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https://issues.apache.org/jira/browse/PARQUET-1901?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17242634#comment-17242634
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Xinli Shang commented on PARQUET-1901:
--------------------------------------

For now, I think we can move it to the next release. 

> Add filter null check for ColumnIndex  
> ---------------------------------------
>
>                 Key: PARQUET-1901
>                 URL: https://issues.apache.org/jira/browse/PARQUET-1901
>             Project: Parquet
>          Issue Type: Bug
>          Components: parquet-mr
>    Affects Versions: 1.11.0
>            Reporter: Xinli Shang
>            Assignee: Xinli Shang
>            Priority: Major
>             Fix For: 1.12.0
>
>
> This Jira is opened for discussion that should we add null checking for the 
> filter when ColumnIndex is enabled. 
> In the ColumnIndexFilter#calculateRowRanges() method, the input parameter 
> 'filter' is assumed to be non-null without checking. It throws NPE when 
> ColumnIndex is enabled(by default) but there is no filter set in the 
> ParquetReadOptions. The call stack is as below. 
>     java.lang.NullPointerException
>         at 
> org.apache.parquet.internal.filter2.columnindex.ColumnIndexFilter.calculateRowRanges(ColumnIndexFilter.java:81)
>         at 
> org.apache.parquet.hadoop.ParquetFileReader.getRowRanges(ParquetFileReader.java:961)
>         at 
> org.apache.parquet.hadoop.ParquetFileReader.readNextFilteredRowGroup(ParquetFileReader.java:891)
> If we don't add, the user might need to choose to call readNextRowGroup() or 
> readFilteredNextRowGroup() accordingly based on filter existence. 
> Thoughts?  
>   



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