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  1. Hadoop Common
  2. HADOOP-5595

NameNode does not need to run a replicator to choose a random DataNode

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Details

    • Improvement
    • Status: Closed
    • Major
    • Resolution: Fixed
    • None
    • 0.21.0
    • None
    • None
    • Reviewed

    Description

      FSNamesystem#getRandomDatanode uses a replicator to choose a random DataNode. It's an overkill. Instead, Topology#chooseRandom is a much light-weight way to choose a random DataNode from a cluster map.

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        1. randomDataNode.patch
          1 kB
          Hairong Kuang

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            hairong Hairong Kuang
            hairong Hairong Kuang
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              Updated:
              Resolved:

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