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https://issues.apache.org/jira/browse/CRUNCH-215?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gabriel Reid resolved CRUNCH-215.
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Resolution: Fixed
Fix Version/s: 0.7.0
Pushed to master
> Add BloomFilterJoinStrategy
> ---------------------------
>
> Key: CRUNCH-215
> URL: https://issues.apache.org/jira/browse/CRUNCH-215
> Project: Crunch
> Issue Type: New Feature
> Reporter: Gabriel Reid
> Assignee: Gabriel Reid
> Fix For: 0.7.0
>
> Attachments: CRUNCH-215.patch
>
>
> Bloom filters can be very effective for pre-filtering one side of a join when
> one side of the join has a small subset of the keys of the other side (i.e.
> there are many keys on one side that will not be joined).
> The Bloom filter can be built up based on the keys of one side of the join
> (the side with fewer keys), and then can be applied as a filter to the other
> side of the join before it is sent through the shuffle and reduce phases.
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