[ 
https://issues.apache.org/jira/browse/MAPREDUCE-7479?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

John Doe updated MAPREDUCE-7479:
--------------------------------
    Description: 
`TA_DIAGNOSTICS_UPDATE` can arrive at an unassigned task attempt before 
`TA_KILL` sent by RecoveryService, which causes an invalid state transition.
{code:java}
2024-03-09 16:56:05,734 ERROR 
[org.apache.hadoop.mapreduce.v2.app.job.impl.TaskAttemptImpl] - Can't handle 
this event at current state for attempt_0_0000_m_000000_0
org.apache.hadoop.yarn.state.InvalidStateTransitonException: Invalid event: 
TA_DIAGNOSTICS_UPDATE at UNASSIGNED
    at 
org.apache.hadoop.yarn.state.StateMachineFactory.doTransition(StateMachineFactory.java:301)
    at 
org.apache.hadoop.yarn.state.StateMachineFactory.access$300(StateMachineFactory.java:43)
    at 
org.apache.hadoop.yarn.state.StateMachineFactory$InternalStateMachine.doTransition(StateMachineFactory.java:443)
    at 
org.apache.hadoop.mapreduce.v2.app.job.impl.TaskAttemptImpl.handle(TaskAttemptImpl.java:941)
    at 
org.apache.hadoop.mapreduce.v2.app.job.impl.TaskAttemptImpl.handle(TaskAttemptImpl.java:133)
    at 
org.apache.hadoop.mapreduce.v2.app.MRAppMaster$TaskAttemptEventDispatcher.handle(MRAppMaster.java:912)
    at 
org.apache.hadoop.mapreduce.v2.app.MRAppMaster$TaskAttemptEventDispatcher.handle(MRAppMaster.java:904)
    at 
org.apache.hadoop.yarn.event.AsyncDispatcher.dispatch(AsyncDispatcher.java:125)
    at 
org.apache.hadoop.yarn.event.AsyncDispatcher$1.run(AsyncDispatcher.java:74)
    at java.lang.Thread.run(Thread.java:750)
2024-03-09 16:56:05,737 INFO 
[org.apache.hadoop.mapreduce.v2.app.job.impl.TaskAttemptImpl] - 
attempt_0_0000_m_000000_0 TaskAttempt Transitioned from UNASSIGNED to KILLED

{code}

  was:`TA_DIAGNOSTICS_UPDATE` can arrive at an unassigned task attempt before 
`TA_KILL` sent by RecoveryService, which causes an invalid state transition.


> Send kill event to recovered attempt in unassigned state
> --------------------------------------------------------
>
>                 Key: MAPREDUCE-7479
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-7479
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 2.0.0-alpha
>            Reporter: John Doe
>            Priority: Major
>             Fix For: 2.0.0-alpha
>
>
> `TA_DIAGNOSTICS_UPDATE` can arrive at an unassigned task attempt before 
> `TA_KILL` sent by RecoveryService, which causes an invalid state transition.
> {code:java}
> 2024-03-09 16:56:05,734 ERROR 
> [org.apache.hadoop.mapreduce.v2.app.job.impl.TaskAttemptImpl] - Can't handle 
> this event at current state for attempt_0_0000_m_000000_0
> org.apache.hadoop.yarn.state.InvalidStateTransitonException: Invalid event: 
> TA_DIAGNOSTICS_UPDATE at UNASSIGNED
>     at 
> org.apache.hadoop.yarn.state.StateMachineFactory.doTransition(StateMachineFactory.java:301)
>     at 
> org.apache.hadoop.yarn.state.StateMachineFactory.access$300(StateMachineFactory.java:43)
>     at 
> org.apache.hadoop.yarn.state.StateMachineFactory$InternalStateMachine.doTransition(StateMachineFactory.java:443)
>     at 
> org.apache.hadoop.mapreduce.v2.app.job.impl.TaskAttemptImpl.handle(TaskAttemptImpl.java:941)
>     at 
> org.apache.hadoop.mapreduce.v2.app.job.impl.TaskAttemptImpl.handle(TaskAttemptImpl.java:133)
>     at 
> org.apache.hadoop.mapreduce.v2.app.MRAppMaster$TaskAttemptEventDispatcher.handle(MRAppMaster.java:912)
>     at 
> org.apache.hadoop.mapreduce.v2.app.MRAppMaster$TaskAttemptEventDispatcher.handle(MRAppMaster.java:904)
>     at 
> org.apache.hadoop.yarn.event.AsyncDispatcher.dispatch(AsyncDispatcher.java:125)
>     at 
> org.apache.hadoop.yarn.event.AsyncDispatcher$1.run(AsyncDispatcher.java:74)
>     at java.lang.Thread.run(Thread.java:750)
> 2024-03-09 16:56:05,737 INFO 
> [org.apache.hadoop.mapreduce.v2.app.job.impl.TaskAttemptImpl] - 
> attempt_0_0000_m_000000_0 TaskAttempt Transitioned from UNASSIGNED to KILLED
> {code}



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