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Posted to issues@impala.apache.org by "Tim Armstrong (Jira)" <ji...@apache.org> on 2019/10/09 17:22:00 UTC

[jira] [Created] (IMPALA-9033) Log metrics for slow I/Os

Tim Armstrong created IMPALA-9033:
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             Summary: Log metrics for slow I/Os
                 Key: IMPALA-9033
                 URL: https://issues.apache.org/jira/browse/IMPALA-9033
             Project: IMPALA
          Issue Type: Improvement
          Components: Backend
            Reporter: Tim Armstrong
            Assignee: Tim Armstrong


We should detect I/Os that take longer than a configurable threshold, e.g 10 seconds might be reasonable and then log some extra information about them - any of the metrics we get from the HDFS client.

This will help debug certain perf issues and hangs.



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