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Posted to dev@flink.apache.org by "Stephan Ewen (JIRA)" <ji...@apache.org> on 2015/05/04 15:13:06 UTC

[jira] [Created] (FLINK-1968) Make Distributed Cache more robust

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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