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From "Josh Wills (JIRA)" <>
Subject [jira] [Commented] (CRUNCH-299) Support predicate pushdown for Parquet sources
Date Thu, 21 Nov 2013 19:33:38 GMT


Josh Wills commented on CRUNCH-299:

FYI: My (limited) understanding of this is that if you specify a subset of the Avro reader
schema to Parquet, Parquet will only read in those columns. Is that right? If so, I thought
we had that working for Trevni, and that we could verify/fix it for Parquet without too much

> Support predicate pushdown for Parquet sources
> ----------------------------------------------
>                 Key: CRUNCH-299
>                 URL:
>             Project: Crunch
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Tom White
>            Assignee: Josh Wills
> We should be able to push Crunch FilterFn down to a Parquet ColumnRecordFilter. 

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