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  1. IMPALA
  2. IMPALA-4137

Rolling restart of Impala

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    Details

    • Type: Improvement
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: Impala 2.2.4
    • Fix Version/s: None
    • Component/s: Distributed Exec

      Description

      Apologies if a jira exists for this. I could not find one.

      It would be very helpful to us to be able to rolling restart (and hopefully rolling upgrade) Impala.

      Based on my understanding of impala internals, I think this would require:

      • Highly available statestore and catalog. Currently catalog's metadata reload is the long pole in our impala restarts.
      • Impalads being able to stop without killing queries they are working on. Most of our queries are short so for us it would be sufficient to give the impala daemon a way to stop taking new work, then restart when it completes all work it has assigned.

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              • Assignee:
                Unassigned
                Reporter:
                alanj_impala_5a78 Alan Jackoway
              • Votes:
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                Dates

                • Created:
                  Updated: