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From mi...@apache.org
Subject [36/51] [partial] hbase-site git commit: Published site at f6945c4631e7697976fd8c2272f8152905c6f875.
Date Thu, 10 Mar 2016 17:23:19 GMT
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/5eb82203/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/ProcedureExecutor.ProcedureExecutorListener.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/ProcedureExecutor.ProcedureExecutorListener.html b/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/ProcedureExecutor.ProcedureExecutorListener.html
index 10be916..701ae83 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/ProcedureExecutor.ProcedureExecutorListener.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/ProcedureExecutor.ProcedureExecutorListener.html
@@ -173,1145 +173,1147 @@
 <span class="sourceLineNo">165</span>      final long evictTtl = conf.getInt(EVICT_TTL_CONF_KEY, DEFAULT_EVICT_TTL);<a name="line.165"></a>
 <span class="sourceLineNo">166</span>      final long evictAckTtl = conf.getInt(EVICT_ACKED_TTL_CONF_KEY, DEFAULT_ACKED_EVICT_TTL);<a name="line.166"></a>
 <span class="sourceLineNo">167</span><a name="line.167"></a>
-<span class="sourceLineNo">168</span>      long now = EnvironmentEdgeManager.currentTime();<a name="line.168"></a>
-<span class="sourceLineNo">169</span>      Iterator&lt;Map.Entry&lt;Long, ProcedureInfo&gt;&gt; it = completed.entrySet().iterator();<a name="line.169"></a>
-<span class="sourceLineNo">170</span>      while (it.hasNext() &amp;&amp; store.isRunning()) {<a name="line.170"></a>
-<span class="sourceLineNo">171</span>        Map.Entry&lt;Long, ProcedureInfo&gt; entry = it.next();<a name="line.171"></a>
-<span class="sourceLineNo">172</span>        ProcedureInfo result = entry.getValue();<a name="line.172"></a>
-<span class="sourceLineNo">173</span><a name="line.173"></a>
-<span class="sourceLineNo">174</span>        // TODO: Select TTL based on Procedure type<a name="line.174"></a>
-<span class="sourceLineNo">175</span>        if ((result.hasClientAckTime() &amp;&amp; (now - result.getClientAckTime()) &gt;= evictAckTtl) ||<a name="line.175"></a>
-<span class="sourceLineNo">176</span>            (now - result.getLastUpdate()) &gt;= evictTtl) {<a name="line.176"></a>
-<span class="sourceLineNo">177</span>          if (LOG.isDebugEnabled()) {<a name="line.177"></a>
-<span class="sourceLineNo">178</span>            LOG.debug("Evict completed procedure " + entry.getKey());<a name="line.178"></a>
-<span class="sourceLineNo">179</span>          }<a name="line.179"></a>
-<span class="sourceLineNo">180</span>          store.delete(entry.getKey());<a name="line.180"></a>
-<span class="sourceLineNo">181</span>          it.remove();<a name="line.181"></a>
-<span class="sourceLineNo">182</span><a name="line.182"></a>
-<span class="sourceLineNo">183</span>          NonceKey nonceKey = result.getNonceKey();<a name="line.183"></a>
-<span class="sourceLineNo">184</span>          if (nonceKey != null) {<a name="line.184"></a>
-<span class="sourceLineNo">185</span>            nonceKeysToProcIdsMap.remove(nonceKey);<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>      }<a name="line.188"></a>
-<span class="sourceLineNo">189</span>    }<a name="line.189"></a>
-<span class="sourceLineNo">190</span><a name="line.190"></a>
-<span class="sourceLineNo">191</span>    @Override<a name="line.191"></a>
-<span class="sourceLineNo">192</span>    protected Procedure[] execute(final TEnvironment env) {<a name="line.192"></a>
-<span class="sourceLineNo">193</span>      throw new UnsupportedOperationException();<a name="line.193"></a>
-<span class="sourceLineNo">194</span>    }<a name="line.194"></a>
-<span class="sourceLineNo">195</span><a name="line.195"></a>
-<span class="sourceLineNo">196</span>    @Override<a name="line.196"></a>
-<span class="sourceLineNo">197</span>    protected void rollback(final TEnvironment env) {<a name="line.197"></a>
-<span class="sourceLineNo">198</span>      throw new UnsupportedOperationException();<a name="line.198"></a>
-<span class="sourceLineNo">199</span>    }<a name="line.199"></a>
-<span class="sourceLineNo">200</span><a name="line.200"></a>
-<span class="sourceLineNo">201</span>    @Override<a name="line.201"></a>
-<span class="sourceLineNo">202</span>    protected boolean abort(final TEnvironment env) {<a name="line.202"></a>
-<span class="sourceLineNo">203</span>      throw new UnsupportedOperationException();<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 void serializeStateData(final OutputStream stream) {<a name="line.207"></a>
-<span class="sourceLineNo">208</span>      throw new UnsupportedOperationException();<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 void deserializeStateData(final InputStream stream) {<a name="line.212"></a>
-<span class="sourceLineNo">213</span>      throw new UnsupportedOperationException();<a name="line.213"></a>
-<span class="sourceLineNo">214</span>    }<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>  /**<a name="line.217"></a>
-<span class="sourceLineNo">218</span>   * Map the the procId returned by submitProcedure(), the Root-ProcID, to the ProcedureInfo.<a name="line.218"></a>
-<span class="sourceLineNo">219</span>   * Once a Root-Procedure completes (success or failure), the result will be added to this map.<a name="line.219"></a>
-<span class="sourceLineNo">220</span>   * The user of ProcedureExecutor should call getResult(procId) to get the result.<a name="line.220"></a>
-<span class="sourceLineNo">221</span>   */<a name="line.221"></a>
-<span class="sourceLineNo">222</span>  private final ConcurrentHashMap&lt;Long, ProcedureInfo&gt; completed =<a name="line.222"></a>
-<span class="sourceLineNo">223</span>    new ConcurrentHashMap&lt;Long, ProcedureInfo&gt;();<a name="line.223"></a>
-<span class="sourceLineNo">224</span><a name="line.224"></a>
-<span class="sourceLineNo">225</span>  /**<a name="line.225"></a>
-<span class="sourceLineNo">226</span>   * Map the the procId returned by submitProcedure(), the Root-ProcID, to the RootProcedureState.<a name="line.226"></a>
-<span class="sourceLineNo">227</span>   * The RootProcedureState contains the execution stack of the Root-Procedure,<a name="line.227"></a>
-<span class="sourceLineNo">228</span>   * It is added to the map by submitProcedure() and removed on procedure completion.<a name="line.228"></a>
-<span class="sourceLineNo">229</span>   */<a name="line.229"></a>
-<span class="sourceLineNo">230</span>  private final ConcurrentHashMap&lt;Long, RootProcedureState&gt; rollbackStack =<a name="line.230"></a>
-<span class="sourceLineNo">231</span>    new ConcurrentHashMap&lt;Long, RootProcedureState&gt;();<a name="line.231"></a>
-<span class="sourceLineNo">232</span><a name="line.232"></a>
-<span class="sourceLineNo">233</span>  /**<a name="line.233"></a>
-<span class="sourceLineNo">234</span>   * Helper map to lookup the live procedures by ID.<a name="line.234"></a>
-<span class="sourceLineNo">235</span>   * This map contains every procedure. root-procedures and subprocedures.<a name="line.235"></a>
-<span class="sourceLineNo">236</span>   */<a name="line.236"></a>
-<span class="sourceLineNo">237</span>  private final ConcurrentHashMap&lt;Long, Procedure&gt; procedures =<a name="line.237"></a>
-<span class="sourceLineNo">238</span>    new ConcurrentHashMap&lt;Long, Procedure&gt;();<a name="line.238"></a>
-<span class="sourceLineNo">239</span><a name="line.239"></a>
-<span class="sourceLineNo">240</span>  /**<a name="line.240"></a>
-<span class="sourceLineNo">241</span>   * Helper map to lookup whether the procedure already issued from the same client.<a name="line.241"></a>
-<span class="sourceLineNo">242</span>   * This map contains every root procedure.<a name="line.242"></a>
-<span class="sourceLineNo">243</span>   */<a name="line.243"></a>
-<span class="sourceLineNo">244</span>  private ConcurrentHashMap&lt;NonceKey, Long&gt; nonceKeysToProcIdsMap =<a name="line.244"></a>
-<span class="sourceLineNo">245</span>      new ConcurrentHashMap&lt;NonceKey, Long&gt;();<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>   * Timeout Queue that contains Procedures in a WAITING_TIMEOUT state<a name="line.248"></a>
-<span class="sourceLineNo">249</span>   * or periodic procedures.<a name="line.249"></a>
-<span class="sourceLineNo">250</span>   */<a name="line.250"></a>
-<span class="sourceLineNo">251</span>  private final TimeoutBlockingQueue&lt;Procedure&gt; waitingTimeout =<a name="line.251"></a>
-<span class="sourceLineNo">252</span>    new TimeoutBlockingQueue&lt;Procedure&gt;(new ProcedureTimeoutRetriever());<a name="line.252"></a>
-<span class="sourceLineNo">253</span><a name="line.253"></a>
-<span class="sourceLineNo">254</span>  /**<a name="line.254"></a>
-<span class="sourceLineNo">255</span>   * Queue that contains runnable procedures.<a name="line.255"></a>
-<span class="sourceLineNo">256</span>   */<a name="line.256"></a>
-<span class="sourceLineNo">257</span>  private final ProcedureRunnableSet runnables;<a name="line.257"></a>
-<span class="sourceLineNo">258</span><a name="line.258"></a>
-<span class="sourceLineNo">259</span>  // TODO<a name="line.259"></a>
-<span class="sourceLineNo">260</span>  private final ReentrantLock submitLock = new ReentrantLock();<a name="line.260"></a>
-<span class="sourceLineNo">261</span>  private final AtomicLong lastProcId = new AtomicLong(-1);<a name="line.261"></a>
-<span class="sourceLineNo">262</span><a name="line.262"></a>
-<span class="sourceLineNo">263</span>  private final CopyOnWriteArrayList&lt;ProcedureExecutorListener&gt; listeners =<a name="line.263"></a>
-<span class="sourceLineNo">264</span>    new CopyOnWriteArrayList&lt;ProcedureExecutorListener&gt;();<a name="line.264"></a>
-<span class="sourceLineNo">265</span><a name="line.265"></a>
-<span class="sourceLineNo">266</span>  private final AtomicInteger activeExecutorCount = new AtomicInteger(0);<a name="line.266"></a>
-<span class="sourceLineNo">267</span>  private final AtomicBoolean running = new AtomicBoolean(false);<a name="line.267"></a>
-<span class="sourceLineNo">268</span>  private final TEnvironment environment;<a name="line.268"></a>
-<span class="sourceLineNo">269</span>  private final ProcedureStore store;<a name="line.269"></a>
-<span class="sourceLineNo">270</span>  private final Configuration conf;<a name="line.270"></a>
-<span class="sourceLineNo">271</span><a name="line.271"></a>
-<span class="sourceLineNo">272</span>  private Thread[] threads;<a name="line.272"></a>
-<span class="sourceLineNo">273</span><a name="line.273"></a>
-<span class="sourceLineNo">274</span>  public ProcedureExecutor(final Configuration conf, final TEnvironment environment,<a name="line.274"></a>
-<span class="sourceLineNo">275</span>      final ProcedureStore store) {<a name="line.275"></a>
-<span class="sourceLineNo">276</span>    this(conf, environment, store, new ProcedureSimpleRunQueue());<a name="line.276"></a>
-<span class="sourceLineNo">277</span>  }<a name="line.277"></a>
-<span class="sourceLineNo">278</span><a name="line.278"></a>
-<span class="sourceLineNo">279</span>  public ProcedureExecutor(final Configuration conf, final TEnvironment environment,<a name="line.279"></a>
-<span class="sourceLineNo">280</span>      final ProcedureStore store, final ProcedureRunnableSet runqueue) {<a name="line.280"></a>
-<span class="sourceLineNo">281</span>    this.environment = environment;<a name="line.281"></a>
-<span class="sourceLineNo">282</span>    this.runnables = runqueue;<a name="line.282"></a>
-<span class="sourceLineNo">283</span>    this.store = store;<a name="line.283"></a>
-<span class="sourceLineNo">284</span>    this.conf = conf;<a name="line.284"></a>
-<span class="sourceLineNo">285</span>  }<a name="line.285"></a>
-<span class="sourceLineNo">286</span><a name="line.286"></a>
-<span class="sourceLineNo">287</span>  private void load(final boolean abortOnCorruption) throws IOException {<a name="line.287"></a>
-<span class="sourceLineNo">288</span>    Preconditions.checkArgument(completed.isEmpty());<a name="line.288"></a>
-<span class="sourceLineNo">289</span>    Preconditions.checkArgument(rollbackStack.isEmpty());<a name="line.289"></a>
-<span class="sourceLineNo">290</span>    Preconditions.checkArgument(procedures.isEmpty());<a name="line.290"></a>
-<span class="sourceLineNo">291</span>    Preconditions.checkArgument(waitingTimeout.isEmpty());<a name="line.291"></a>
-<span class="sourceLineNo">292</span>    Preconditions.checkArgument(runnables.size() == 0);<a name="line.292"></a>
-<span class="sourceLineNo">293</span><a name="line.293"></a>
-<span class="sourceLineNo">294</span>    store.load(new ProcedureStore.ProcedureLoader() {<a name="line.294"></a>
-<span class="sourceLineNo">295</span>      @Override<a name="line.295"></a>
-<span class="sourceLineNo">296</span>      public void setMaxProcId(long maxProcId) {<a name="line.296"></a>
-<span class="sourceLineNo">297</span>        assert lastProcId.get() &lt; 0 : "expected only one call to setMaxProcId()";<a name="line.297"></a>
-<span class="sourceLineNo">298</span>        LOG.debug("load procedures maxProcId=" + maxProcId);<a name="line.298"></a>
-<span class="sourceLineNo">299</span>        lastProcId.set(maxProcId);<a name="line.299"></a>
-<span class="sourceLineNo">300</span>      }<a name="line.300"></a>
-<span class="sourceLineNo">301</span><a name="line.301"></a>
-<span class="sourceLineNo">302</span>      @Override<a name="line.302"></a>
-<span class="sourceLineNo">303</span>      public void load(ProcedureIterator procIter) throws IOException {<a name="line.303"></a>
-<span class="sourceLineNo">304</span>        loadProcedures(procIter, abortOnCorruption);<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>      @Override<a name="line.307"></a>
-<span class="sourceLineNo">308</span>      public void handleCorrupted(ProcedureIterator procIter) throws IOException {<a name="line.308"></a>
-<span class="sourceLineNo">309</span>        int corruptedCount = 0;<a name="line.309"></a>
-<span class="sourceLineNo">310</span>        while (procIter.hasNext()) {<a name="line.310"></a>
-<span class="sourceLineNo">311</span>          ProcedureInfo proc = procIter.nextAsProcedureInfo();<a name="line.311"></a>
-<span class="sourceLineNo">312</span>          LOG.error("corrupted procedure: " + proc);<a name="line.312"></a>
-<span class="sourceLineNo">313</span>          corruptedCount++;<a name="line.313"></a>
-<span class="sourceLineNo">314</span>        }<a name="line.314"></a>
-<span class="sourceLineNo">315</span>        if (abortOnCorruption &amp;&amp; corruptedCount &gt; 0) {<a name="line.315"></a>
-<span class="sourceLineNo">316</span>          throw new IOException("found " + corruptedCount + " procedures on replay");<a name="line.316"></a>
-<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>
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-<span class="sourceLineNo">321</span><a name="line.321"></a>
-<span class="sourceLineNo">322</span>  private void loadProcedures(final ProcedureIterator procIter,<a name="line.322"></a>
-<span class="sourceLineNo">323</span>      final boolean abortOnCorruption) throws IOException {<a name="line.323"></a>
-<span class="sourceLineNo">324</span>    final boolean isDebugEnabled = LOG.isDebugEnabled();<a name="line.324"></a>
-<span class="sourceLineNo">325</span><a name="line.325"></a>
-<span class="sourceLineNo">326</span>    // 1. Build the rollback stack<a name="line.326"></a>
-<span class="sourceLineNo">327</span>    int runnablesCount = 0;<a name="line.327"></a>
-<span class="sourceLineNo">328</span>    while (procIter.hasNext()) {<a name="line.328"></a>
-<span class="sourceLineNo">329</span>      final NonceKey nonceKey;<a name="line.329"></a>
-<span class="sourceLineNo">330</span>      final long procId;<a name="line.330"></a>
-<span class="sourceLineNo">331</span><a name="line.331"></a>
-<span class="sourceLineNo">332</span>      if (procIter.isNextCompleted()) {<a name="line.332"></a>
-<span class="sourceLineNo">333</span>        ProcedureInfo proc = procIter.nextAsProcedureInfo();<a name="line.333"></a>
-<span class="sourceLineNo">334</span>        nonceKey = proc.getNonceKey();<a name="line.334"></a>
-<span class="sourceLineNo">335</span>        procId = proc.getProcId();<a name="line.335"></a>
-<span class="sourceLineNo">336</span>        completed.put(proc.getProcId(), proc);<a name="line.336"></a>
-<span class="sourceLineNo">337</span>        if (isDebugEnabled) {<a name="line.337"></a>
-<span class="sourceLineNo">338</span>          LOG.debug("The procedure is completed: " + proc);<a name="line.338"></a>
-<span class="sourceLineNo">339</span>        }<a name="line.339"></a>
-<span class="sourceLineNo">340</span>      } else {<a name="line.340"></a>
-<span class="sourceLineNo">341</span>        Procedure proc = procIter.nextAsProcedure();<a name="line.341"></a>
-<span class="sourceLineNo">342</span>        nonceKey = proc.getNonceKey();<a name="line.342"></a>
-<span class="sourceLineNo">343</span>        procId = proc.getProcId();<a name="line.343"></a>
-<span class="sourceLineNo">344</span><a name="line.344"></a>
-<span class="sourceLineNo">345</span>        if (!proc.hasParent()) {<a name="line.345"></a>
-<span class="sourceLineNo">346</span>          assert !proc.isFinished() : "unexpected finished procedure";<a name="line.346"></a>
-<span class="sourceLineNo">347</span>          rollbackStack.put(proc.getProcId(), new RootProcedureState());<a name="line.347"></a>
-<span class="sourceLineNo">348</span>        }<a name="line.348"></a>
-<span class="sourceLineNo">349</span><a name="line.349"></a>
-<span class="sourceLineNo">350</span>        // add the procedure to the map<a name="line.350"></a>
-<span class="sourceLineNo">351</span>        proc.beforeReplay(getEnvironment());<a name="line.351"></a>
-<span class="sourceLineNo">352</span>        procedures.put(proc.getProcId(), proc);<a name="line.352"></a>
-<span class="sourceLineNo">353</span><a name="line.353"></a>
-<span class="sourceLineNo">354</span>        if (proc.getState() == ProcedureState.RUNNABLE) {<a name="line.354"></a>
-<span class="sourceLineNo">355</span>          runnablesCount++;<a name="line.355"></a>
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-<span class="sourceLineNo">357</span>      }<a name="line.357"></a>
-<span class="sourceLineNo">358</span><a name="line.358"></a>
-<span class="sourceLineNo">359</span>      // add the nonce to the map<a name="line.359"></a>
-<span class="sourceLineNo">360</span>      if (nonceKey != null) {<a name="line.360"></a>
-<span class="sourceLineNo">361</span>        nonceKeysToProcIdsMap.put(nonceKey, procId);<a name="line.361"></a>
-<span class="sourceLineNo">362</span>      }<a name="line.362"></a>
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-<span class="sourceLineNo">364</span><a name="line.364"></a>
-<span class="sourceLineNo">365</span>    // 2. Initialize the stacks<a name="line.365"></a>
-<span class="sourceLineNo">366</span>    ArrayList&lt;Procedure&gt; runnableList = new ArrayList(runnablesCount);<a name="line.366"></a>
-<span class="sourceLineNo">367</span>    HashSet&lt;Procedure&gt; waitingSet = null;<a name="line.367"></a>
-<span class="sourceLineNo">368</span>    procIter.reset();<a name="line.368"></a>
-<span class="sourceLineNo">369</span>    while (procIter.hasNext()) {<a name="line.369"></a>
-<span class="sourceLineNo">370</span>      if (procIter.isNextCompleted()) {<a name="line.370"></a>
-<span class="sourceLineNo">371</span>        procIter.skipNext();<a name="line.371"></a>
-<span class="sourceLineNo">372</span>        continue;<a name="line.372"></a>
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-<span class="sourceLineNo">374</span><a name="line.374"></a>
-<span class="sourceLineNo">375</span>      Procedure proc = procIter.nextAsProcedure();<a name="line.375"></a>
-<span class="sourceLineNo">376</span>      assert !(proc.isFinished() &amp;&amp; !proc.hasParent()) : "unexpected completed proc=" + proc;<a name="line.376"></a>
-<span class="sourceLineNo">377</span><a name="line.377"></a>
-<span class="sourceLineNo">378</span>      if (isDebugEnabled) {<a name="line.378"></a>
-<span class="sourceLineNo">379</span>        LOG.debug(String.format("Loading procedure state=%s isFailed=%s: %s",<a name="line.379"></a>
-<span class="sourceLineNo">380</span>                    proc.getState(), proc.hasException(), proc));<a name="line.380"></a>
-<span class="sourceLineNo">381</span>      }<a name="line.381"></a>
-<span class="sourceLineNo">382</span><a name="line.382"></a>
-<span class="sourceLineNo">383</span>      Long rootProcId = getRootProcedureId(proc);<a name="line.383"></a>
-<span class="sourceLineNo">384</span>      if (rootProcId == null) {<a name="line.384"></a>
-<span class="sourceLineNo">385</span>        // The 'proc' was ready to run but the root procedure was rolledback?<a name="line.385"></a>
-<span class="sourceLineNo">386</span>        runnables.addBack(proc);<a name="line.386"></a>
-<span class="sourceLineNo">387</span>        continue;<a name="line.387"></a>
-<span class="sourceLineNo">388</span>      }<a name="line.388"></a>
-<span class="sourceLineNo">389</span><a name="line.389"></a>
-<span class="sourceLineNo">390</span>      if (proc.hasParent() &amp;&amp; !proc.isFinished()) {<a name="line.390"></a>
-<span class="sourceLineNo">391</span>        Procedure parent = procedures.get(proc.getParentProcId());<a name="line.391"></a>
-<span class="sourceLineNo">392</span>        // corrupted procedures are handled later at step 3<a name="line.392"></a>
-<span class="sourceLineNo">393</span>        if (parent != null) {<a name="line.393"></a>
-<span class="sourceLineNo">394</span>          parent.incChildrenLatch();<a name="line.394"></a>
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+<span class="sourceLineNo">171</span>      while (it.hasNext() &amp;&amp; store.isRunning()) {<a name="line.171"></a>
+<span class="sourceLineNo">172</span>        final Map.Entry&lt;Long, ProcedureInfo&gt; entry = it.next();<a name="line.172"></a>
+<span class="sourceLineNo">173</span>        final ProcedureInfo procInfo = entry.getValue();<a name="line.173"></a>
+<span class="sourceLineNo">174</span><a name="line.174"></a>
+<span class="sourceLineNo">175</span>        // TODO: Select TTL based on Procedure type<a name="line.175"></a>
+<span class="sourceLineNo">176</span>        if ((procInfo.hasClientAckTime() &amp;&amp; (now - procInfo.getClientAckTime()) &gt;= evictAckTtl) ||<a name="line.176"></a>
+<span class="sourceLineNo">177</span>            (now - procInfo.getLastUpdate()) &gt;= evictTtl) {<a name="line.177"></a>
+<span class="sourceLineNo">178</span>          if (isDebugEnabled) {<a name="line.178"></a>
+<span class="sourceLineNo">179</span>            LOG.debug("Evict completed procedure: " + procInfo);<a name="line.179"></a>
+<span class="sourceLineNo">180</span>          }<a name="line.180"></a>
+<span class="sourceLineNo">181</span>          store.delete(entry.getKey());<a name="line.181"></a>
+<span class="sourceLineNo">182</span>          it.remove();<a name="line.182"></a>
+<span class="sourceLineNo">183</span><a name="line.183"></a>
+<span class="sourceLineNo">184</span>          NonceKey nonceKey = procInfo.getNonceKey();<a name="line.184"></a>
+<span class="sourceLineNo">185</span>          if (nonceKey != null) {<a name="line.185"></a>
+<span class="sourceLineNo">186</span>            nonceKeysToProcIdsMap.remove(nonceKey);<a name="line.186"></a>
+<span class="sourceLineNo">187</span>          }<a name="line.187"></a>
+<span class="sourceLineNo">188</span>        }<a name="line.188"></a>
+<span class="sourceLineNo">189</span>      }<a name="line.189"></a>
+<span class="sourceLineNo">190</span>    }<a name="line.190"></a>
+<span class="sourceLineNo">191</span><a name="line.191"></a>
+<span class="sourceLineNo">192</span>    @Override<a name="line.192"></a>
+<span class="sourceLineNo">193</span>    protected Procedure[] execute(final TEnvironment env) {<a name="line.193"></a>
+<span class="sourceLineNo">194</span>      throw new UnsupportedOperationException();<a name="line.194"></a>
+<span class="sourceLineNo">195</span>    }<a name="line.195"></a>
+<span class="sourceLineNo">196</span><a name="line.196"></a>
+<span class="sourceLineNo">197</span>    @Override<a name="line.197"></a>
+<span class="sourceLineNo">198</span>    protected void rollback(final TEnvironment env) {<a name="line.198"></a>
+<span class="sourceLineNo">199</span>      throw new UnsupportedOperationException();<a name="line.199"></a>
+<span class="sourceLineNo">200</span>    }<a name="line.200"></a>
+<span class="sourceLineNo">201</span><a name="line.201"></a>
+<span class="sourceLineNo">202</span>    @Override<a name="line.202"></a>
+<span class="sourceLineNo">203</span>    protected boolean abort(final TEnvironment env) {<a name="line.203"></a>
+<span class="sourceLineNo">204</span>      throw new UnsupportedOperationException();<a name="line.204"></a>
+<span class="sourceLineNo">205</span>    }<a name="line.205"></a>
+<span class="sourceLineNo">206</span><a name="line.206"></a>
+<span class="sourceLineNo">207</span>    @Override<a name="line.207"></a>
+<span class="sourceLineNo">208</span>    public void serializeStateData(final OutputStream stream) {<a name="line.208"></a>
+<span class="sourceLineNo">209</span>      throw new UnsupportedOperationException();<a name="line.209"></a>
+<span class="sourceLineNo">210</span>    }<a name="line.210"></a>
+<span class="sourceLineNo">211</span><a name="line.211"></a>
+<span class="sourceLineNo">212</span>    @Override<a name="line.212"></a>
+<span class="sourceLineNo">213</span>    public void deserializeStateData(final InputStream stream) {<a name="line.213"></a>
+<span class="sourceLineNo">214</span>      throw new UnsupportedOperationException();<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><a name="line.217"></a>
+<span class="sourceLineNo">218</span>  /**<a name="line.218"></a>
+<span class="sourceLineNo">219</span>   * Map the the procId returned by submitProcedure(), the Root-ProcID, to the ProcedureInfo.<a name="line.219"></a>
+<span class="sourceLineNo">220</span>   * Once a Root-Procedure completes (success or failure), the result will be added to this map.<a name="line.220"></a>
+<span class="sourceLineNo">221</span>   * The user of ProcedureExecutor should call getResult(procId) to get the result.<a name="line.221"></a>
+<span class="sourceLineNo">222</span>   */<a name="line.222"></a>
+<span class="sourceLineNo">223</span>  private final ConcurrentHashMap&lt;Long, ProcedureInfo&gt; completed =<a name="line.223"></a>
+<span class="sourceLineNo">224</span>    new ConcurrentHashMap&lt;Long, ProcedureInfo&gt;();<a name="line.224"></a>
+<span class="sourceLineNo">225</span><a name="line.225"></a>
+<span class="sourceLineNo">226</span>  /**<a name="line.226"></a>
+<span class="sourceLineNo">227</span>   * Map the the procId returned by submitProcedure(), the Root-ProcID, to the RootProcedureState.<a name="line.227"></a>
+<span class="sourceLineNo">228</span>   * The RootProcedureState contains the execution stack of the Root-Procedure,<a name="line.228"></a>
+<span class="sourceLineNo">229</span>   * It is added to the map by submitProcedure() and removed on procedure completion.<a name="line.229"></a>
+<span class="sourceLineNo">230</span>   */<a name="line.230"></a>
+<span class="sourceLineNo">231</span>  private final ConcurrentHashMap&lt;Long, RootProcedureState&gt; rollbackStack =<a name="line.231"></a>
+<span class="sourceLineNo">232</span>    new ConcurrentHashMap&lt;Long, RootProcedureState&gt;();<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>   * Helper map to lookup the live procedures by ID.<a name="line.235"></a>
+<span class="sourceLineNo">236</span>   * This map contains every procedure. root-procedures and subprocedures.<a name="line.236"></a>
+<span class="sourceLineNo">237</span>   */<a name="line.237"></a>
+<span class="sourceLineNo">238</span>  private final ConcurrentHashMap&lt;Long, Procedure&gt; procedures =<a name="line.238"></a>
+<span class="sourceLineNo">239</span>    new ConcurrentHashMap&lt;Long, Procedure&gt;();<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>   * Helper map to lookup whether the procedure already issued from the same client.<a name="line.242"></a>
+<span class="sourceLineNo">243</span>   * This map contains every root procedure.<a name="line.243"></a>
+<span class="sourceLineNo">244</span>   */<a name="line.244"></a>
+<span class="sourceLineNo">245</span>  private ConcurrentHashMap&lt;NonceKey, Long&gt; nonceKeysToProcIdsMap =<a name="line.245"></a>
+<span class="sourceLineNo">246</span>      new ConcurrentHashMap&lt;NonceKey, Long&gt;();<a name="line.246"></a>
+<span class="sourceLineNo">247</span><a name="line.247"></a>
+<span class="sourceLineNo">248</span>  /**<a name="line.248"></a>
+<span class="sourceLineNo">249</span>   * Timeout Queue that contains Procedures in a WAITING_TIMEOUT state<a name="line.249"></a>
+<span class="sourceLineNo">250</span>   * or periodic procedures.<a name="line.250"></a>
+<span class="sourceLineNo">251</span>   */<a name="line.251"></a>
+<span class="sourceLineNo">252</span>  private final TimeoutBlockingQueue&lt;Procedure&gt; waitingTimeout =<a name="line.252"></a>
+<span class="sourceLineNo">253</span>    new TimeoutBlockingQueue&lt;Procedure&gt;(new ProcedureTimeoutRetriever());<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>   * Queue that contains runnable procedures.<a name="line.256"></a>
+<span class="sourceLineNo">257</span>   */<a name="line.257"></a>
+<span class="sourceLineNo">258</span>  private final ProcedureRunnableSet runnables;<a name="line.258"></a>
+<span class="sourceLineNo">259</span><a name="line.259"></a>
+<span class="sourceLineNo">260</span>  // TODO<a name="line.260"></a>
+<span class="sourceLineNo">261</span>  private final ReentrantLock submitLock = new ReentrantLock();<a name="line.261"></a>
+<span class="sourceLineNo">262</span>  private final AtomicLong lastProcId = new AtomicLong(-1);<a name="line.262"></a>
+<span class="sourceLineNo">263</span><a name="line.263"></a>
+<span class="sourceLineNo">264</span>  private final CopyOnWriteArrayList&lt;ProcedureExecutorListener&gt; listeners =<a name="line.264"></a>
+<span class="sourceLineNo">265</span>    new CopyOnWriteArrayList&lt;ProcedureExecutorListener&gt;();<a name="line.265"></a>
+<span class="sourceLineNo">266</span><a name="line.266"></a>
+<span class="sourceLineNo">267</span>  private final AtomicInteger activeExecutorCount = new AtomicInteger(0);<a name="line.267"></a>
+<span class="sourceLineNo">268</span>  private final AtomicBoolean running = new AtomicBoolean(false);<a name="line.268"></a>
+<span class="sourceLineNo">269</span>  private final TEnvironment environment;<a name="line.269"></a>
+<span class="sourceLineNo">270</span>  private final ProcedureStore store;<a name="line.270"></a>
+<span class="sourceLineNo">271</span>  private final Configuration conf;<a name="line.271"></a>
+<span class="sourceLineNo">272</span><a name="line.272"></a>
+<span class="sourceLineNo">273</span>  private Thread[] threads;<a name="line.273"></a>
+<span class="sourceLineNo">274</span><a name="line.274"></a>
+<span class="sourceLineNo">275</span>  public ProcedureExecutor(final Configuration conf, final TEnvironment environment,<a name="line.275"></a>
+<span class="sourceLineNo">276</span>      final ProcedureStore store) {<a name="line.276"></a>
+<span class="sourceLineNo">277</span>    this(conf, environment, store, new ProcedureSimpleRunQueue());<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>  public ProcedureExecutor(final Configuration conf, final TEnvironment environment,<a name="line.280"></a>
+<span class="sourceLineNo">281</span>      final ProcedureStore store, final ProcedureRunnableSet runqueue) {<a name="line.281"></a>
+<span class="sourceLineNo">282</span>    this.environment = environment;<a name="line.282"></a>
+<span class="sourceLineNo">283</span>    this.runnables = runqueue;<a name="line.283"></a>
+<span class="sourceLineNo">284</span>    this.store = store;<a name="line.284"></a>
+<span class="sourceLineNo">285</span>    this.conf = conf;<a name="line.285"></a>
+<span class="sourceLineNo">286</span>  }<a name="line.286"></a>
+<span class="sourceLineNo">287</span><a name="line.287"></a>
+<span class="sourceLineNo">288</span>  private void load(final boolean abortOnCorruption) throws IOException {<a name="line.288"></a>
+<span class="sourceLineNo">289</span>    Preconditions.checkArgument(completed.isEmpty());<a name="line.289"></a>
+<span class="sourceLineNo">290</span>    Preconditions.checkArgument(rollbackStack.isEmpty());<a name="line.290"></a>
+<span class="sourceLineNo">291</span>    Preconditions.checkArgument(procedures.isEmpty());<a name="line.291"></a>
+<span class="sourceLineNo">292</span>    Preconditions.checkArgument(waitingTimeout.isEmpty());<a name="line.292"></a>
+<span class="sourceLineNo">293</span>    Preconditions.checkArgument(runnables.size() == 0);<a name="line.293"></a>
+<span class="sourceLineNo">294</span><a name="line.294"></a>
+<span class="sourceLineNo">295</span>    store.load(new ProcedureStore.ProcedureLoader() {<a name="line.295"></a>
+<span class="sourceLineNo">296</span>      @Override<a name="line.296"></a>
+<span class="sourceLineNo">297</span>      public void setMaxProcId(long maxProcId) {<a name="line.297"></a>
+<span class="sourceLineNo">298</span>        assert lastProcId.get() &lt; 0 : "expected only one call to setMaxProcId()";<a name="line.298"></a>
+<span class="sourceLineNo">299</span>        LOG.debug("load procedures maxProcId=" + maxProcId);<a name="line.299"></a>
+<span class="sourceLineNo">300</span>        lastProcId.set(maxProcId);<a name="line.300"></a>
+<span class="sourceLineNo">301</span>      }<a name="line.301"></a>
+<span class="sourceLineNo">302</span><a name="line.302"></a>
+<span class="sourceLineNo">303</span>      @Override<a name="line.303"></a>
+<span class="sourceLineNo">304</span>      public void load(ProcedureIterator procIter) throws IOException {<a name="line.304"></a>
+<span class="sourceLineNo">305</span>        loadProcedures(procIter, abortOnCorruption);<a name="line.305"></a>
+<span class="sourceLineNo">306</span>      }<a name="line.306"></a>
+<span class="sourceLineNo">307</span><a name="line.307"></a>
+<span class="sourceLineNo">308</span>      @Override<a name="line.308"></a>
+<span class="sourceLineNo">309</span>      public void handleCorrupted(ProcedureIterator procIter) throws IOException {<a name="line.309"></a>
+<span class="sourceLineNo">310</span>        int corruptedCount = 0;<a name="line.310"></a>
+<span class="sourceLineNo">311</span>        while (procIter.hasNext()) {<a name="line.311"></a>
+<span class="sourceLineNo">312</span>          ProcedureInfo proc = procIter.nextAsProcedureInfo();<a name="line.312"></a>
+<span class="sourceLineNo">313</span>          LOG.error("corrupted procedure: " + proc);<a name="line.313"></a>
+<span class="sourceLineNo">314</span>          corruptedCount++;<a name="line.314"></a>
+<span class="sourceLineNo">315</span>        }<a name="line.315"></a>
+<span class="sourceLineNo">316</span>        if (abortOnCorruption &amp;&amp; corruptedCount &gt; 0) {<a name="line.316"></a>
+<span class="sourceLineNo">317</span>          throw new IOException("found " + corruptedCount + " procedures on replay");<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>  }<a name="line.321"></a>
+<span class="sourceLineNo">322</span><a name="line.322"></a>
+<span class="sourceLineNo">323</span>  private void loadProcedures(final ProcedureIterator procIter,<a name="line.323"></a>
+<span class="sourceLineNo">324</span>      final boolean abortOnCorruption) throws IOException {<a name="line.324"></a>
+<span class="sourceLineNo">325</span>    final boolean isDebugEnabled = LOG.isDebugEnabled();<a name="line.325"></a>
+<span class="sourceLineNo">326</span><a name="line.326"></a>
+<span class="sourceLineNo">327</span>    // 1. Build the rollback stack<a name="line.327"></a>
+<span class="sourceLineNo">328</span>    int runnablesCount = 0;<a name="line.328"></a>
+<span class="sourceLineNo">329</span>    while (procIter.hasNext()) {<a name="line.329"></a>
+<span class="sourceLineNo">330</span>      final NonceKey nonceKey;<a name="line.330"></a>
+<span class="sourceLineNo">331</span>      final long procId;<a name="line.331"></a>
+<span class="sourceLineNo">332</span><a name="line.332"></a>
+<span class="sourceLineNo">333</span>      if (procIter.isNextCompleted()) {<a name="line.333"></a>
+<span class="sourceLineNo">334</span>        ProcedureInfo proc = procIter.nextAsProcedureInfo();<a name="line.334"></a>
+<span class="sourceLineNo">335</span>        nonceKey = proc.getNonceKey();<a name="line.335"></a>
+<span class="sourceLineNo">336</span>        procId = proc.getProcId();<a name="line.336"></a>
+<span class="sourceLineNo">337</span>        completed.put(proc.getProcId(), proc);<a name="line.337"></a>
+<span class="sourceLineNo">338</span>        if (isDebugEnabled) {<a name="line.338"></a>
+<span class="sourceLineNo">339</span>          LOG.debug("The procedure is completed: " + proc);<a name="line.339"></a>
+<span class="sourceLineNo">340</span>        }<a name="line.340"></a>
+<span class="sourceLineNo">341</span>      } else {<a name="line.341"></a>
+<span class="sourceLineNo">342</span>        Procedure proc = procIter.nextAsProcedure();<a name="line.342"></a>
+<span class="sourceLineNo">343</span>        nonceKey = proc.getNonceKey();<a name="line.343"></a>
+<span class="sourceLineNo">344</span>        procId = proc.getProcId();<a name="line.344"></a>
+<span class="sourceLineNo">345</span><a name="line.345"></a>
+<span class="sourceLineNo">346</span>        if (!proc.hasParent()) {<a name="line.346"></a>
+<span class="sourceLineNo">347</span>          assert !proc.isFinished() : "unexpected finished procedure";<a name="line.347"></a>
+<span class="sourceLineNo">348</span>          rollbackStack.put(proc.getProcId(), new RootProcedureState());<a name="line.348"></a>
+<span class="sourceLineNo">349</span>        }<a name="line.349"></a>
+<span class="sourceLineNo">350</span><a name="line.350"></a>
+<span class="sourceLineNo">351</span>        // add the procedure to the map<a name="line.351"></a>
+<span class="sourceLineNo">352</span>        proc.beforeReplay(getEnvironment());<a name="line.352"></a>
+<span class="sourceLineNo">353</span>        procedures.put(proc.getProcId(), proc);<a name="line.353"></a>
+<span class="sourceLineNo">354</span><a name="line.354"></a>
+<span class="sourceLineNo">355</span>        if (proc.getState() == ProcedureState.RUNNABLE) {<a name="line.355"></a>
+<span class="sourceLineNo">356</span>          runnablesCount++;<a name="line.356"></a>
+<span class="sourceLineNo">357</span>        }<a name="line.357"></a>
+<span class="sourceLineNo">358</span>      }<a name="line.358"></a>
+<span class="sourceLineNo">359</span><a name="line.359"></a>
+<span class="sourceLineNo">360</span>      // add the nonce to the map<a name="line.360"></a>
+<span class="sourceLineNo">361</span>      if (nonceKey != null) {<a name="line.361"></a>
+<span class="sourceLineNo">362</span>        nonceKeysToProcIdsMap.put(nonceKey, procId);<a name="line.362"></a>
+<span class="sourceLineNo">363</span>      }<a name="line.363"></a>
+<span class="sourceLineNo">364</span>    }<a name="line.364"></a>
+<span class="sourceLineNo">365</span><a name="line.365"></a>
+<span class="sourceLineNo">366</span>    // 2. Initialize the stacks<a name="line.366"></a>
+<span class="sourceLineNo">367</span>    ArrayList&lt;Procedure&gt; runnableList = new ArrayList(runnablesCount);<a name="line.367"></a>
+<span class="sourceLineNo">368</span>    HashSet&lt;Procedure&gt; waitingSet = null;<a name="line.368"></a>
+<span class="sourceLineNo">369</span>    procIter.reset();<a name="line.369"></a>
+<span class="sourceLineNo">370</span>    while (procIter.hasNext()) {<a name="line.370"></a>
+<span class="sourceLineNo">371</span>      if (procIter.isNextCompleted()) {<a name="line.371"></a>
+<span class="sourceLineNo">372</span>        procIter.skipNext();<a name="line.372"></a>
+<span class="sourceLineNo">373</span>        continue;<a name="line.373"></a>
+<span class="sourceLineNo">374</span>      }<a name="line.374"></a>
+<span class="sourceLineNo">375</span><a name="line.375"></a>
+<span class="sourceLineNo">376</span>      Procedure proc = procIter.nextAsProcedure();<a name="line.376"></a>
+<span class="sourceLineNo">377</span>      assert !(proc.isFinished() &amp;&amp; !proc.hasParent()) : "unexpected completed proc=" + proc;<a name="line.377"></a>
+<span class="sourceLineNo">378</span><a name="line.378"></a>
+<span class="sourceLineNo">379</span>      if (isDebugEnabled) {<a name="line.379"></a>
+<span class="sourceLineNo">380</span>        LOG.debug(String.format("Loading procedure state=%s isFailed=%s: %s",<a name="line.380"></a>
+<span class="sourceLineNo">381</span>                    proc.getState

<TRUNCATED>

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