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https://issues.apache.org/jira/browse/SPARK-29171?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Maxim Gekk updated SPARK-29171:
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Description: The updated benchmark results show performance regression
*more than 4 times* in Parquet MR on scanning 100 columns, see
https://github.com/apache/spark/pull/25828/files#diff-e37c3433287c7371ff9c2404db821095R248
. Need to find out the root cause of this and fix it. (was: The updated
benchmark results show performance regression more than 4 times in Parquet MR
on scanning 100 columns, see
https://github.com/apache/spark/pull/25828/files#diff-e37c3433287c7371ff9c2404db821095R248
. Need to find out the root cause of this and fix it.)
> Performance regression in Parquet MR on scans of 100 columns
> ------------------------------------------------------------
>
> Key: SPARK-29171
> URL: https://issues.apache.org/jira/browse/SPARK-29171
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Maxim Gekk
> Priority: Major
>
> The updated benchmark results show performance regression *more than 4 times*
> in Parquet MR on scanning 100 columns, see
> https://github.com/apache/spark/pull/25828/files#diff-e37c3433287c7371ff9c2404db821095R248
> . Need to find out the root cause of this and fix it.
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