineNo">358</span> * In this method we will go through all the RegionStateNodes of the give regions to find out<a name="line.358"></a>
+<span class="sourceLineNo">359</span> * whether there is already an TRSP for the region, if so we interrupt it and let it retry on<a name="line.359"></a>
+<span class="sourceLineNo">360</span> * other server, otherwise we will schedule a TRSP to bring the region online.<a name="line.360"></a>
+<span class="sourceLineNo">361</span> * <p/><a name="line.361"></a>
+<span class="sourceLineNo">362</span> * We will also check whether the table for a region is enabled, if not, we will skip assigning<a name="line.362"></a>
+<span class="sourceLineNo">363</span> * it.<a name="line.363"></a>
+<span class="sourceLineNo">364</span> */<a name="line.364"></a>
+<span class="sourceLineNo">365</span> private void assignRegions(MasterProcedureEnv env, List<RegionInfo> regions) throws IOException {<a name="line.365"></a>
+<span class="sourceLineNo">366</span> AssignmentManager am = env.getMasterServices().getAssignmentManager();<a name="line.366"></a>
+<span class="sourceLineNo">367</span> for (RegionInfo region : regions) {<a name="line.367"></a>
+<span class="sourceLineNo">368</span> RegionStateNode regionNode = am.getRegionStates().getOrCreateRegionStateNode(region);<a name="line.368"></a>
+<span class="sourceLineNo">369</span> regionNode.lock();<a name="line.369"></a>
+<span class="sourceLineNo">370</span> try {<a name="line.370"></a>
+<span class="sourceLineNo">371</span> if (regionNode.getProcedure() != null) {<a name="line.371"></a>
+<span class="sourceLineNo">372</span> LOG.info("{} found RIT {}; {}", this, regionNode.getProcedure(), regionNode);<a name="line.372"></a>
+<span class="sourceLineNo">373</span> regionNode.getProcedure().serverCrashed(env, regionNode, getServerName());<a name="line.373"></a>
+<span class="sourceLineNo">374</span> } else {<a name="line.374"></a>
+<span class="sourceLineNo">375</span> if (env.getMasterServices().getTableStateManager().isTableState(regionNode.getTable(),<a name="line.375"></a>
+<span class="sourceLineNo">376</span> TableState.State.DISABLING, TableState.State.DISABLED)) {<a name="line.376"></a>
+<span class="sourceLineNo">377</span> continue;<a name="line.377"></a>
+<span class="sourceLineNo">378</span> }<a name="line.378"></a>
+<span class="sourceLineNo">379</span> TransitRegionStateProcedure proc = TransitRegionStateProcedure.assign(env, region, null);<a name="line.379"></a>
+<span class="sourceLineNo">380</span> regionNode.setProcedure(proc);<a name="line.380"></a>
+<span class="sourceLineNo">381</span> addChildProcedure(proc);<a name="line.381"></a>
+<span class="sourceLineNo">382</span> }<a name="line.382"></a>
+<span class="sourceLineNo">383</span> } finally {<a name="line.383"></a>
+<span class="sourceLineNo">384</span> regionNode.unlock();<a name="line.384"></a>
+<span class="sourceLineNo">385</span> }<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><a name="line.388"></a>
+<span class="sourceLineNo">389</span> @Override<a name="line.389"></a>
+<span class="sourceLineNo">390</span> protected ProcedureMetrics getProcedureMetrics(MasterProcedureEnv env) {<a name="line.390"></a>
+<span class="sourceLineNo">391</span> return env.getMasterServices().getMasterMetrics().getServerCrashProcMetrics();<a name="line.391"></a>
+<span class="sourceLineNo">392</span> }<a name="line.392"></a>
+<span class="sourceLineNo">393</span>}<a name="line.393"></a>