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https://issues.apache.org/jira/browse/HIVE-17084?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16587093#comment-16587093
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Zoltan Haindrich commented on HIVE-17084:
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I wonder if we will still have enough tests to cover it when column stats are
not available: because there were some tests which explicitly turned it on -
however there's only a few which disable it... but anyway: having more test
coverage when it's enabled is better anyway...
this patch also makes the perf cli plans more realistic!
+1
> Turn on hive.stats.fetch.column.stats configuration flag
> --------------------------------------------------------
>
> Key: HIVE-17084
> URL: https://issues.apache.org/jira/browse/HIVE-17084
> Project: Hive
> Issue Type: Task
> Components: Statistics
> Reporter: Vineet Garg
> Assignee: Vineet Garg
> Priority: Major
> Fix For: 3.2.0
>
> Attachments: HIVE-17084.1.patch, HIVE-170884.4.patch,
> HIVE-170884.5.patch
>
>
> This flag is off by default and could result in bad plans due to missing
> column statistics.
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