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  1. Hadoop HDFS
  2. HDFS-14293

Increase Default Size of dfs.stream-buffer-size

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    Details

    • Type: Improvement
    • Status: Open
    • Priority: Minor
    • Resolution: Unresolved
    • Affects Version/s: 3.2.0
    • Fix Version/s: None
    • Component/s: datanode
    • Labels:
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      Description

      For many years (7+) now, the JDK has been using a default buffer size of 8192 bytes. Hadoop still defaults to a size half of that. The default is dfs.stream-buffer-size is 4096 bytes.

      https://hadoop.apache.org/docs/r2.8.0/hadoop-project-dist/hadoop-hdfs/hdfs-default.xml

      Please increase default size to 8192.

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              • Assignee:
                Unassigned
                Reporter:
                belugabehr David Mollitor
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                Dates

                • Created:
                  Updated: