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https://issues.apache.org/jira/browse/DRILL-1175?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jacques Nadeau updated DRILL-1175:
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Component/s: Execution - Relational Operators
Fix Version/s: (was: 0.9.0)
Future
> Add hash table occupancy statistics
> ------------------------------------
>
> Key: DRILL-1175
> URL: https://issues.apache.org/jira/browse/DRILL-1175
> Project: Apache Drill
> Issue Type: Improvement
> Components: Execution - Relational Operators
> Reporter: Aman Sinha
> Priority: Minor
> Fix For: Future
>
>
> For all the hash based operations, we currently collect a few run-time
> metrics such as number of buckets, number of entries, number of resizing
> attempts. We should also collect the hash table occupancy statistics to
> allow better diagnosis of performance issues. The occupancy stats should
> include min, max and average length of a hash chain among all the buckets.
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