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https://issues.apache.org/jira/browse/ARROW-6243?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17171561#comment-17171561
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Neal Richardson commented on ARROW-6243:
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I don't believe they are serializable. There has been some discussion of this
on the mailing list recently:
https://lists.apache.org/thread.html/rb6613e1e0bd205a9e1979e99ee87a4b8ef6d2dc2e0e417c7abdea8a6%40%3Cdev.arrow.apache.org%3E
> [C++] Implement basic Filter expression classes
> -----------------------------------------------
>
> Key: ARROW-6243
> URL: https://issues.apache.org/jira/browse/ARROW-6243
> Project: Apache Arrow
> Issue Type: New Feature
> Components: C++
> Reporter: Francois Saint-Jacques
> Assignee: Ben Kietzman
> Priority: Major
> Labels: dataset, pull-request-available
> Fix For: 0.15.0
>
> Time Spent: 5h 40m
> Remaining Estimate: 0h
>
> This will draft the basic classes for creating boolean expressions that are
> passed to the DataSources/DataFragments for predicate push-down.
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