Liang-Chi Hsieh created SPARK-15240:
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Summary: 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.
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