Details
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Improvement
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Status: Open
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Major
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Resolution: Unresolved
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Impala 2.2.4
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None
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.
Attachments
Issue Links
- is blocked by
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IMPALA-1760 Add Impala SQL command to gracefully shut down an Impala daemon
- Resolved
- is related to
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IMPALA-7665 Bringing up stopped statestore causes queries to fail
- Resolved
1.
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Play nice with load balancers when shutting down coordinator | Open | Unassigned |