Github user aljoscha commented on the pull request:
https://github.com/apache/flink/pull/1084#issuecomment-138252252
It could be done by circumventing FileSystem and just using the regular
Java File I/O API to perform the truncate if we detect that the FileSystem
works on file "file://" paths.
Should we do this? It seems like a bit of a hack to me.
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