Stephan Ewen created FLINK-1968:
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Summary: Make Distributed Cache more robust
Key: FLINK-1968
URL: https://issues.apache.org/jira/browse/FLINK-1968
Project: Flink
Issue Type: Bug
Reporter: Stephan Ewen
The distributed cache has a variety of issues at the moment.
- It does not give a proper exception when a non-cached file is accessed
- It swallows I/O exceptions that happen during file transfer and later only
returns null
- It keeps inonsistently reference counts and attempts to copy often,
resolving this via file collisions
- Files are not properly removes on shutdown
- No shutdown hook to remove files when process is killed
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