Uploaded image for project: 'Hive'
  1. Hive
  2. HIVE-7926 long-lived daemons for query fragment execution, I/O and caching
  3. HIVE-10162

LLAP: Avoid deserializing the plan > 1 times in a single thread

    XMLWordPrintableJSON

Details

    • Sub-task
    • Status: Closed
    • Major
    • Resolution: Fixed
    • llap
    • llap
    • None
    • None

    Description

      Kryo shows up in the critical hot-path for LLAP when using a plan with a very large filter condition, due to the fact that the plan is deserialized more than once for each task.

      Attachments

        1. HIVE-10162.1.patch
          0.9 kB
          Gunther Hagleitner
        2. deserialize-plan-2.png
          103 kB
          Gopal Vijayaraghavan
        3. deserialize-plan-1.png
          79 kB
          Gopal Vijayaraghavan

        Issue Links

          is related to

          Sub-task - The sub-task of the issue HIVE-10203 Move fragment execution onto a thread pool

          • Major - Major loss of function.
          • Open

          Activity

            People

              hagleitn Gunther Hagleitner
              gopalv Gopal Vijayaraghavan
              Votes:
              0 Vote for this issue
              Watchers:
              3 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved: