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https://issues.apache.org/jira/browse/SPARK-3056?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Reynold Xin resolved SPARK-3056.
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Resolution: Fixed
Assignee: Yin Huai
Fix Version/s: 1.5.0
> Sort-based Aggregation
> ----------------------
>
> Key: SPARK-3056
> URL: https://issues.apache.org/jira/browse/SPARK-3056
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Reporter: Cheng Hao
> Assignee: Yin Huai
> Fix For: 1.5.0
>
>
> Currently, SparkSQL only support the hash-based aggregation, which may cause
> OOM if too many identical keys in the input tuples.
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