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  1. Hive
  2. HIVE-7926 long-lived daemons for query fragment execution, I/O and caching
  3. HIVE-9820

LLAP: Use a share-nothing scoreboard /status implementation

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    • Type: Sub-task
    • Status: Resolved
    • Priority: Major
    • Resolution: Not A Problem
    • Affects Version/s: llap
    • Fix Version/s: None
    • Component/s: llap
    • Labels:
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      Description

      To prevent thread-conflicts in executor information, the Apache HTTP servers use a share-nothing data structure known as a scoreboard.

      This is read by various systems like mod_status to read out the current state of executors available for PHP (and similar mod_* engines).

      The /status output is traditionally periodically read by the load-balancers to route requests away from busy machines.

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            • Assignee:
              yohabe Yohei Abe
              Reporter:
              gopalv Gopal Vijayaraghavan
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