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Posted to issues-all@impala.apache.org by "Adrian Ng (JIRA)" <ji...@apache.org> on 2018/09/19 23:57:00 UTC
[jira] [Commented] (IMPALA-7597) "show partitions" does not retry
on InconsistentMetadataFetchException
[ https://issues.apache.org/jira/browse/IMPALA-7597?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16621330#comment-16621330 ]
Adrian Ng commented on IMPALA-7597:
-----------------------------------
As part of this fix, we should make #retries configurable before throwing out InconsistentMetadataFetchException. Even with 10, we are hitting this exceptions with our workload.
> "show partitions" does not retry on InconsistentMetadataFetchException
> ----------------------------------------------------------------------
>
> Key: IMPALA-7597
> URL: https://issues.apache.org/jira/browse/IMPALA-7597
> Project: IMPALA
> Issue Type: Bug
> Components: Frontend
> Affects Versions: Impala 3.1.0
> Reporter: bharath v
> Assignee: Vuk Ercegovac
> Priority: Critical
>
> IMPALA-7530 added retries in case LocalCatalog throws InconsistentMetadataFetchException. These retries apply to all code paths taking {{Frontend#createExecRequest()}}.
> "show partitions" does not take this path and aborts the first time it sees InconsistentMetadataFetchException. (It takes {{Frontend#getTableStats()}})
> We need to make sure all the queries retry if they hit this exception.
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