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From "Robert Muir (JIRA)" <j...@apache.org>
Subject [jira] [Created] (LUCENE-6442) Add a mockfs with unpredictable but deterministic file listing order
Date Mon, 20 Apr 2015 14:52:58 GMT
Robert Muir created LUCENE-6442:
-----------------------------------

             Summary: Add a mockfs with unpredictable but deterministic file listing order
                 Key: LUCENE-6442
                 URL: https://issues.apache.org/jira/browse/LUCENE-6442
             Project: Lucene - Core
          Issue Type: Task
            Reporter: Robert Muir


Any test that processes with directory listing apis (Directory.listAll(), DirectoryStream,
walkFileTree, etc) and does not sort the results can cause reproducibility difficulties, because
it might e.g. consume from random() in a different order and so on.

We can instead sort and shuffle in a predictable way per-class based on the random seed.



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