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https://issues.apache.org/jira/browse/IMPALA-12785?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17907288#comment-17907288
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Quanlong Huang commented on IMPALA-12785:
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We can use the existing AdminFnStmt to avoid adding new SQL syntax. It also
makes sure only admins have privilege to perform the operation.
Uploading a patch for review: https://gerrit.cloudera.org/c/22250/
> Exposing control of the event-processor by SQL commands
> -------------------------------------------------------
>
> Key: IMPALA-12785
> URL: https://issues.apache.org/jira/browse/IMPALA-12785
> Project: IMPALA
> Issue Type: New Feature
> Components: Catalog
> Reporter: Quanlong Huang
> Assignee: Quanlong Huang
> Priority: Major
>
> When event-processor goes into the ERROR state, admin should run a global
> INVALIDATE METADATA to recover it. This is expensive and will impact all
> workloads using Impala.
> It's proposed in this thread that we should expose a way to restart the
> event-processor if admins are sure that it's not stale (e.g. after manually
> refreshing some tables):
> https://lists.apache.org/thread/5mw8jd5hgz7yycz9h2pxvqj101k0j47m
> Both SQL commands and WebUI will be helpful.
> CC [[email protected]] [~hemanth619] [~VenuReddy] [~maxwellguo]
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