Aman Sinha created DRILL-1175:
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Summary: Add hash table occupancy statistics
Key: DRILL-1175
URL: https://issues.apache.org/jira/browse/DRILL-1175
Project: Apache Drill
Issue Type: Improvement
Reporter: Aman Sinha
Priority: Minor
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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