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https://issues.apache.org/jira/browse/SPARK-26345?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17308000#comment-17308000
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Xinli Shang commented on SPARK-26345:
-------------------------------------

Yes, it needs some synchronization. I have the modified version implementation 
in Presto. You can check it 
[here|https://github.com/shangxinli/presto/commit/f6327a161eb6cfd5137f679620e095d8257816b8#diff-bb24b92e28343804ebaf540efe6c1cda0b5e2524e6811f8fe2daee5944dad386R203].
 

> Parquet support Column indexes
> ------------------------------
>
>                 Key: SPARK-26345
>                 URL: https://issues.apache.org/jira/browse/SPARK-26345
>             Project: Spark
>          Issue Type: Umbrella
>          Components: SQL
>    Affects Versions: 3.1.0
>            Reporter: Yuming Wang
>            Assignee: Yuming Wang
>            Priority: Major
>             Fix For: 3.2.0
>
>
> Parquet 1.11 supports column indexing. Spark can supports this feature for 
> better read performance.
> More details:
> https://issues.apache.org/jira/browse/PARQUET-1201
>  
> Benchmark result:
> [https://github.com/apache/spark/pull/31393#issuecomment-769767724]
> This feature is enabled by default, and users can disable it by setting 
> {{parquet.filter.columnindex.enabled}} to false.



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