Chesnay Schepler created FLINK-9382:
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Summary: Inconsistent file storage behavior in FileCache
Key: FLINK-9382
URL: https://issues.apache.org/jira/browse/FLINK-9382
Project: Flink
Issue Type: Bug
Components: Local Runtime
Affects Versions: 1.6.0
Reporter: Chesnay Schepler
The file storage behavior in the {{FileCache}} is inconsistent and depends
whether we're accessing a file or zipped folder.
In case of a file we return the file returned from the {{PermanentBlobService}}
as is, in this case the blobserver takes care of deleting the file _at some
point_.
In case of a directory (that is implicitly zipped!) we extract the zip into a
separate storage directory and delete the zip afterwards (the deletion in
particular is questionable as it interferes with the blob server).
The underlying issue to me is that the responsibilities between the
{{PermanentBlobService}} and {{FileCache}} aren't clearly laid out, and they
actually seem a bit redundant.
We may want to change the FIleCache to be a thin wrapper around the
{{PermanentBlobService}} that only takes care of unzipping directories and
setting executable flags.
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