Uploaded image for project: 'IMPALA'
  1. IMPALA
  2. IMPALA-3902

Multi-threaded query execution

    XMLWordPrintableJSON

Details

    • Epic
    • Status: Resolved
    • Minor
    • Resolution: Fixed
    • Impala 2.6.0
    • Impala 4.0.0
    • Backend
    • Impala Multi-threaded query execution

    Description

      Currently, a single query fragment is run in a quasi-single threaded manner on a node: the scanners are run in multiple threads, but all other operators (joins, aggregation) are run in the main thread.

      The goal is to add multi-threaded execution on a single node by running multiple fragment instances (each of which runs in a single thread).

      Attachments

        Issue Links

          is a parent of

          Sub-task - The sub-task of the issue IMPALA-3567 Factor out join build-side

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Resolved
          is depended upon by

          Epic - Created by Jira Software - do not edit or delete. Issue type for a big user story that needs to be broken down. IMPALA-9807 Multi-threaded query execution - Further Enhancements

          • Major - Major loss of function.
          • Open

          Umbrella - An overarching type made of sub-tasks IMPALA-8965 Cleanup after switch to multi-threaded query execution

          • Major - Major loss of function.
          • Open
          is duplicated by

          Improvement - An improvement or enhancement to an existing feature or task. IMPALA-2849 Investigate on improving the parallelism on a single node

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Resolved
          is related to

          Improvement - An improvement or enhancement to an existing feature or task. IMPALA-753 Parallelize HBase scan

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Resolved
          relates to

          Epic - Created by Jira Software - do not edit or delete. Issue type for a big user story that needs to be broken down. IMPALA-10486 Multithreading upgrade path for large clusters

          • Major - Major loss of function.
          • Open
          There are no Sub-Tasks for this issue.

          Activity

            People

              tarmstrong Tim Armstrong
              marcelk Marcel Kinard
              Votes:
              4 Vote for this issue
              Watchers:
              35 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved: