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https://issues.apache.org/jira/browse/PARQUET-1964?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gabor Szadovszky resolved PARQUET-1964.
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Resolution: Fixed
> Properly handle missing/null filter
> -----------------------------------
>
> Key: PARQUET-1964
> URL: https://issues.apache.org/jira/browse/PARQUET-1964
> Project: Parquet
> Issue Type: Improvement
> Reporter: Yuming Wang
> Assignee: Gabor Szadovszky
> Priority: Major
>
> How to reproduce this issue:
> {code:scala}
> val hadoopInputFile = HadoopInputFile.fromPath(new
> Path("/path/to/parquet/000.snappy.parquet"), new Configuration())
> val reader = ParquetFileReader.open(hadoopInputFile)
> val recordCount = reader.getFilteredRecordCount
> reader.close()
> {code}
> Output:
> {noformat}
> java.lang.NullPointerException was thrown.
> 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.getFilteredRecordCount(ParquetFileReader.java:766)
> {noformat}
> UPDATE: This is not only about the potential NPE if a {{null}} filter is set
> but to handle the missing/null filter in a better performing way. (Currently
> a NOOP filter implementation is used by default if no filter is set which
> requires to load the related data for column index/bloom filter even if no
> actual filtering will occur.)
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