Uploaded image for project: 'IMPALA'
  1. IMPALA
  2. IMPALA-4123

Columnar decoding in Parquet scanner

    XMLWordPrintableJSON

    Details

      Description

      Apache Parquet have some nice performance improvements to bit-packed decoding in their Parquet scanner (which is derived from Impala's): https://github.com/apache/parquet-cpp/pull/140

      We should do something similar - i.e. switch to more of a batch-oriented approach to decoding rather than value-at-a-time

        Attachments

          Issue Links

            Activity

              People

              • Assignee:
                tarmstrong Tim Armstrong
                Reporter:
                tarmstrong Tim Armstrong
              • Votes:
                0 Vote for this issue
                Watchers:
                3 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved: