Apache Jena
  1. Apache Jena
  2. JENA-40

Query that runs more or less forever

    Details

    • Type: Bug Bug
    • Status: Closed
    • Priority: Major Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: TDB
    • Labels:
      None

      Description

      Using the data set you have from me, the following query, which looks very much like a series of other queries that run quite rapidly, shows no sign of finishing.

      1. yk.txt
        4 kB
        Benson Margulies
      2. r.rq
        6 kB
        Benson Margulies

        Activity

        Hide
        Benson Margulies added a comment -

        Here's a quick snapshot from yourkit, but I bet it just states the obvious.

        Show
        Benson Margulies added a comment - Here's a quick snapshot from yourkit, but I bet it just states the obvious.
        Hide
        Benson Margulies added a comment -

        Removing either of the two OPTIONAL blocks solves the problem of taking forever.

        Show
        Benson Margulies added a comment - Removing either of the two OPTIONAL blocks solves the problem of taking forever.
        Hide
        Benson Margulies added a comment -

        Changing the OPTIONAL's to UNION and adding the necessary constraint to both of them also makes it run in reasonable time/

        Show
        Benson Margulies added a comment - Changing the OPTIONAL's to UNION and adding the necessary constraint to both of them also makes it run in reasonable time/
        Hide
        Andy Seaborne added a comment -

        See discussion on mailing list.

        Show
        Andy Seaborne added a comment - See discussion on mailing list.

          People

          • Assignee:
            Andy Seaborne
            Reporter:
            Benson Margulies
          • Votes:
            0 Vote for this issue
            Watchers:
            0 Start watching this issue

            Dates

            • Created:
              Updated:
              Resolved:

              Development