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Posted to issues-all@impala.apache.org by "bharath v (JIRA)" <ji...@apache.org> on 2018/08/09 06:28:00 UTC

[jira] [Created] (IMPALA-7416) Expose pause monitor metrics

bharath v created IMPALA-7416:
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             Summary: Expose pause monitor metrics
                 Key: IMPALA-7416
                 URL: https://issues.apache.org/jira/browse/IMPALA-7416
             Project: IMPALA
          Issue Type: Improvement
          Components: Backed, Frontend
    Affects Versions: Impala 3.1.0
            Reporter: bharath v


Impala has two instances of pause monitor threads that try to detect system (IMPALA-3114) and GC pauses  (IMPALA-6857). They detect the pauses and log something to the daemon logs.  The idea here is to summarize and expose this information in the form of metrics in the web UI page. Something like,
 * Last n pause times and timestamps (system/GC)
 * Max/min pause times (system/GC)
 * Total count of pauses (system/GC)
 * Distribution of pause times (50%le, 75%le...99%le)
 * Anything else?...



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