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Apache Spark commented on SPARK-15240: -------------------------------------- User 'viirya' has created a pull request for this issue: https://github.com/apache/spark/pull/13018 > Use buffer variables for update/merge expressions instead duplicate > serialization/deserialization > ------------------------------------------------------------------------------------------------- > > Key: SPARK-15240 > URL: https://issues.apache.org/jira/browse/SPARK-15240 > Project: Spark > Issue Type: Improvement > Components: SQL > Reporter: Liang-Chi Hsieh > > We do serialization/deserialization on aggregation buffer in > TungstenAggregate for each aggregation function. It wastes time on duplicate > serde for the same grouping keys. We can optimize it. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org