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  1. Hadoop YARN
  2. YARN-431 [Umbrella] Complete/Stabilize YARN application log-handling
  3. YARN-2024

IOException in AppLogAggregatorImpl does not give stacktrace and leaves aggregated TFile in a bad state.

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    Details

    • Type: Sub-task
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: 0.23.10, 2.4.0
    • Fix Version/s: None
    • Component/s: log-aggregation
    • Labels:
      None
    • Target Version/s:

      Description

      Multiple issues were encountered when AppLogAggregatorImpl encountered an IOException in AppLogAggregatorImpl#uploadLogsForContainer while aggregating yarn-logs for an application that had very large (>150G each) error logs.

      • An IOException was encountered during the LogWriter#append call, and a message was printed, but no stacktrace was provided. Message: "ERROR: Couldn't upload logs for container_nnnnnnnnnnnnn_nnnnnnn_nn_nnnnnn. Skipping this container."
      • After the IOExceptin, the TFile is in a bad state, so subsequent calls to LogWriter#append fail with the following stacktrace:
        2014-04-16 13:29:09,772 LogAggregationService #17907 ERROR org.apache.hadoop.yarn.YarnUncaughtExceptionHandler: Thread ThreadLogAggregationService #17907,5,main threw an Exception.
        java.lang.IllegalStateException: Incorrect state to start a new key: IN_VALUE
        at org.apache.hadoop.io.file.tfile.TFile$Writer.prepareAppendKey(TFile.java:528)
        at org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat.java:262)
        at org.apache.hadoop.yarn.server.nodemanager.containermanager.logaggregation.AppLogAggregatorImpl.uploadLogsForContainer(AppLogAggregatorImpl.java:128)
        at org.apache.hadoop.yarn.server.nodemanager.containermanager.logaggregation.AppLogAggregatorImpl.doAppLogAggregation(AppLogAggregatorImpl.java:164)
        ...
      • At this point, the yarn-logs cleaner still thinks the thread is aggregating, so the huge yarn-logs never get cleaned up for that application.

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            • Assignee:
              xgong Xuan Gong
              Reporter:
              epayne Eric Payne
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              Dates

              • Created:
                Updated: