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  1. Hadoop Common
  2. HADOOP-7370

Optimize pread on ChecksumFileSystem

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Details

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

    Description

      Currently the implementation of positional read in ChecksumFileSystem is verify inefficient - it actually re-opens the underlying file and checksum file, then seeks and uses normal read. Instead, it can push down positional read directly to the underlying FS and verify checksum.

      Attachments

        1. checksumfs-pread-0.20.txt
          10 kB
          Todd Lipcon

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            tlipcon Todd Lipcon
            tlipcon Todd Lipcon
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            Dates

              Created:
              Updated: