Yang Jie created SPARK-33702:
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Summary: Result of add "unused-locals" compile arg to scalac
Key: SPARK-33702
URL: https://issues.apache.org/jira/browse/SPARK-33702
Project: Spark
Issue Type: Improvement
Components: Build
Affects Versions: 3.2.0
Reporter: Yang Jie
Try to add "unused-locals" compile arg to scalac and collect the warning
informations, there are total 184 files and 296 compile warnings about
"unused-locals":
* core: 92 warnings
* mllib-local\mllib: 42 warnings
* graphx: 6 warnings
* streaming: 14 warnings
* Sql\hive\avro: 81 warnings
* Yarn\mesos\k8s: 23 warnings
* kafka: 3 warnings
* kinesis-asl: 4 warnings
* examples: 31 warnings
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