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  1. Hadoop YARN
  2. YARN-2251

Avoid negative elapsed time in JHS/MRAM web UI and services

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Details

    • Bug
    • Status: Closed
    • Major
    • Resolution: Fixed
    • None
    • 2.6.0
    • None
    • None
    • Reviewed

    Description

      Recently we observed a rare bug that an elapsed time of a reducer is going to be negative on JHS web UI and via REST APIs. While the real reason for this bug seems to be clock asynchronization on different hosts, the web frontend should have masked the negative values. However, in the current code, org.apache.hadoop.mapreduce.v2.app.webapp.dao.* only check whether the elapsed time is -1 or not.

      Attachments

        1. MAPREDUCE-5940.1.patch
          5 kB
          Zhijie Shen
        2. MAPREDUCE-5940.2.patch
          3 kB
          Zhijie Shen

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            zjshen Zhijie Shen
            zjshen Zhijie Shen
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