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https://issues.apache.org/jira/browse/MAPREDUCE-7353?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17368812#comment-17368812
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Bilwa S T commented on MAPREDUCE-7353:
--------------------------------------
Thanks [~epayne] for your review. I have added UT . Please take a look
> Mapreduce job fails when NM is stopped
> --------------------------------------
>
> Key: MAPREDUCE-7353
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-7353
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Reporter: Bilwa S T
> Assignee: Bilwa S T
> Priority: Major
> Attachments: MAPREDUCE-7353.001.patch, MAPREDUCE-7353.002.patch
>
>
> Job fails as task fail due to too many fetch failures
> {code:java}
> Line 48048: 2021-06-02 16:25:02,002 | INFO | ContainerLauncher #6 |
> Processing the event EventType: CONTAINER_REMOTE_CLEANUP for container
> container_e03_1622107691213_1054_01_000005 taskAttempt
> attempt_1622107691213_1054_m_000000_0 | ContainerLauncherImpl.java:394
> Line 48053: 2021-06-02 16:25:02,002 | INFO | ContainerLauncher #6 |
> KILLING attempt_1622107691213_1054_m_000000_0 | ContainerLauncherImpl.java:209
> Line 58026: 2021-06-02 16:26:34,034 | INFO | AsyncDispatcher event
> handler | TaskAttempt killed because it ran on unusable node
> node-group-1ZYEq0002:26009. AttemptId:attempt_1622107691213_1054_m_000000_0 |
> JobImpl.java:1401
> Line 58030: 2021-06-02 16:26:34,034 | DEBUG | AsyncDispatcher event
> handler | Processing attempt_1622107691213_1054_m_000000_0 of type TA_KILL |
> TaskAttemptImpl.java:1390
> Line 58035: 2021-06-02 16:26:34,034 | INFO | RMCommunicator Allocator
> | Killing taskAttempt:attempt_1622107691213_1054_m_000000_0 because it is
> running on unusable node:node-group-1ZYEq0002:26009 |
> RMContainerAllocator.java:1066
> Line 58043: 2021-06-02 16:26:34,034 | DEBUG | AsyncDispatcher event
> handler | Processing attempt_1622107691213_1054_m_000000_0 of type TA_KILL |
> TaskAttemptImpl.java:1390
> Line 58054: 2021-06-02 16:26:34,034 | DEBUG | AsyncDispatcher event
> handler | Processing attempt_1622107691213_1054_m_000000_0 of type
> TA_DIAGNOSTICS_UPDATE | TaskAttemptImpl.java:1390
> Line 58055: 2021-06-02 16:26:34,034 | INFO | AsyncDispatcher event
> handler | Diagnostics report from attempt_1622107691213_1054_m_000000_0:
> Container released on a *lost* node | TaskAttemptImpl.java:2649
> Line 58057: 2021-06-02 16:26:34,034 | DEBUG | AsyncDispatcher event
> handler | Processing attempt_1622107691213_1054_m_000000_0 of type TA_KILL |
> TaskAttemptImpl.java:1390
> Line 60317: 2021-06-02 16:26:57,057 | INFO | AsyncDispatcher event
> handler | Too many fetch-failures for output of task attempt:
> attempt_1622107691213_1054_m_000000_0 ... raising fetch failure to map |
> JobImpl.java:2005
> Line 60319: 2021-06-02 16:26:57,057 | DEBUG | AsyncDispatcher event
> handler | Processing attempt_1622107691213_1054_m_000000_0 of type
> TA_TOO_MANY_FETCH_FAILURE | TaskAttemptImpl.java:1390
> Line 60320: 2021-06-02 16:26:57,057 | INFO | AsyncDispatcher event
> handler | attempt_1622107691213_1054_m_000000_0 transitioned from state
> SUCCESS_CONTAINER_CLEANUP to FAILED, event type is TA_TOO_MANY_FETCH_FAILURE
> and nodeId=node-group-1ZYEq0002:26009 | TaskAttemptImpl.java:1411
> Line 69487: 2021-06-02 16:30:02,002 | DEBUG | AsyncDispatcher event
> handler | Processing attempt_1622107691213_1054_m_000000_0 of type
> TA_DIAGNOSTICS_UPDATE | TaskAttemptImpl.java:1390
> Line 69527: 2021-06-02 16:30:02,002 | INFO | AsyncDispatcher event
> handler | Diagnostics report from attempt_1622107691213_1054_m_000000_0:
> cleanup failed for container container_e03_1622107691213_1054_01_000005 :
> java.net.ConnectException: Call From node-group-1ZYEq0001/192.168.0.66 to
> node-group-1ZYEq0002:26009 failed on connection exception:
> java.net.ConnectException: Connection refused; For more details see:
> http://wiki.apache.org/hadoop/ConnectionRefused
> Line 69607: 2021-06-02 16:30:02,002 | DEBUG | AsyncDispatcher event
> handler | Processing attempt_1622107691213_1054_m_000000_0 of type
> TA_CONTAINER_CLEANED | TaskAttemptImpl.java:1390
> Line 69609: 2021-06-02 16:30:02,002 | DEBUG | AsyncDispatcher event
> handler | Processing attempt_1622107691213_1054_m_000000_0 of type
> TA_CONTAINER_CLEANED | TaskAttemptImpl.java:1390
> Line 73645: 2021-06-02 16:23:56,056 | DEBUG | fetcher#9 | Fetcher 9
> going to fetch from node-group-1ZYEq0002:26008 for:
> [attempt_1622107691213_1054_m_000000_0] | Fetcher.java:318
> Line 73646: 2021-06-02 16:23:56,056 | DEBUG | fetcher#9 | MapOutput URL
> for node-group-1ZYEq0002:26008 ->
> http://node-group-1ZYEq0002:26008/mapOutput?job=job_1622107691213_1054&reduce=4&map=attempt_1622107691213_1054_m_000000_0
> | Fetcher.java:686
> Line 74093: 2021-06-02 16:26:56,056 | INFO | fetcher#9 | Reporting
> fetch failure for attempt_1622107691213_1054_m_000000_0 to MRAppMaster. |
> ShuffleSchedulerImpl.java:349
> {code}
> As we can see from logs that RM reported AM about node update at 16:26:34 but
> event was skipped as KILL event is ignored when TaskAttemptImpl is in
> SUCCESS_CONTAINER_CLEANUP state. So next we receive TA_TOO_MANY_FETCH_FAILURE
> event which will lead to task fail.
>
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