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Posted to commits@hbase.apache.org by gi...@apache.org on 2018/10/29 14:55:11 UTC
[29/51] [partial] hbase-site git commit: Published site at
d5e4faacc354c1bc4d93efa71ca97ee3a056123e.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/b5e107c3/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/ProcedureExecutor.KeepAliveWorkerThread.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/ProcedureExecutor.KeepAliveWorkerThread.html b/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/ProcedureExecutor.KeepAliveWorkerThread.html
index 0af8acd..c5f21ac 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/ProcedureExecutor.KeepAliveWorkerThread.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/ProcedureExecutor.KeepAliveWorkerThread.html
@@ -645,1615 +645,1597 @@
<span class="sourceLineNo">637</span> proc.afterReplay(getEnvironment());<a name="line.637"></a>
<span class="sourceLineNo">638</span> }<a name="line.638"></a>
<span class="sourceLineNo">639</span> });<a name="line.639"></a>
-<span class="sourceLineNo">640</span><a name="line.640"></a>
-<span class="sourceLineNo">641</span> // 4. Push the procedures to the timeout executor<a name="line.641"></a>
-<span class="sourceLineNo">642</span> waitingTimeoutList.forEach(proc -> {<a name="line.642"></a>
-<span class="sourceLineNo">643</span> proc.afterReplay(getEnvironment());<a name="line.643"></a>
-<span class="sourceLineNo">644</span> timeoutExecutor.add(proc);<a name="line.644"></a>
-<span class="sourceLineNo">645</span> });<a name="line.645"></a>
-<span class="sourceLineNo">646</span> // 5. restore locks<a name="line.646"></a>
-<span class="sourceLineNo">647</span> restoreLocks();<a name="line.647"></a>
-<span class="sourceLineNo">648</span> // 6. Push the procedure to the scheduler<a name="line.648"></a>
-<span class="sourceLineNo">649</span> failedList.forEach(scheduler::addBack);<a name="line.649"></a>
-<span class="sourceLineNo">650</span> runnableList.forEach(p -> {<a name="line.650"></a>
-<span class="sourceLineNo">651</span> p.afterReplay(getEnvironment());<a name="line.651"></a>
-<span class="sourceLineNo">652</span> if (!p.hasParent()) {<a name="line.652"></a>
-<span class="sourceLineNo">653</span> sendProcedureLoadedNotification(p.getProcId());<a name="line.653"></a>
-<span class="sourceLineNo">654</span> }<a name="line.654"></a>
-<span class="sourceLineNo">655</span> // If the procedure holds the lock, put the procedure in front<a name="line.655"></a>
-<span class="sourceLineNo">656</span> // If its parent holds the lock, put the procedure in front<a name="line.656"></a>
-<span class="sourceLineNo">657</span> // TODO. Is that possible that its ancestor holds the lock?<a name="line.657"></a>
-<span class="sourceLineNo">658</span> // For now, the deepest procedure hierarchy is:<a name="line.658"></a>
-<span class="sourceLineNo">659</span> // ModifyTableProcedure -> ReopenTableProcedure -><a name="line.659"></a>
-<span class="sourceLineNo">660</span> // MoveTableProcedure -> Unassign/AssignProcedure<a name="line.660"></a>
-<span class="sourceLineNo">661</span> // But ModifyTableProcedure and ReopenTableProcedure won't hold the lock<a name="line.661"></a>
-<span class="sourceLineNo">662</span> // So, check parent lock is enough(a tricky case is resovled by HBASE-21384).<a name="line.662"></a>
-<span class="sourceLineNo">663</span> // If some one change or add new procedures making 'grandpa' procedure<a name="line.663"></a>
-<span class="sourceLineNo">664</span> // holds the lock, but parent procedure don't hold the lock, there will<a name="line.664"></a>
-<span class="sourceLineNo">665</span> // be a problem here. We have to check one procedure's ancestors.<a name="line.665"></a>
-<span class="sourceLineNo">666</span> // And we need to change LockAndQueue.hasParentLock(Procedure<?> proc) method<a name="line.666"></a>
-<span class="sourceLineNo">667</span> // to check all ancestors too.<a name="line.667"></a>
-<span class="sourceLineNo">668</span> if (p.isLockedWhenLoading() || (p.hasParent() && procedures<a name="line.668"></a>
-<span class="sourceLineNo">669</span> .get(p.getParentProcId()).isLockedWhenLoading())) {<a name="line.669"></a>
-<span class="sourceLineNo">670</span> scheduler.addFront(p, false);<a name="line.670"></a>
-<span class="sourceLineNo">671</span> } else {<a name="line.671"></a>
-<span class="sourceLineNo">672</span> // if it was not, it can wait.<a name="line.672"></a>
-<span class="sourceLineNo">673</span> scheduler.addBack(p, false);<a name="line.673"></a>
-<span class="sourceLineNo">674</span> }<a name="line.674"></a>
-<span class="sourceLineNo">675</span> });<a name="line.675"></a>
-<span class="sourceLineNo">676</span> // After all procedures put into the queue, signal the worker threads.<a name="line.676"></a>
-<span class="sourceLineNo">677</span> // Otherwise, there is a race condition. See HBASE-21364.<a name="line.677"></a>
-<span class="sourceLineNo">678</span> scheduler.signalAll();<a name="line.678"></a>
-<span class="sourceLineNo">679</span> }<a name="line.679"></a>
+<span class="sourceLineNo">640</span> // 4. restore locks<a name="line.640"></a>
+<span class="sourceLineNo">641</span> restoreLocks();<a name="line.641"></a>
+<span class="sourceLineNo">642</span><a name="line.642"></a>
+<span class="sourceLineNo">643</span> // 5. Push the procedures to the timeout executor<a name="line.643"></a>
+<span class="sourceLineNo">644</span> waitingTimeoutList.forEach(proc -> {<a name="line.644"></a>
+<span class="sourceLineNo">645</span> proc.afterReplay(getEnvironment());<a name="line.645"></a>
+<span class="sourceLineNo">646</span> timeoutExecutor.add(proc);<a name="line.646"></a>
+<span class="sourceLineNo">647</span> });<a name="line.647"></a>
+<span class="sourceLineNo">648</span><a name="line.648"></a>
+<span class="sourceLineNo">649</span> // 6. Push the procedure to the scheduler<a name="line.649"></a>
+<span class="sourceLineNo">650</span> failedList.forEach(scheduler::addBack);<a name="line.650"></a>
+<span class="sourceLineNo">651</span> runnableList.forEach(p -> {<a name="line.651"></a>
+<span class="sourceLineNo">652</span> p.afterReplay(getEnvironment());<a name="line.652"></a>
+<span class="sourceLineNo">653</span> if (!p.hasParent()) {<a name="line.653"></a>
+<span class="sourceLineNo">654</span> sendProcedureLoadedNotification(p.getProcId());<a name="line.654"></a>
+<span class="sourceLineNo">655</span> }<a name="line.655"></a>
+<span class="sourceLineNo">656</span> scheduler.addBack(p);<a name="line.656"></a>
+<span class="sourceLineNo">657</span> });<a name="line.657"></a>
+<span class="sourceLineNo">658</span> // After all procedures put into the queue, signal the worker threads.<a name="line.658"></a>
+<span class="sourceLineNo">659</span> // Otherwise, there is a race condition. See HBASE-21364.<a name="line.659"></a>
+<span class="sourceLineNo">660</span> scheduler.signalAll();<a name="line.660"></a>
+<span class="sourceLineNo">661</span> }<a name="line.661"></a>
+<span class="sourceLineNo">662</span><a name="line.662"></a>
+<span class="sourceLineNo">663</span> /**<a name="line.663"></a>
+<span class="sourceLineNo">664</span> * Initialize the procedure executor, but do not start workers. We will start them later.<a name="line.664"></a>
+<span class="sourceLineNo">665</span> * <p/><a name="line.665"></a>
+<span class="sourceLineNo">666</span> * It calls ProcedureStore.recoverLease() and ProcedureStore.load() to recover the lease, and<a name="line.666"></a>
+<span class="sourceLineNo">667</span> * ensure a single executor, and start the procedure replay to resume and recover the previous<a name="line.667"></a>
+<span class="sourceLineNo">668</span> * pending and in-progress procedures.<a name="line.668"></a>
+<span class="sourceLineNo">669</span> * @param numThreads number of threads available for procedure execution.<a name="line.669"></a>
+<span class="sourceLineNo">670</span> * @param abortOnCorruption true if you want to abort your service in case a corrupted procedure<a name="line.670"></a>
+<span class="sourceLineNo">671</span> * is found on replay. otherwise false.<a name="line.671"></a>
+<span class="sourceLineNo">672</span> */<a name="line.672"></a>
+<span class="sourceLineNo">673</span> public void init(int numThreads, boolean abortOnCorruption) throws IOException {<a name="line.673"></a>
+<span class="sourceLineNo">674</span> // We have numThreads executor + one timer thread used for timing out<a name="line.674"></a>
+<span class="sourceLineNo">675</span> // procedures and triggering periodic procedures.<a name="line.675"></a>
+<span class="sourceLineNo">676</span> this.corePoolSize = numThreads;<a name="line.676"></a>
+<span class="sourceLineNo">677</span> this.maxPoolSize = 10 * numThreads;<a name="line.677"></a>
+<span class="sourceLineNo">678</span> LOG.info("Starting {} core workers (bigger of cpus/4 or 16) with max (burst) worker count={}",<a name="line.678"></a>
+<span class="sourceLineNo">679</span> corePoolSize, maxPoolSize);<a name="line.679"></a>
<span class="sourceLineNo">680</span><a name="line.680"></a>
-<span class="sourceLineNo">681</span> /**<a name="line.681"></a>
-<span class="sourceLineNo">682</span> * Initialize the procedure executor, but do not start workers. We will start them later.<a name="line.682"></a>
-<span class="sourceLineNo">683</span> * <p/><a name="line.683"></a>
-<span class="sourceLineNo">684</span> * It calls ProcedureStore.recoverLease() and ProcedureStore.load() to recover the lease, and<a name="line.684"></a>
-<span class="sourceLineNo">685</span> * ensure a single executor, and start the procedure replay to resume and recover the previous<a name="line.685"></a>
-<span class="sourceLineNo">686</span> * pending and in-progress procedures.<a name="line.686"></a>
-<span class="sourceLineNo">687</span> * @param numThreads number of threads available for procedure execution.<a name="line.687"></a>
-<span class="sourceLineNo">688</span> * @param abortOnCorruption true if you want to abort your service in case a corrupted procedure<a name="line.688"></a>
-<span class="sourceLineNo">689</span> * is found on replay. otherwise false.<a name="line.689"></a>
-<span class="sourceLineNo">690</span> */<a name="line.690"></a>
-<span class="sourceLineNo">691</span> public void init(int numThreads, boolean abortOnCorruption) throws IOException {<a name="line.691"></a>
-<span class="sourceLineNo">692</span> // We have numThreads executor + one timer thread used for timing out<a name="line.692"></a>
-<span class="sourceLineNo">693</span> // procedures and triggering periodic procedures.<a name="line.693"></a>
-<span class="sourceLineNo">694</span> this.corePoolSize = numThreads;<a name="line.694"></a>
-<span class="sourceLineNo">695</span> this.maxPoolSize = 10 * numThreads;<a name="line.695"></a>
-<span class="sourceLineNo">696</span> LOG.info("Starting {} core workers (bigger of cpus/4 or 16) with max (burst) worker count={}",<a name="line.696"></a>
-<span class="sourceLineNo">697</span> corePoolSize, maxPoolSize);<a name="line.697"></a>
-<span class="sourceLineNo">698</span><a name="line.698"></a>
-<span class="sourceLineNo">699</span> this.threadGroup = new ThreadGroup("PEWorkerGroup");<a name="line.699"></a>
-<span class="sourceLineNo">700</span> this.timeoutExecutor = new TimeoutExecutorThread<>(this, threadGroup);<a name="line.700"></a>
-<span class="sourceLineNo">701</span><a name="line.701"></a>
-<span class="sourceLineNo">702</span> // Create the workers<a name="line.702"></a>
-<span class="sourceLineNo">703</span> workerId.set(0);<a name="line.703"></a>
-<span class="sourceLineNo">704</span> workerThreads = new CopyOnWriteArrayList<>();<a name="line.704"></a>
-<span class="sourceLineNo">705</span> for (int i = 0; i < corePoolSize; ++i) {<a name="line.705"></a>
-<span class="sourceLineNo">706</span> workerThreads.add(new WorkerThread(threadGroup));<a name="line.706"></a>
-<span class="sourceLineNo">707</span> }<a name="line.707"></a>
-<span class="sourceLineNo">708</span><a name="line.708"></a>
-<span class="sourceLineNo">709</span> long st, et;<a name="line.709"></a>
-<span class="sourceLineNo">710</span><a name="line.710"></a>
-<span class="sourceLineNo">711</span> // Acquire the store lease.<a name="line.711"></a>
-<span class="sourceLineNo">712</span> st = System.nanoTime();<a name="line.712"></a>
-<span class="sourceLineNo">713</span> store.recoverLease();<a name="line.713"></a>
-<span class="sourceLineNo">714</span> et = System.nanoTime();<a name="line.714"></a>
-<span class="sourceLineNo">715</span> LOG.info("Recovered {} lease in {}", store.getClass().getSimpleName(),<a name="line.715"></a>
-<span class="sourceLineNo">716</span> StringUtils.humanTimeDiff(TimeUnit.NANOSECONDS.toMillis(et - st)));<a name="line.716"></a>
-<span class="sourceLineNo">717</span><a name="line.717"></a>
-<span class="sourceLineNo">718</span> // start the procedure scheduler<a name="line.718"></a>
-<span class="sourceLineNo">719</span> scheduler.start();<a name="line.719"></a>
-<span class="sourceLineNo">720</span><a name="line.720"></a>
-<span class="sourceLineNo">721</span> // TODO: Split in two steps.<a name="line.721"></a>
-<span class="sourceLineNo">722</span> // TODO: Handle corrupted procedures (currently just a warn)<a name="line.722"></a>
-<span class="sourceLineNo">723</span> // The first one will make sure that we have the latest id,<a name="line.723"></a>
-<span class="sourceLineNo">724</span> // so we can start the threads and accept new procedures.<a name="line.724"></a>
-<span class="sourceLineNo">725</span> // The second step will do the actual load of old procedures.<a name="line.725"></a>
-<span class="sourceLineNo">726</span> st = System.nanoTime();<a name="line.726"></a>
-<span class="sourceLineNo">727</span> load(abortOnCorruption);<a name="line.727"></a>
-<span class="sourceLineNo">728</span> et = System.nanoTime();<a name="line.728"></a>
-<span class="sourceLineNo">729</span> LOG.info("Loaded {} in {}", store.getClass().getSimpleName(),<a name="line.729"></a>
-<span class="sourceLineNo">730</span> StringUtils.humanTimeDiff(TimeUnit.NANOSECONDS.toMillis(et - st)));<a name="line.730"></a>
-<span class="sourceLineNo">731</span> }<a name="line.731"></a>
+<span class="sourceLineNo">681</span> this.threadGroup = new ThreadGroup("PEWorkerGroup");<a name="line.681"></a>
+<span class="sourceLineNo">682</span> this.timeoutExecutor = new TimeoutExecutorThread<>(this, threadGroup);<a name="line.682"></a>
+<span class="sourceLineNo">683</span><a name="line.683"></a>
+<span class="sourceLineNo">684</span> // Create the workers<a name="line.684"></a>
+<span class="sourceLineNo">685</span> workerId.set(0);<a name="line.685"></a>
+<span class="sourceLineNo">686</span> workerThreads = new CopyOnWriteArrayList<>();<a name="line.686"></a>
+<span class="sourceLineNo">687</span> for (int i = 0; i < corePoolSize; ++i) {<a name="line.687"></a>
+<span class="sourceLineNo">688</span> workerThreads.add(new WorkerThread(threadGroup));<a name="line.688"></a>
+<span class="sourceLineNo">689</span> }<a name="line.689"></a>
+<span class="sourceLineNo">690</span><a name="line.690"></a>
+<span class="sourceLineNo">691</span> long st, et;<a name="line.691"></a>
+<span class="sourceLineNo">692</span><a name="line.692"></a>
+<span class="sourceLineNo">693</span> // Acquire the store lease.<a name="line.693"></a>
+<span class="sourceLineNo">694</span> st = System.nanoTime();<a name="line.694"></a>
+<span class="sourceLineNo">695</span> store.recoverLease();<a name="line.695"></a>
+<span class="sourceLineNo">696</span> et = System.nanoTime();<a name="line.696"></a>
+<span class="sourceLineNo">697</span> LOG.info("Recovered {} lease in {}", store.getClass().getSimpleName(),<a name="line.697"></a>
+<span class="sourceLineNo">698</span> StringUtils.humanTimeDiff(TimeUnit.NANOSECONDS.toMillis(et - st)));<a name="line.698"></a>
+<span class="sourceLineNo">699</span><a name="line.699"></a>
+<span class="sourceLineNo">700</span> // start the procedure scheduler<a name="line.700"></a>
+<span class="sourceLineNo">701</span> scheduler.start();<a name="line.701"></a>
+<span class="sourceLineNo">702</span><a name="line.702"></a>
+<span class="sourceLineNo">703</span> // TODO: Split in two steps.<a name="line.703"></a>
+<span class="sourceLineNo">704</span> // TODO: Handle corrupted procedures (currently just a warn)<a name="line.704"></a>
+<span class="sourceLineNo">705</span> // The first one will make sure that we have the latest id,<a name="line.705"></a>
+<span class="sourceLineNo">706</span> // so we can start the threads and accept new procedures.<a name="line.706"></a>
+<span class="sourceLineNo">707</span> // The second step will do the actual load of old procedures.<a name="line.707"></a>
+<span class="sourceLineNo">708</span> st = System.nanoTime();<a name="line.708"></a>
+<span class="sourceLineNo">709</span> load(abortOnCorruption);<a name="line.709"></a>
+<span class="sourceLineNo">710</span> et = System.nanoTime();<a name="line.710"></a>
+<span class="sourceLineNo">711</span> LOG.info("Loaded {} in {}", store.getClass().getSimpleName(),<a name="line.711"></a>
+<span class="sourceLineNo">712</span> StringUtils.humanTimeDiff(TimeUnit.NANOSECONDS.toMillis(et - st)));<a name="line.712"></a>
+<span class="sourceLineNo">713</span> }<a name="line.713"></a>
+<span class="sourceLineNo">714</span><a name="line.714"></a>
+<span class="sourceLineNo">715</span> /**<a name="line.715"></a>
+<span class="sourceLineNo">716</span> * Start the workers.<a name="line.716"></a>
+<span class="sourceLineNo">717</span> */<a name="line.717"></a>
+<span class="sourceLineNo">718</span> public void startWorkers() throws IOException {<a name="line.718"></a>
+<span class="sourceLineNo">719</span> if (!running.compareAndSet(false, true)) {<a name="line.719"></a>
+<span class="sourceLineNo">720</span> LOG.warn("Already running");<a name="line.720"></a>
+<span class="sourceLineNo">721</span> return;<a name="line.721"></a>
+<span class="sourceLineNo">722</span> }<a name="line.722"></a>
+<span class="sourceLineNo">723</span> // Start the executors. Here we must have the lastProcId set.<a name="line.723"></a>
+<span class="sourceLineNo">724</span> LOG.trace("Start workers {}", workerThreads.size());<a name="line.724"></a>
+<span class="sourceLineNo">725</span> timeoutExecutor.start();<a name="line.725"></a>
+<span class="sourceLineNo">726</span> for (WorkerThread worker: workerThreads) {<a name="line.726"></a>
+<span class="sourceLineNo">727</span> worker.start();<a name="line.727"></a>
+<span class="sourceLineNo">728</span> }<a name="line.728"></a>
+<span class="sourceLineNo">729</span><a name="line.729"></a>
+<span class="sourceLineNo">730</span> // Internal chores<a name="line.730"></a>
+<span class="sourceLineNo">731</span> timeoutExecutor.add(new WorkerMonitor());<a name="line.731"></a>
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-<span class="sourceLineNo">733</span> /**<a name="line.733"></a>
-<span class="sourceLineNo">734</span> * Start the workers.<a name="line.734"></a>
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-<span class="sourceLineNo">736</span> public void startWorkers() throws IOException {<a name="line.736"></a>
-<span class="sourceLineNo">737</span> if (!running.compareAndSet(false, true)) {<a name="line.737"></a>
-<span class="sourceLineNo">738</span> LOG.warn("Already running");<a name="line.738"></a>
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+<span class="sourceLineNo">734</span> addChore(new CompletedProcedureCleaner<>(conf, store, completed, nonceKeysToProcIdsMap));<a name="line.734"></a>
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+<span class="sourceLineNo">736</span><a name="line.736"></a>
+<span class="sourceLineNo">737</span> public void stop() {<a name="line.737"></a>
+<span class="sourceLineNo">738</span> if (!running.getAndSet(false)) {<a name="line.738"></a>
<span class="sourceLineNo">739</span> return;<a name="line.739"></a>
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-<span class="sourceLineNo">742</span> LOG.trace("Start workers {}", workerThreads.size());<a name="line.742"></a>
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-<span class="sourceLineNo">748</span> // Internal chores<a name="line.748"></a>
-<span class="sourceLineNo">749</span> timeoutExecutor.add(new WorkerMonitor());<a name="line.749"></a>
+<span class="sourceLineNo">741</span><a name="line.741"></a>
+<span class="sourceLineNo">742</span> LOG.info("Stopping");<a name="line.742"></a>
+<span class="sourceLineNo">743</span> scheduler.stop();<a name="line.743"></a>
+<span class="sourceLineNo">744</span> timeoutExecutor.sendStopSignal();<a name="line.744"></a>
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+<span class="sourceLineNo">746</span><a name="line.746"></a>
+<span class="sourceLineNo">747</span> @VisibleForTesting<a name="line.747"></a>
+<span class="sourceLineNo">748</span> public void join() {<a name="line.748"></a>
+<span class="sourceLineNo">749</span> assert !isRunning() : "expected not running";<a name="line.749"></a>
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-<span class="sourceLineNo">751</span> // Add completed cleaner chore<a name="line.751"></a>
-<span class="sourceLineNo">752</span> addChore(new CompletedProcedureCleaner<>(conf, store, completed, nonceKeysToProcIdsMap));<a name="line.752"></a>
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-<span class="sourceLineNo">760</span> LOG.info("Stopping");<a name="line.760"></a>
-<span class="sourceLineNo">761</span> scheduler.stop();<a name="line.761"></a>
-<span class="sourceLineNo">762</span> timeoutExecutor.sendStopSignal();<a name="line.762"></a>
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-<span class="sourceLineNo">1018</span> // ==========================================================================<a name="line.1018"></a>
-<span class="sourceLineNo">1019</span> // Submit/Abort Procedure<a name="line.1019"></a>
-<span class="sourceLineNo">1020</span> // ==========================================================================<a name="line.1020"></a>
-<span class="sourceLineNo">1021</span> /**<a name="line.1021"></a>
-<span class="sourceLineNo">1022</span> * Add a new root-procedure to the executor.<a name="line.1022"></a>
-<span class="sourceLineNo">1023</span> * @param proc the new procedure to execute.<a name="line.1023"></a>
-<span class="sourceLineNo">1024</span> * @return the procedure id, that can be used to monitor the operation<a name="line.1024"></a>
-<span class="sourceLineNo">1025</span> */<a name="line.1025"></a>
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-<span class="sourceLineNo">1027</span> return submitProcedure(proc, null);<a name="line.1027"></a>
-<span class="sourceLineNo">1028</span> }<a name="line.1028"></a>
-<span class="sourceLineNo">1029</span><a name="line.1029"></a>
-<span class="sourceLineNo">1030</span> /**<a name="line.1030"></a>
-<span class="sourceLineNo">1031</span> * Bypass a procedure. If the procedure is set to bypass, all the logic in<a name="line.1031"></a>
-<span class="sourceLineNo">1032</span> * execute/rollback will be ignored and it will return success, whatever.<a name="line.1032"></a>
-<span class="sourceLineNo">1033</span> * It is used to recover buggy stuck procedures, releasing the lock resources<a name="line.1033"></a>
-<span class="sourceLineNo">1034</span> * and letting other procedures run. Bypassing one procedure (and its ancestors will<a name="line.1034"></a>
-<span class="sourceLineNo">1035</span> * be bypassed automatically) may leave the cluster in a middle state, e.g. region<a name="line.1035"></a>
-<span class="sourceLineNo">1036</span> * not assigned, or some hdfs files left behind. After getting rid of those stuck procedures,<a name="line.1036"></a>
-<span class="sourceLineNo">1037</span> * the operators may have to do some clean up on hdfs or schedule some assign procedures<a name="line.1037"></a>
-<span class="sourceLineNo">1038</span> * to let region online. DO AT YOUR OWN RISK.<a name="line.1038"></a>
-<span class="sourceLineNo">1039</span> * <p><a name="line.1039"></a>
-<span class="sourceLineNo">1040</span> * A procedure can be bypassed only if<a name="line.1040"></a>
-<span class="sourceLineNo">1041</span> * 1. The procedure is in state of RUNNABLE, WAITING, WAITING_TIMEOUT<a name="line.1041"></a>
-<span class="sourceLineNo">1042</span> * or it is a root procedure without any child.<a name="line.1042"></a>
-<span class="sourceLineNo">1043</span> * 2. No other worker thread is executing it<a name="line.1043"></a>
-<span class="sourceLineNo">1044</span> * 3. No child procedure has been submitted<a name="line.1044"></a>
-<span class="sourceLineNo">1045</span> *<a name="line.1045"></a>
-<span class="sourceLineNo">1046</span> * <p><a name="line.1046"></a>
-<span class="sourceLineNo">1047</span> * If all the requirements are meet, the procedure and its ancestors will be<a name="line.1047"></a>
-<span class="sourceLineNo">1048</span> * bypassed and persisted to WAL.<a name="line.1048"></a>
-<span class="sourceLineNo">1049</span> *<a name="line.1049"></a>
-<span class="sourceLineNo">1050</span> * <p><a name="line.1050"></a>
-<span class="sourceLineNo">1051</span> * If the procedure is in WAITING state, will set it to RUNNABLE add it to run queue.<a name="line.1051"></a>
-<span class="sourceLineNo">1052</span> * TODO: What about WAITING_TIMEOUT?<a name="line.1052"></a>
-<span class="sourceLineNo">1053</span> * @param pids the procedure id<a name="line.1053"></a>
-<span class="sourceLineNo">1054</span> * @param lockWait time to wait lock<a name="line.1054"></a>
-<span class="sourceLineNo">1055</span> * @param force if force set to true, we will bypass the procedure even if it is executing.<a name="line.1055"></a>
-<span class="sourceLineNo">1056</span> * This is for procedures which can't break out during executing(due to bug, mostly)<a name="line.1056"></a>
-<span class="sourceLineNo">1057</span> * In this case, bypassing the procedure is not enough, since it is already stuck<a name="line.1057"></a>
-<span class="sourceLineNo">1058</span> * there. We need to restart the master after bypassing, and letting the problematic<a name="line.1058"></a>
-<span class="sourceLineNo">1059</span> * procedure to execute wth bypass=true, so in that condition, the procedure can be<a name="line.1059"></a>
-<span class="sourceLineNo">1060</span> * successfully bypassed.<a name="line.1060"></a>
-<span class="sourceLineNo">1061</span> * @param recursive We will do an expensive search for children of each pid. EXPENSIVE!<a name="line.1061"></a>
-<span class="sourceLineNo">1062</span> * @return true if bypass success<a name="line.1062"></a>
-<span class="sourceLineNo">1063</span> * @throws IOException IOException<a name="line.1063"></a>
-<span class="sourceLineNo">1064</span> */<a name="line.1064"></a>
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-<span class="sourceLineNo">1066</span> boolean recursive)<a name="line.1066"></a>
-<span class="sourceLineNo">1067</span> throws IOException {<a name="line.1067"></a>
-<span class="sourceLineNo">1068</span> List<Boolean> result = new ArrayList<Boolean>(pids.size());<a name="line.1068"></a>
-<span class="sourceLineNo">1069</span> for(long pid: pids) {<a name="line.1069"></a>
-<span class="sourceLineNo">1070</span> result.add(bypassProcedure(pid, lockWait, force, recursive));<a name="line.1070"></a>
-<span class="sourceLineNo">1071</span> }<a name="line.1071"></a>
-<span class="sourceLineNo">1072</span> return result;<a name="line.1072"></a>
-<span class="sourceLineNo">1073</span> }<a name="line.1073"></a>
-<span class="sourceLineNo">1074</span><a name="line.1074"></a>
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-<span class="sourceLineNo">1076</span> throws IOException {<a name="line.1076"></a>
-<span class="sourceLineNo">1077</span> Preconditions.checkArgument(lockWait > 0, "lockWait should be positive");<a name="line.1077"></a>
-<span class="sourceLineNo">1078</span> final Procedure<TEnvironment> procedure = getProcedure(pid);<a name="line.1078"></a>
-<span class="sourceLineNo">1079</span> if (procedure == null) {<a name="line.1079"></a>
-<span class="sourceLineNo">1080</span> LOG.debug("Procedure pid={} does not exist, skipping bypass", pid);<a name="line.1080"></a>
-<span class="sourceLineNo">1081</span> return false;<a name="line.1081"></a>
-<span class="sourceLineNo">1082</span> }<a name="line.1082"></a>
+<span class="sourceLineNo">1012</span> /**<a name="line.1012"></a>
+<span class="sourceLineNo">1013</span> * Bypass a procedure. If the procedure is set to bypass, all the logic in<a name="line.1013"></a>
+<span class="sourceLineNo">1014</span> * execute/rollback will be ignored and it will return success, whatever.<a name="line.1014"></a>
+<span class="sourceLineNo">1015</span> * It is used to recover buggy stuck procedures, releasing the lock resources<a name="line.1015"></a>
+<span class="sourceLineNo">1016</span> * and letting other procedures run. Bypassing one procedure (and its ancestors will<a name="line.1016"></a>
+<span class="sourceLineNo">1017</span> * be bypassed automatically) may leave the cluster in a middle state, e.g. region<a name="line.1017"></a>
+<span class="sourceLineNo">1018</span> * not assigned, or some hdfs files left behind. After getting rid of those stuck procedures,<a name="line.1018"></a>
+<span class="sourceLineNo">1019</span> * the operators may have to do some clean up on hdfs or schedule some assign procedures<a name="line.1019"></a>
+<span class="sourceLineNo">1020</span> * to let region online. DO AT YOUR OWN RISK.<a name="line.1020"></a>
+<span class="sourceLineNo">1021</span> * <p><a name="line.1021"></a>
+<span class="sourceLineNo">1022</span> * A procedure can be bypassed only if<a name="line.1022"></a>
+<span class="sourceLineNo">1023</span> * 1. The procedure is in state of RUNNABLE, WAITING, WAITING_TIMEOUT<a name="line.1023"></a>
+<span class="sourceLineNo">1024</span> * or it is a root procedure without any child.<a name="line.1024"></a>
+<span class="sourceLineNo">1025</span> * 2. No other worker thread is executing it<a name="line.1025"></a>
+<span class="sourceLineNo">1026</span> * 3. No child procedure has been submitted<a name="line.1026"></a>
+<span class="sourceLineNo">1027</span> *<a name="line.1027"></a>
+<span class="sourceLineNo">1028</span> * <p><a name="line.1028"></a>
+<span class="sourceLineNo">1029</span> * If all the requirements are meet, the procedure and its ancestors will be<a name="line.1029"></a>
+<span class="sourceLineNo">1030</span> * bypassed and persisted to WAL.<a name="line.1030"></a>
+<span class="sourceLineNo">1031</span> *<a name="line.1031"></a>
+<span class="sourceLineNo">1032</span> * <p><a name="line.1032"></a>
+<span class="sourceLineNo">1033</span> * If the procedure is in WAITING state, will set it to RUNNABLE add it to run queue.<a name="line.1033"></a>
+<span class="sourceLineNo">1034</span> * TODO: What about WAITING_TIMEOUT?<a name="line.1034"></a>
+<span class="sourceLineNo">1035</span> * @param pids the procedure id<a name="line.1035"></a>
+<span class="sourceLineNo">1036</span> * @param lockWait time to wait lock<a name="line.1036"></a>
+<span class="sourceLineNo">1037</span> * @param force if force set to true, we will bypass the procedure even if it is executing.<a name="line.1037"></a>
+<span class="sourceLineNo">1038</span> * This is for procedures which can't break out during executing(due to bug, mostly)<a name="line.1038"></a>
+<span class="sourceLineNo">1039</span> * In this case, bypassing the procedure is not enough, since it is already stuck<a name="line.1039"></a>
+<span class="sourceLineNo">1040</span> * there. We need to restart the master after bypassing, and letting the problematic<a name="line.1040"></a>
+<span class="sourceLineNo">1041</span> * procedure to execute wth bypass=true, so in that condition, the procedure can be<a name="line.1041"></a>
+<span class="sourceLineNo">1042</span> * successfully bypassed.<a name="line.1042"></a>
+<span class="sourceLineNo">1043</span> * @param recursive We will do an expensive search for children of each pid. EXPENSIVE!<a name="line.1043"></a>
+<span class="sourceLineNo">1044</span> * @return true if bypass success<a name="line.1044"></a>
+<span class="sourceLineNo">1045</span> * @throws IOException IOException<a name="line.1045"></a>
+<span class="sourceLineNo">1046</span> */<a name="line.1046"></a>
+<span class="sourceLineNo">1047</span> public List<Boolean> bypassProcedure(List<Long> pids, long lockWait, boolean force,<a name="line.1047"></a>
+<span class="sourceLineNo">1048</span> boolean recursive)<a name="line.1048"></a>
+<span class="sourceLineNo">1049</span> throws IOException {<a name="line.1049"></a>
+<span class="sourceLineNo">1050</span> List<Boolean> result = new ArrayList<Boolean>(pids.size());<a name="line.1050"></a>
+<span class="sourceLineNo">1051</span> for(long pid: pids) {<a name="line.1051"></a>
+<span class="sourceLineNo">1052</span> result.add(bypassProcedure(pid, lockWait, force, recursive));<a name="line.1052"></a>
+<span class="sourceLineNo">1053</span> }<a name="line.1053"></a>
+<span class="sourceLineNo">1054</span> return result;<a name="line.1054"></a>
+<span class="sourceLineNo">1055</span> }<a name="line.1055"></a>
+<span class="sourceLineNo">1056</span><a name="line.1056"></a>
+<span class="sourceLineNo">1057</span> boolean bypassProcedure(long pid, long lockWait, boolean override, boolean recursive)<a name="line.1057"></a>
+<span class="sourceLineNo">1058</span> throws IOException {<a name="line.1058"></a>
+<span class="sourceLineNo">1059</span> Preconditions.checkArgument(lockWait > 0, "lockWait should be positive");<a name="line.1059"></a>
+<span class="sourceLineNo">1060</span> final Procedure<TEnvironment> procedure = getProcedure(pid);<a name="line.1060"></a>
+<span class="sourceLineNo">1061</span> if (procedure == null) {<a name="line.1061"></a>
+<span class="sourceLineNo">1062</span> LOG.debug("Procedure pid={} does not exist, skipping bypass", pid);<a name="line.1062"></a>
+<span class="sourceLineNo">1063</span> return false;<a name="line.1063"></a>
+<span class="sourceLineNo">1064</span> }<a name="line.1064"></a>
+<span class="sourceLineNo">1065</span><a name="line.1065"></a>
+<span class="sourceLineNo">1066</span> LOG.debug("Begin bypass {} with lockWait={}, override={}, recursive={}",<a name="line.1066"></a>
+<span class="sourceLineNo">1067</span> procedure, lockWait, override, recursive);<a name="line.1067"></a>
+<span class="sourceLineNo">1068</span> IdLock.Entry lockEntry = procExecutionLock.tryLockEntry(procedure.getProcId(), lockWait);<a name="line.1068"></a>
+<span class="sourceLineNo">1069</span> if (lockEntry == null && !override) {<a name="line.1069"></a>
+<span class="sourceLineNo">1070</span> LOG.debug("Waited {} ms, but {} is still running, skipping bypass with force={}",<a name="line.1070"></a>
+<span class="sourceLineNo">1071</span> lockWait, procedure, override);<a name="line.1071"></a>
+<span class="sourceLineNo">1072</span> return false;<a name="line.1072"></a>
+<span class="sourceLineNo">1073</span> } else if (lockEntry == null) {<a name="line.1073"></a>
+<span class="sourceLineNo">1074</span> LOG.debug("Waited {} ms, but {} is still running, begin bypass with force={}",<a name="line.1074"></a>
+<span class="sourceLineNo">1075</span> lockWait, procedure, override);<a name="line.1075"></a>
+<span class="sourceLineNo">1076</span> }<a name="line.1076"></a>
+<span class="sourceLineNo">1077</span> try {<a name="line.1077"></a>
+<span class="sourceLineNo">1078</span> // check whether the procedure is already finished<a name="line.1078"></a>
+<span class="sourceLineNo">1079</span> if (procedure.isFinished()) {<a name="line.1079"></a>
+<span class="sourceLineNo">1080</span> LOG.debug("{} is already finished, skipping bypass", procedure);<a name="line.1080"></a>
+<span class="sourceLineNo">1081</span> return false;<a name="line.1081"></a>
+<span class="sourceLineNo">1082</span> }<a name="line.1082"></a>
<span class="sourceLineNo">1083</span><a name="line.1083"></a>
-<span class="sourceLineNo">1084</span> LOG.debug("Begin bypass {} with lockWait={}, override={}, recursive={}",<a name="line.1084"></a>
-<span class="sourceLineNo">1085</span> procedure, lockWait, override, recursive);<a name="line.1085"></a>
-<span class="sourceLineNo">1086</span> IdLock.Entry lockEntry = procExecutionLock.tryLockEntry(procedure.getProcId(), lockWait);<a name="line.1086"></a>
-<span class="sourceLineNo">1087</span> if (lockEntry == null && !override) {<a name="line.1087"></a>
-<span class="sourceLineNo">1088</span> LOG.debug("Waited {} ms, but {} is still running, skipping bypass with force={}",<a name="line.1088"></a>
-<span class="sourceLineNo">1089</span> lockWait, procedure, override);<a name="line.1089"></a>
-<span class="sourceLineNo">1090</span> return false;<a name="line.1090"></a>
-<span class="sourceLineNo">1091</span> } else if (lockEntry == null) {<a name="line.1091"></a>
-<span class="sourceLineNo">1092</span> LOG.debug("Waited {} ms, but {} is still running, begin bypass with force={}",<a name="line.1092"></a>
-<span class="sourceLineNo">1093</span> lockWait, procedure, override);<a name="line.1093"></a>
-<span class="sourceLineNo">1094</span> }<a name="line.1094"></a>
-<span class="sourceLineNo">1095</span> try {<a name="line.1095"></a>
-<span class="sourceLineNo">1096</span> // check whether the procedure is already finished<a name="line.1096"></a>
-<span class="sourceLineNo">1097</span> if (procedure.isFinished()) {<a name="line.1097"></a>
-<span class="sourceLineNo">1098</span> LOG.debug("{} is already finished, skipping bypass", procedure);<a name="line.1098"></a>
-<span class="sourceLineNo">1099</span> return false;<a name="line.1099"></a>
-<span class="sourceLineNo">1100</span> }<a name="line.1100"></a>
-<span class="sourceLineNo">1101</span><a name="line.1101"></a>
-<span class="sourceLineNo">1102</span> if (procedure.hasChildren()) {<a name="line.1102"></a>
-<span class="sourceLineNo">1103</span> if (recursive) {<a name="line.1103"></a>
-<span class="sourceLineNo">1104</span> // EXPENSIVE. Checks each live procedure of which there could be many!!!<a name="line.1104"></a>
-<span class="sourceLineNo">1105</span> // Is there another way to get children of a procedure?<a name="line.1105"></a>
-<span class="sourceLineNo">1106</span> LOG.info("Recursive bypass on children of pid={}", procedure.getProcId());<a name="line.1106"></a>
-<span class="sourceLineNo">1107</span> this.procedures.forEachValue(1 /*Single-threaded*/,<a name="line.1107"></a>
-<span class="sourceLineNo">1108</span> // Transformer<a name=
<TRUNCATED>