Github user lvdongr closed the pull request at:
https://github.com/apache/spark/pull/18987
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GitHub user lvdongr opened a pull request:
https://github.com/apache/spark/pull/18987
[SPARK-21775][Core]Dynamic Log Level Settings for executors
## What changes were proposed in this pull request?
Someimes we want to change the log level of executor when our application
