[jira] [Created] (FLINK-3878) File cache doesn't support multiple duplicate temp directories

[Shang Yuanchun (Jira)]

Ken Krugler created FLINK-3878:
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             Summary: File cache doesn't support multiple duplicate temp directories
                 Key: FLINK-3878
                 URL: https://issues.apache.org/jira/browse/FLINK-3878
             Project: Flink
          Issue Type: Bug
    Affects Versions: 1.0.2
            Reporter: Ken Krugler


Based on https://ci.apache.org/projects/flink/flink-docs-master/setup/config.html, you should be able to specify the same temp directory name multiple times. This works for some of the Flink infrastructure (e.g. the TaskManager's temp file directory), but not for FileCache.

The problem is that the FileCache() constructor tries to use the same random directory name for each of the specified temp dir locations, so after the first directory is created, the second create fails.



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