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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2021/07/07 13:55:50 UTC

[GitHub] [arrow-datafusion] NGA-TRAN commented on issue #396: DataFusion benchmarks should show executed plan with metrics after query completes

NGA-TRAN commented on issue #396:
URL: https://github.com/apache/arrow-datafusion/issues/396#issuecomment-875625584


   Regarding metrics, I think the following items will be useful:
     1. Sort algorithm (quick sort, ...)
     2. If possible, how many partitions (input streams) get sorted.
     3. Depends on sort algorithm, we may be able to know what kind of input encoding (e.g. RLE) and number of distinct values. I think these metrics will also help us to evaluate the effectiveness of the sort algorithm we choose.


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