Github user BorisOsipov commented on the issue:
https://github.com/apache/flink/pull/2859
@zentol I'd like to ask you, why FileSystem#initOutPathLocalFS() is not
properly synchronized?
Recently I faced with issues like FLINK-4798, FLINK-5077. In such issues
one thread removes files with the results of other threads because of lack of
synchronization in FileSystem#initOutPathLocalFS()
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