Uploaded image for project: 'IMPALA'
  1. IMPALA
  2. IMPALA-13566

Expose query cancellation status to UDF interface

    XMLWordPrintableJSON

Details

    • Improvement
    • Status: Open
    • Major
    • Resolution: Unresolved
    • None
    • None
    • Backend
    • None

    Description

      Some Impala UDF implementation can be complex and time consuming. If UDF evaluation happen in uninterruptible call path like in Scan Predicate evaluation, UDF may block query fragment cancellation for long time. We should consider exposing query cancellation status to UDF interface. UDF implementation can periodically check for this status and fail fast upon finding cancellation.

      Attachments

        Activity

          People

            Unassigned Unassigned
            rizaon Riza Suminto
            Votes:
            0 Vote for this issue
            Watchers:
            2 Start watching this issue

            Dates

              Created:
              Updated: