[jira] [Created] (TEZ-3337) Not log empty fields of TaskAttemptFinishedEvent to avoid confusion

["Zhiyuan Yang (JIRA)" <ji...@apache.org>]

Zhiyuan Yang created TEZ-3337:
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             Summary: Not log empty fields of TaskAttemptFinishedEvent to avoid confusion
                 Key: TEZ-3337
                 URL: https://issues.apache.org/jira/browse/TEZ-3337
             Project: Apache Tez
          Issue Type: Bug
            Reporter: Zhiyuan Yang
            Assignee: Zhiyuan Yang


For successful task attempt, we don't record the containerId, which cause "containerId=," in the INFO logs. We should avoid logging this field if it's empty.

{code}
2016-07-07 22:49:44,935 [INFO] [Dispatcher thread {Central}] |history.HistoryEventHandler|: [HISTORY][DAG:dag_1467855578616_0044_1][Event:TASK_ATTEMPT_FINISHED]: vertexName=Map 1, taskAttemptId=attempt_1467855578616_0044_1_07_000000_0, creationTime=1467956979891, allocationTime=1467956980426, startTime=1467956982433, finishTime=1467956984933, timeTaken=2500, status=SUCCEEDED, errorEnum=, diagnostics=, containerId=, nodeId=, nodeHttpAddress=
2016-07-07 22:49:44,937 [INFO] [Dispatcher thread {Central}] |history.HistoryEventHandler|: [HISTORY][DAG:dag_1467855578616_0044_1][Event:TASK_ATTEMPT_FINISHED]: vertexName=Map 11, taskAttemptId=attempt_1467855578616_0044_1_02_000000_0, creationTime=1467956979894, allocationTime=1467956980427, startTime=1467956982437, finishTime=1467956984936, timeTaken=2499, status=SUCCEEDED, errorEnum=, diagnostics=, containerId=, nodeId=, nodeHttpAddress=
{code}



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