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  1. Hadoop HDFS
  2. HDFS-3246

pRead equivalent for direct read path

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Details

    • Improvement
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • 3.0.0-alpha1
    • 3.3.0
    • hdfs-client, performance
    • None

    Description

      There is no pread equivalent in ByteBufferReadable. We should consider adding one. It would be relatively easy to implement for the distributed case (certainly compared to HDFS-2834), since DFSInputStream does most of the heavy lifting.

      Attachments

        1. HDFS-3246.001.patch
          28 kB
          Zheng Hu
        2. HDFS-3246.002.patch
          29 kB
          Sahil Takiar
        3. HDFS-3246.003.patch
          29 kB
          Sahil Takiar
        4. HDFS-3246.004.patch
          30 kB
          Sahil Takiar
        5. HDFS-3246.005.patch
          48 kB
          Sahil Takiar
        6. HDFS-3246.006.patch
          48 kB
          Sahil Takiar
        7. HDFS-3246.007.patch
          56 kB
          Sahil Takiar

        Issue Links

          is related to

          New Feature - A new feature of the product, which has yet to be developed. HADOOP-18287 Provide a shim library for modern FS APIs

          • Major - Major loss of function.
          • Open

          Improvement - An improvement or enhancement to an existing feature or task. HBASE-21879 Read HFile's block to ByteBuffer directly instead of to byte for reducing young gc purpose

          • Major - Major loss of function.
          • Closed

          Improvement - An improvement or enhancement to an existing feature or task. HDFS-2834 ByteBuffer-based read API for DFSInputStream

          • Major - Major loss of function.
          • Closed

          Task - A task that needs to be done. HDFS-14483 Backport HDFS-14111,HDFS-3246 ByteBuffer pread interface to branch-2.9

          • Major - Major loss of function.
          • Resolved

          Task - A task that needs to be done. HDFS-14585 Backport HDFS-8901 Use ByteBuffer in DFSInputStream#read to branch2.9

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

          Sub-task - The sub-task of the issue HDFS-8901 Use ByteBuffer in striping positional read

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

          Web Link GitHub Pull Request #597

          Activity

            People

              stakiar Sahil Takiar
              henryr Henry Robinson
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              Dates

                Created:
                Updated:
                Resolved: