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https://issues.apache.org/jira/browse/HIVE-23776?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zoltan Haindrich reassigned HIVE-23776:
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> Retire quickstats autocollection
> --------------------------------
>
> Key: HIVE-23776
> URL: https://issues.apache.org/jira/browse/HIVE-23776
> Project: Hive
> Issue Type: Improvement
> Reporter: Zoltan Haindrich
> Assignee: Zoltan Haindrich
> Priority: Major
>
> this is about:
> * num files
> * datasize (sum of filesizes)
> * num erasure coded files
> right now these are scanned during every BasicStatsTask execution - which
> means some filesystem reads/etc - for small inserts these are visible in case
> the fs is a bit slower (s3 and friends)
> I don't think they are really in use...we rely more on columnstats which are
> more accurate ; and because of the datasize in this case is for "offline"
> (ondisk) - while we should be insted calculate with "online" sizes...
> proposal:
> * remove collection and storage of this data
> * collect it on the fly during "desc formatted" statements to provide them
> for informational purposes
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