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Posted to issues@kudu.apache.org by "Todd Lipcon (JIRA)" <ji...@apache.org> on 2016/08/28 03:41:20 UTC

[jira] [Created] (KUDU-1582) maintenance manager scheduling very slow on TS with lots of data

Todd Lipcon created KUDU-1582:
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             Summary: maintenance manager scheduling very slow on TS with lots of data
                 Key: KUDU-1582
                 URL: https://issues.apache.org/jira/browse/KUDU-1582
             Project: Kudu
          Issue Type: Bug
          Components: perf, tserver
    Affects Versions: 0.10.0
            Reporter: Todd Lipcon


On a server with ~5.5TB of data, the maintenance manager scheduler thread has gotten quite slow. The thread takes many tens of seconds to pick a maintenance operation, and then the actual operations take only a few seconds to run. So, the actual "duty cycle" of those threads is quite low, and compaction/flushing falls behind.



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