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Posted to issues@spark.apache.org by "Sean Owen (JIRA)" <ji...@apache.org> on 2016/10/08 09:24:21 UTC
[jira] [Reopened] (SPARK-7936) Add configuration for initial size
and limit of hash for aggregation
[ https://issues.apache.org/jira/browse/SPARK-7936?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sean Owen reopened SPARK-7936:
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> Add configuration for initial size and limit of hash for aggregation
> --------------------------------------------------------------------
>
> 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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