[GitHub] [spark] gengliangwang commented on pull request #39139: [SPARK-41431][CORE][SQL][UI] Protobuf serializer for `SQLExecutionUIData`

[GitBox <gi...@apache.org>]

gengliangwang commented on PR #39139:
URL: https://github.com/apache/spark/pull/39139#issuecomment-1363731187

   > Should we clean up the spark.ui.store.path directory when SparkContext.stop()? Otherwise, 1.The disk space occupied by the spark.ui.store.path directory will continue to grow. 2. When submitting new App and reusing the spark.ui.store.path directory, we will see the content related to the previous App, which is a bit strange
   
   Good question. We can have a configuration for this one. By default, we delete the RocksDB instance. 
   Some users may want to see the history, or the file can be used for history server. 


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