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Posted to issues@spark.apache.org by "Navis (JIRA)" <ji...@apache.org> on 2015/05/29 07:23:17 UTC

[jira] [Created] (SPARK-7936) Add configuration for initial size of hash for aggregation and limit

Navis created SPARK-7936:
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             Summary: Add configuration for initial size of hash for aggregation and limit
                 Key: SPARK-7936
                 URL: https://issues.apache.org/jira/browse/SPARK-7936
             Project: Spark
          Issue Type: Improvement
          Components: SQL
            Reporter: Navis
            Priority: Minor


Partial aggregation takes a lot of memory and mostly cannot be completed if it's not sliced into very small partitions (large in count). This patch is for limiting entry size for partial aggregation. Initial size for hash is just a bonus.



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