Davies Liu created SPARK-12950:
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Summary: Improve performance of BytesToBytesMap
Key: SPARK-12950
URL: https://issues.apache.org/jira/browse/SPARK-12950
Project: Spark
Issue Type: Improvement
Components: SQL
Reporter: Davies Liu
When benchmark generated aggregate with grouping keys, the profiling show that
lookup in BytesToBytesMap took about 90% of the CPU time, we should optimize it.
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