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https://issues.apache.org/jira/browse/HIVE-21312?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16777108#comment-16777108
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Gopal V commented on HIVE-21312:
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bq. use Tez counters to haul this data.
That was what used to exist before FS impl, but the app-master has to keep all
the counters in memory and the AM kept crashing without finishing large queries.
FS was added later, because it was faster than the counter approach.
> FSStatsAggregator::connect is slow
> ----------------------------------
>
> Key: HIVE-21312
> URL: https://issues.apache.org/jira/browse/HIVE-21312
> Project: Hive
> Issue Type: Improvement
> Components: Statistics
> Reporter: Rajesh Balamohan
> Assignee: Rajesh Balamohan
> Priority: Trivial
> Attachments: HIVE-21312.1.patch, HIVE-21312.2.patch
>
>
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