Uploaded image for project: 'Hadoop Common'
  1. Hadoop Common
  2. HADOOP-7421

Performance Patch: Disable Client-Side Nagle By Default

    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Major
    • Resolution: Duplicate
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: None
    • Labels:
      None

      Description

      HADOOP-2232 was a valuable contribution, but I would suggest that Hadoop IPC should disable Nagle's algorithm by default, to improve performance system-wide. Nagle just adds delay to network connections, which is unnecessary in the high bandwidth networks that Hadoop uses. As it stands, this becomes an obscure, little known but important performance optimization (especially for HBase), which took us days to track down during a performance tuning exercise. Obviously integrating this optimization into the Hadoop release will require performance testing to validate that it doesn't harm performance, but it should only help.

      I will submit a patch for how to address this in trunk.

        Attachments

          Issue Links

            Activity

              People

              • Assignee:
                Unassigned
                Reporter:
                rbodkin Ron Bodkin
              • Votes:
                0 Vote for this issue
                Watchers:
                11 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved: