Jesus Camacho Rodriguez created HIVE-21399:
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Summary: Adjust hive.map.aggr.hash.min.reduction statically
depending on group by statistics
Key: HIVE-21399
URL: https://issues.apache.org/jira/browse/HIVE-21399
Project: Hive
Issue Type: Improvement
Components: Hive
Reporter: Jesus Camacho Rodriguez
Assignee: Jesus Camacho Rodriguez
Currently, the value is set statically from config variable. If stats are
available, we could try to adjust this value at optimization time to favor
turning off hash aggregation earlier.
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