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<h1 title="Package" class="title">Package&nbsp;org.apache.hadoop.hbase.procedure2</h1>
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<table class="typeSummary" border="0" cellpadding="3" cellspacing="0" summary="Interface Summary table, listing interfaces, and an explanation">
<caption><span>Interface Summary</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Interface</th>
<th class="colLast" scope="col">Description</th>
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<tbody>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/LockStatus.html" title="interface in org.apache.hadoop.hbase.procedure2">LockStatus</a></td>
<td class="colLast">
<div class="block">Interface to get status of a Lock without getting access to acquire/release lock.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureExecutor.ProcedureExecutorListener.html" title="interface in org.apache.hadoop.hbase.procedure2">ProcedureExecutor.ProcedureExecutorListener</a></td>
<td class="colLast">&nbsp;</td>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureMetrics.html" title="interface in org.apache.hadoop.hbase.procedure2">ProcedureMetrics</a></td>
<td class="colLast">
<div class="block">With this interface, the procedure framework provides means to collect following set of metrics
per procedure type for all procedures:
Count of submitted procedure instances
Time histogram for successfully completed procedure instances
Count of failed procedure instances
Please implement this interface to return appropriate metrics.</div>
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<tr class="rowColor">
<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureScheduler.html" title="interface in org.apache.hadoop.hbase.procedure2">ProcedureScheduler</a></td>
<td class="colLast">
<div class="block">Keep track of the runnable procedures</div>
</td>
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<tr class="altColor">
<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureStateSerializer.html" title="interface in org.apache.hadoop.hbase.procedure2">ProcedureStateSerializer</a></td>
<td class="colLast">&nbsp;</td>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/RemoteProcedureDispatcher.RemoteNode.html" title="interface in org.apache.hadoop.hbase.procedure2">RemoteProcedureDispatcher.RemoteNode</a>&lt;TEnv,TRemote&gt;</td>
<td class="colLast">
<div class="block">Account of what procedures are running on remote node.</div>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/RemoteProcedureDispatcher.RemoteProcedure.html" title="interface in org.apache.hadoop.hbase.procedure2">RemoteProcedureDispatcher.RemoteProcedure</a>&lt;TEnv,TRemote&gt;</td>
<td class="colLast">
<div class="block">Remote procedure reference.</div>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/RSProcedureCallable.html" title="interface in org.apache.hadoop.hbase.procedure2">RSProcedureCallable</a></td>
<td class="colLast">
<div class="block">A general interface for a sub procedure runs at RS side.</div>
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<table class="typeSummary" border="0" cellpadding="3" cellspacing="0" summary="Class Summary table, listing classes, and an explanation">
<caption><span>Class Summary</span><span class="tabEnd">&nbsp;</span></caption>
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<th class="colFirst" scope="col">Class</th>
<th class="colLast" scope="col">Description</th>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/AbstractProcedureScheduler.html" title="class in org.apache.hadoop.hbase.procedure2">AbstractProcedureScheduler</a></td>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/BaseRSProcedureCallable.html" title="class in org.apache.hadoop.hbase.procedure2">BaseRSProcedureCallable</a></td>
<td class="colLast">&nbsp;</td>
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<tr class="altColor">
<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/CompletedProcedureCleaner.html" title="class in org.apache.hadoop.hbase.procedure2">CompletedProcedureCleaner</a>&lt;TEnvironment&gt;</td>
<td class="colLast">
<div class="block">Internal cleaner that removes the completed procedure results after a TTL.</div>
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<tr class="rowColor">
<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/CompletedProcedureRetainer.html" title="class in org.apache.hadoop.hbase.procedure2">CompletedProcedureRetainer</a>&lt;TEnvironment&gt;</td>
<td class="colLast">
<div class="block">Hold the reference to a completed root procedure.</div>
</td>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/DelayedProcedure.html" title="class in org.apache.hadoop.hbase.procedure2">DelayedProcedure</a>&lt;TEnvironment&gt;</td>
<td class="colLast">
<div class="block">Vessel that carries a Procedure and a timeout.</div>
</td>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/FailedProcedure.html" title="class in org.apache.hadoop.hbase.procedure2">FailedProcedure</a>&lt;TEnvironment&gt;</td>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/InlineChore.html" title="class in org.apache.hadoop.hbase.procedure2">InlineChore</a></td>
<td class="colLast">
<div class="block">Inline Chores (executors internal chores).</div>
</td>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/LockAndQueue.html" title="class in org.apache.hadoop.hbase.procedure2">LockAndQueue</a></td>
<td class="colLast">
<div class="block">Locking for mutual exclusion between procedures.</div>
</td>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/LockedResource.html" title="class in org.apache.hadoop.hbase.procedure2">LockedResource</a></td>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/OnePhaseProcedure.html" title="class in org.apache.hadoop.hbase.procedure2">OnePhaseProcedure</a>&lt;TEnvironment&gt;</td>
<td class="colLast">&nbsp;</td>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html" title="class in org.apache.hadoop.hbase.procedure2">Procedure</a>&lt;TEnvironment&gt;</td>
<td class="colLast">
<div class="block">Base Procedure class responsible for Procedure Metadata; e.g.</div>
</td>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureDeque.html" title="class in org.apache.hadoop.hbase.procedure2">ProcedureDeque</a></td>
<td class="colLast">
<div class="block">Type class.</div>
</td>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureEvent.html" title="class in org.apache.hadoop.hbase.procedure2">ProcedureEvent</a>&lt;T&gt;</td>
<td class="colLast">
<div class="block">Basic ProcedureEvent that contains an "object", which can be a description or a reference to the
resource to wait on, and a queue for suspended procedures.</div>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureExecutor.html" title="class in org.apache.hadoop.hbase.procedure2">ProcedureExecutor</a>&lt;TEnvironment&gt;</td>
<td class="colLast">
<div class="block">Thread Pool that executes the submitted procedures.</div>
</td>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureExecutor.Testing.html" title="class in org.apache.hadoop.hbase.procedure2">ProcedureExecutor.Testing</a></td>
<td class="colLast">
<div class="block">Class with parameters describing how to fail/die when in testing-context.</div>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureInMemoryChore.html" title="class in org.apache.hadoop.hbase.procedure2">ProcedureInMemoryChore</a>&lt;TEnvironment&gt;</td>
<td class="colLast">
<div class="block">Special procedure used as a chore.</div>
</td>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureUtil.html" title="class in org.apache.hadoop.hbase.procedure2">ProcedureUtil</a></td>
<td class="colLast">
<div class="block">Helper to convert to/from ProcedureProtos</div>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureUtil.CompatStateSerializer.html" title="class in org.apache.hadoop.hbase.procedure2">ProcedureUtil.CompatStateSerializer</a></td>
<td class="colLast">
<div class="block">A serializer (deserializer) for those Procedures which were serialized
before this patch.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureUtil.StateSerializer.html" title="class in org.apache.hadoop.hbase.procedure2">ProcedureUtil.StateSerializer</a></td>
<td class="colLast">
<div class="block">A serializer for our Procedures.</div>
</td>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/RemoteProcedureDispatcher.html" title="class in org.apache.hadoop.hbase.procedure2">RemoteProcedureDispatcher</a>&lt;TEnv,TRemote extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Comparable.html?is-external=true" title="class or interface in java.lang">Comparable</a>&lt;TRemote&gt;&gt;</td>
<td class="colLast">
<div class="block">A procedure dispatcher that aggregates and sends after elapsed time or after we hit
count threshold.</div>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/RemoteProcedureDispatcher.DelayedTask.html" title="class in org.apache.hadoop.hbase.procedure2">RemoteProcedureDispatcher.DelayedTask</a></td>
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<div class="block">Delayed object that holds a FutureTask.</div>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/RemoteProcedureDispatcher.RemoteOperation.html" title="class in org.apache.hadoop.hbase.procedure2">RemoteProcedureDispatcher.RemoteOperation</a></td>
<td class="colLast">
<div class="block">Data structure with reference to remote operation.</div>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/RootProcedureState.html" title="class in org.apache.hadoop.hbase.procedure2">RootProcedureState</a>&lt;TEnvironment&gt;</td>
<td class="colLast">
<div class="block">Internal state of the ProcedureExecutor that describes the state of a "Root Procedure".</div>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/SequentialProcedure.html" title="class in org.apache.hadoop.hbase.procedure2">SequentialProcedure</a>&lt;TEnvironment&gt;</td>
<td class="colLast">
<div class="block">A SequentialProcedure describes one step in a procedure chain:</div>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/SimpleProcedureScheduler.html" title="class in org.apache.hadoop.hbase.procedure2">SimpleProcedureScheduler</a></td>
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<div class="block">Simple scheduler for procedures</div>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/StateMachineProcedure.html" title="class in org.apache.hadoop.hbase.procedure2">StateMachineProcedure</a>&lt;TEnvironment,TState&gt;</td>
<td class="colLast">
<div class="block">Procedure described by a series of steps.</div>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/StoppableThread.html" title="class in org.apache.hadoop.hbase.procedure2">StoppableThread</a></td>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/TimeoutExecutorThread.html" title="class in org.apache.hadoop.hbase.procedure2">TimeoutExecutorThread</a>&lt;TEnvironment&gt;</td>
<td class="colLast">
<div class="block">Runs task on a period such as check for stuck workers.</div>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/TwoPhaseProcedure.html" title="class in org.apache.hadoop.hbase.procedure2">TwoPhaseProcedure</a>&lt;TEnvironment&gt;</td>
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<caption><span>Enum Summary</span><span class="tabEnd">&nbsp;</span></caption>
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<th class="colFirst" scope="col">Enum</th>
<th class="colLast" scope="col">Description</th>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/LockedResourceType.html" title="enum in org.apache.hadoop.hbase.procedure2">LockedResourceType</a></td>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/LockType.html" title="enum in org.apache.hadoop.hbase.procedure2">LockType</a></td>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.LockState.html" title="enum in org.apache.hadoop.hbase.procedure2">Procedure.LockState</a></td>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/RootProcedureState.State.html" title="enum in org.apache.hadoop.hbase.procedure2">RootProcedureState.State</a></td>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/StateMachineProcedure.Flow.html" title="enum in org.apache.hadoop.hbase.procedure2">StateMachineProcedure.Flow</a></td>
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<table class="typeSummary" border="0" cellpadding="3" cellspacing="0" summary="Exception Summary table, listing exceptions, and an explanation">
<caption><span>Exception Summary</span><span class="tabEnd">&nbsp;</span></caption>
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<th class="colFirst" scope="col">Exception</th>
<th class="colLast" scope="col">Description</th>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/BadProcedureException.html" title="class in org.apache.hadoop.hbase.procedure2">BadProcedureException</a></td>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/FailedRemoteDispatchException.html" title="class in org.apache.hadoop.hbase.procedure2">FailedRemoteDispatchException</a></td>
<td class="colLast">
<div class="block">Used internally signaling failed queue of a remote procedure
operation.</div>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/NoNodeDispatchException.html" title="class in org.apache.hadoop.hbase.procedure2">NoNodeDispatchException</a></td>
<td class="colLast">
<div class="block">Used internally signaling failed queue of a remote procedure operation.</div>
</td>
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<tr class="rowColor">
<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/NoServerDispatchException.html" title="class in org.apache.hadoop.hbase.procedure2">NoServerDispatchException</a></td>
<td class="colLast">
<div class="block">Used internally signaling failed queue of a remote procedure operation.</div>
</td>
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<tr class="altColor">
<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/NullTargetServerDispatchException.html" title="class in org.apache.hadoop.hbase.procedure2">NullTargetServerDispatchException</a></td>
<td class="colLast">
<div class="block">Used internally signaling failed queue of a remote procedure operation.</div>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureAbortedException.html" title="class in org.apache.hadoop.hbase.procedure2">ProcedureAbortedException</a></td>
<td class="colLast">
<div class="block">Thrown when a procedure is aborted</div>
</td>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureException.html" title="class in org.apache.hadoop.hbase.procedure2">ProcedureException</a></td>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureSuspendedException.html" title="class in org.apache.hadoop.hbase.procedure2">ProcedureSuspendedException</a></td>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureYieldException.html" title="class in org.apache.hadoop.hbase.procedure2">ProcedureYieldException</a></td>
<td class="colLast">
<div class="block">Indicate that a procedure wants to be rescheduled.</div>
</td>
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<td class="colFirst"><a href="../../../../../org/apache/hadoop/hbase/procedure2/RemoteProcedureException.html" title="class in org.apache.hadoop.hbase.procedure2">RemoteProcedureException</a></td>
<td class="colLast">
<div class="block">A RemoteProcedureException is an exception from another thread or process.</div>
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