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  1. Hadoop HDFS
  2. HDFS-6450

Support non-positional hedged reads in HDFS

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Details

    • Improvement
    • Status: Patch Available
    • Major
    • Resolution: Unresolved
    • 2.4.0
    • None
    • None
    • None

    Description

      HDFS-5776 added support for hedged positional reads. We should also support hedged non-position reads (aka regular reads).

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        is depended upon by

        Improvement - An improvement or enhancement to an existing feature or task. HDFS-6286 adding a timeout setting for local read io

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

        Sub-task - The sub-task of the issue HDFS-7782 Erasure coding: pread from files in striped layout

        • Major - Major loss of function.
        • Resolved

        Improvement - An improvement or enhancement to an existing feature or task. HDFS-5776 Support 'hedged' reads in DFSClient

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

        Bug - A problem which impairs or prevents the functions of the product. HDFS-97 DFS should detect slow links(nodes) and avoid them

        • Major - Major loss of function.
        • Resolved

        Bug - A problem which impairs or prevents the functions of the product. HDFS-12514 Cancelled HedgedReads cause block to be marked as suspect on Windows

        • Major - Major loss of function.
        • Patch Available
        supercedes

        Improvement - An improvement or enhancement to an existing feature or task. HDFS-6286 adding a timeout setting for local read io

        • Major - Major loss of function.
        • Resolved

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            xieliang007 Liang Xie Assign to me
            cmccabe Colin McCabe
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              Updated:

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