Kazuaki Ishizaki created SPARK-22746:
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Summary: Avoid the generation of useless mutable states by
SortMergeJoin
Key: SPARK-22746
URL: https://issues.apache.org/jira/browse/SPARK-22746
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 2.3.0
Reporter: Kazuaki Ishizaki
Generated code in {{SortMergeJoin}} uses global mutable variables to extend
lifetime of variables in a nested loop. The generated code can use local
variables instead of global mutable variables.
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