Uploaded image for project: 'Hive'
  1. Hive
  2. HIVE-18055

cache like pattern object using map object in like function

    XMLWordPrintableJSON

Details

    • Improvement
    • Status: Patch Available
    • Minor
    • Resolution: Unresolved
    • None
    • 1.2.3
    • Query Processor
    • None

    Description

      Now, only one pattern object was cached in the like function. If the like function is working on one column, the pattern object will be generated continuously for the regular expression matching. It's very inefficient. So should we use LRU MAP to cache a batch of objects ?

      Attachments

        1. HIVE-18055.2-branch-1.2.patch
          7 kB
          wan kun
        2. HIVE-18055.3-branch-1.2.patch
          6 kB
          wan kun
        3. HIVE-18055-branch-1.2.patch
          6 kB
          wan kun

        Activity

          People

            wankunde wan kun
            wankunde wan kun
            Votes:
            0 Vote for this issue
            Watchers:
            2 Start watching this issue

            Dates

              Created:
              Updated:

              Time Tracking

                Estimated:
                Original Estimate - 168h
                168h
                Remaining:
                Remaining Estimate - 168h
                168h
                Logged:
                Time Spent - Not Specified
                Not Specified