Uploaded image for project: 'IMPALA'
  1. IMPALA
  2. IMPALA-633

enable metadata only operations for queries only against partition keys / virtual columns

    XMLWordPrintableJSON

    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Major
    • Resolution: Duplicate
    • Affects Version/s: Impala 1.1.1
    • Fix Version/s: Impala 2.5.0
    • Component/s: None
    • Labels:
      None

      Description

      Per
      http://community.cloudera.com/t5/Interactive-Short-cycle-SQL/Impala-and-virtual-columns/m-p/2431#M76
      Impala could do a metadata only operation to answer this query. Might make sense to add this functionality.

      e.g:
      select distinct partition_key_col from tab;
      This could simply query the Metastore for the LOV.

        Attachments

          Activity

            People

            • Assignee:
              Unassigned
              Reporter:
              grahn Greg Rahn
            • Votes:
              1 Vote for this issue
              Watchers:
              2 Start watching this issue

              Dates

              • Created:
                Updated:
                Resolved: