attilapiros commented on issue #24235: [SPARK-27301][Dstream]Shorten the 
FileSystem cached life cycle to the cleanup method inner scope
URL: https://github.com/apache/spark/pull/24235#issuecomment-477880630
 
 
   @yaooqinn just to have the same understanding: 
   From your previous comments I assume your manual test failed even beside 
disabled caching (fs.\<scheme\>.impl.disable.cache=true).
   
   As the `delete` in line 90 is in try-catch block where `Exception` is 
matched and there is no re-throw continuing with warning is very much expected:
   
   
https://github.com/apache/spark/blob/8d87a3f28800a605daaec362095308358c4fa640/streaming/src/main/scala/org/apache/spark/streaming/dstream/DStreamCheckpointData.scala#L85-L97

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