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https://issues.apache.org/jira/browse/IMPALA-12951?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17843919#comment-17843919
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Michael Smith commented on IMPALA-12951:
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Impala has a general query retry mechanism. It's not used for inserts. I
believe this problem only applies to system tables, but not 100% sure.
> Investigate RETRY_FAILED_QUERIES with System Tables
> ---------------------------------------------------
>
> Key: IMPALA-12951
> URL: https://issues.apache.org/jira/browse/IMPALA-12951
> Project: IMPALA
> Issue Type: Task
> Reporter: Michael Smith
> Priority: Major
>
> My theory is that {{RETRY_FAILED_QUERIES}} doesn't work well with querying
> System Tables because coordinators don't get added to a blacklist when they
> fail, so it reschedules them on the same set of nodes.
> Look into whether issues with {{RETRY_FAILED_QUERIES}} when a coordinator
> restarts (without graceful shutdown) are unique to coordinators, and how to
> improve it.
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