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Posted to issues-all@impala.apache.org by "Gabor Kaszab (Jira)" <ji...@apache.org> on 2019/08/27 13:45:00 UTC
[jira] [Commented] (IMPALA-8631) Ensure that cached data is always
up to date to avoid reads based on stale metadata for transactional read
only tables
[ https://issues.apache.org/jira/browse/IMPALA-8631?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16916735#comment-16916735 ]
Gabor Kaszab commented on IMPALA-8631:
--------------------------------------
Hey [~dgarg],
May I ask for some furhter details of this task? Here, by cached data do we mean this?
be/src/runtime/io/data-cache.h
The title says "transactional read only" tables. Is that meant to be "transactional insert only" tables?
> Ensure that cached data is always up to date to avoid reads based on stale metadata for transactional read only tables
> -----------------------------------------------------------------------------------------------------------------------
>
> Key: IMPALA-8631
> URL: https://issues.apache.org/jira/browse/IMPALA-8631
> Project: IMPALA
> Issue Type: Improvement
> Reporter: Dinesh Garg
> Assignee: Gabor Kaszab
> Priority: Major
> Labels: impala-acid
>
> Acquire latest validWriteIdList in the coordinator and validate that the cached data is up to date. Automatically force refresh with query if it’s not.
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