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  1. Hadoop Common
  2. HADOOP-11935

Provide optional native implementation of stat syscall.

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Details

    • Improvement
    • Status: Open
    • Major
    • Resolution: Unresolved
    • None
    • None
    • fs, native
    • None

    Description

      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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          duplicates

          Bug - A problem which impairs or prevents the functions of the product. HADOOP-14600 LocatedFileStatus constructor forces RawLocalFS to exec a process to get the permissions

          • Major - Major loss of function.
          • Resolved
          is depended upon by

          Bug - A problem which impairs or prevents the functions of the product. YARN-3549 use JNI-based FileStatus implementation from io.nativeio.NativeIO.POSIX#getFstat instead of shell-based implementation from RawLocalFileSystem in checkLocalDir.

          • Major - Major loss of function.
          • Resolved
          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. YARN-3549 use JNI-based FileStatus implementation from io.nativeio.NativeIO.POSIX#getFstat instead of shell-based implementation from RawLocalFileSystem in checkLocalDir.

          • Major - Major loss of function.
          • Resolved
          is related to

          Bug - A problem which impairs or prevents the functions of the product. HADOOP-12603 TestSymlinkLocalFSFileContext#testSetTimesSymlinkToDir occasionally fail

          • Major - Major loss of function.
          • Resolved
          links to

          Web Link GitHub Pull Request #81

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              Unassigned Unassigned
              cnauroth Chris Nauroth
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              Dates

                Created:
                Updated: