Cheng Hao created SPARK-3056:
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Summary: Sort-based Aggregation
Key: SPARK-3056
URL: https://issues.apache.org/jira/browse/SPARK-3056
Project: Spark
Issue Type: Improvement
Components: SQL
Reporter: Cheng Hao
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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