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  1. Hadoop HDFS
  2. HDFS-4053

Increase the default block size

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    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 2.1.0-beta
    • Component/s: None
    • Labels:
      None
    • Hadoop Flags:
      Reviewed
    • Release Note:
      The default blocks size prior to this change was 64MB. This jira changes the default block size to 128MB. To go back to previous behavior, please configure the in hdfs-site.xml, the configuration parameter "dfs.blocksize" to 67108864.

      Description

      The default HDFS block size (dfs.blocksize) has been 64mb forever. 128mb works well in practice on today's hardware configurations, most clusters I work with use it or higher (eg 256mb). Let's bump to 128mb in trunk for v3.

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        1. hdfs-4053.txt
          0.6 kB
          Eli Collins
        2. hdfs-4053.txt
          2 kB
          Eli Collins
        3. hdfs-4053.txt
          1 kB
          Eli Collins

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            • Assignee:
              eli Eli Collins
              Reporter:
              eli Eli Collins
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              Dates

              • Created:
                Updated:
                Resolved: