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From "Chris Nauroth (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-11935) Provide optional native implementation of stat syscall.
Date Thu, 07 May 2015 16:27:59 GMT
Chris Nauroth created HADOOP-11935:
--------------------------------------

             Summary: Provide optional native implementation of stat syscall.
                 Key: HADOOP-11935
                 URL: https://issues.apache.org/jira/browse/HADOOP-11935
             Project: Hadoop Common
          Issue Type: Improvement
          Components: fs, native
            Reporter: Chris Nauroth


Currently, {{RawLocalFileSystem.DeprecatedRawLocalFileStatus#loadPermissionInfo}} is implemented
as forking an {{ls}} command and parsing the output.  This was observed to be a bottleneck
in YARN-3491.  This issue proposes an optional native implementation of a {{stat}} syscall
through JNI.  We would maintain the existing code as a fallback for systems where the native
code is not available.



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