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Posted to common-issues@hadoop.apache.org by "Chris Nauroth (JIRA)" <ji...@apache.org> on 2015/05/07 18:27:59 UTC

[jira] [Created] (HADOOP-11935) Provide optional native implementation of stat syscall.

Chris Nauroth created HADOOP-11935:
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             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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