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https://issues.apache.org/jira/browse/IMPALA-8634?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16929371#comment-16929371
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Sahil Takiar commented on IMPALA-8634:
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Actually I think we just do the exact same thing as IMPALA-8904 it should all
work.
> Catalog client should be resilient to temporary Catalog outage
> --------------------------------------------------------------
>
> Key: IMPALA-8634
> URL: https://issues.apache.org/jira/browse/IMPALA-8634
> Project: IMPALA
> Issue Type: Improvement
> Components: Catalog
> Affects Versions: Impala 3.2.0
> Reporter: Michael Ho
> Assignee: Sahil Takiar
> Priority: Critical
>
> Currently, when the catalog server is down, catalog clients will fail all
> RPCs sent to it. In essence, DDL queries will fail and the Impala service
> becomes a lot less functional. Catalog clients should consider retrying
> failed RPCs with some exponential backoff in between while catalog server is
> being restarted after crashing. We probably need to add [a test
> |https://github.com/apache/impala/blob/master/tests/custom_cluster/test_restart_services.py]
> to exercise the paths of catalog restart to verify coordinators are
> resilient to it.
> cc'ing [~stakiar], [~joemcdonnell], [~twm378]
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