Details

    • Type: New Feature
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: Query Processor
    • Labels:
      None

      Description

      Moving the discussion to a new jira:

      I've implemented group_cat() in a rush, and found something difficult to slove:
      1. function group_cat() has a internal order by clause, currently, we can't implement such an aggregation in hive.
      2. when the strings will be group concated are too large, in another words, if data skew appears, there is often not enough memory to store such a big result.

        Attachments

          Issue Links

            Activity

              People

              • Assignee:
                coderplay Min Zhou
                Reporter:
                namit Namit Jain
              • Votes:
                6 Vote for this issue
                Watchers:
                10 Start watching this issue

                Dates

                • Created:
                  Updated: