cloud-fan commented on issue #28163: [SPARK-31359][SQL][3.0] Speed up timestamps rebasing URL: https://github.com/apache/spark/pull/28163#issuecomment-611897610 > Saving timestamps to parquet files is ~ x3.8 faster > Loading timestamps from parquet files is ~x2.8 faster. > Loading timestamps by Vectorized reader ~x4.6 faster. I think we should use 2.4 as the baseline. E.g. before this PR, the rebase makes 3.0 x times slower than 2.4, after this PR, it's x percent. @MaxGekk can you update it?
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