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https://issues.apache.org/jira/browse/PARQUET-41?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14600363#comment-14600363
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Ryan Blue commented on PARQUET-41:
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Are you saying you'd have a bloom filter in the diff that gets subtracted from
the bloom filter in the base file while reading?
If so, I don't think that works. You'd have to know what records are in a
particular page, calculate the bloom filter diff, and then use it. I don't
think that would be worth it.
> Add bloom filters to parquet statistics
> ---------------------------------------
>
> Key: PARQUET-41
> URL: https://issues.apache.org/jira/browse/PARQUET-41
> Project: Parquet
> Issue Type: New Feature
> Components: parquet-format, parquet-mr
> Reporter: Alex Levenson
> Assignee: Ferdinand Xu
> Labels: filter2
>
> For row groups with no dictionary, we could still produce a bloom filter.
> This could be very useful in filtering entire row groups.
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