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https://issues.apache.org/jira/browse/MAPREDUCE-3656?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Vinod Kumar Vavilapalli updated MAPREDUCE-3656:
-----------------------------------------------
Status: Open (was: Patch Available)
Looks good overall. A couple of minor comments:
- The comment saying "Timing can cause this to happen [..]" needs to be
updated/removed
- For handling the case where JVM is unregistered before it gets a task, we
should remove it from {{launchedJVMs}} during unregister. Once we do this, we
should think about synchronization issues carefully.
- In getTask(), why do we need both the checks
{{jvmIDToActiveAttemptMap.containsKey(wJvmID)}} and
{{jvmIDToActiveAttemptMap.get(wJvmID) == null}}
- We went through a couple of iterations on this part of the code, so let us
make sure things are fine by running the AMScalability benchmark (100K maps)
once.
> Sort job on 350 scale is consistently failing with latest MRV2 code
> --------------------------------------------------------------------
>
> Key: MAPREDUCE-3656
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3656
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: applicationmaster, mrv2, resourcemanager
> Affects Versions: 0.23.1
> Reporter: Karam Singh
> Assignee: Siddharth Seth
> Priority: Blocker
> Fix For: 0.23.1
>
> Attachments: MR3656.txt
>
>
> With the code checked out on last two days.
> Sort Job on 350 node scale with 16800 maps and 680 reduces consistently
> failing for around last 6 runs
> When around 50% of maps are completed, suddenly job jumps to failed state.
> On looking at NM log, found RM sent Stop Container Request to NM for AM
> container.
> But at INFO level from RM log not able find why RM is killing AM when job is
> not killed manually.
> One thing found common on failed AM logs is -:
> org.apache.hadoop.yarn.state.InvalidStateTransitonException
> With with different.
> For e.g. One log says -:
> {code}
> org.apache.hadoop.yarn.state.InvalidStateTransitonException: Invalid event:
> TA_UPDATE at ASSIGNED
> {code}
> Whereas other logs says -:
> {code}
> org.apache.hadoop.yarn.state.InvalidStateTransitonException: Invalid event:
> JOB_COUNTER_UPDATE at ERROR
> {code}
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