org.apache.hadoop.mapreduce.v2.app.job.impl
Class JobImpl.InitTransition

java.lang.Object
  org.apache.hadoop.mapreduce.v2.app.job.impl.JobImpl.InitTransition

All Implemented Interfaces:

org.apache.hadoop.yarn.state.MultipleArcTransition<JobImpl,JobEvent,org.apache.hadoop.mapreduce.v2.api.records.JobState>

Enclosing class:

JobImpl

public static class JobImpl.InitTransition
extends Object
implements org.apache.hadoop.yarn.state.MultipleArcTransition<JobImpl,JobEvent,org.apache.hadoop.mapreduce.v2.api.records.JobState>

Constructor Summary

JobImpl.InitTransition()

Method Summary

protected org.apache.hadoop.mapreduce.split.JobSplit.TaskSplitMetaInfo[]	createSplits(JobImpl job, org.apache.hadoop.mapreduce.v2.api.records.JobId jobId)
protected void	setup(JobImpl job)
org.apache.hadoop.mapreduce.v2.api.records.JobState	transition(JobImpl job, JobEvent event) Note that this transition method is called directly (and synchronously) by MRAppMaster's init() method (i.e., no RPC, no thread-switching; just plain sequential call within AM context), so we can trigger modifications in AM state from here (at least, if AM is written that way; MR version is).

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

JobImpl.InitTransition

public JobImpl.InitTransition()

Method Detail

transition

public org.apache.hadoop.mapreduce.v2.api.records.JobState transition(JobImpl job,
                                                                      JobEvent event)

Note that this transition method is called directly (and synchronously) by MRAppMaster's init() method (i.e., no RPC, no thread-switching; just plain sequential call within AM context), so we can trigger modifications in AM state from here (at least, if AM is written that way; MR version is).

Specified by:

transition in interface org.apache.hadoop.yarn.state.MultipleArcTransition<JobImpl,JobEvent,org.apache.hadoop.mapreduce.v2.api.records.JobState>

setup

protected void setup(JobImpl job)
              throws IOException

Throws:

IOException

createSplits

protected org.apache.hadoop.mapreduce.split.JobSplit.TaskSplitMetaInfo[] createSplits(JobImpl job,
                                                                                      org.apache.hadoop.mapreduce.v2.api.records.JobId jobId)