GitHub user Bcpoole opened a pull request:
https://github.com/apache/spark/pull/16863
Swamidass & Baldi Approximations
## What changes were proposed in this pull request?
Added functions to get the Swamidass & Baldi (2007) approximation for
number of items in a Bloom filter and the intersections of two filters. Added
an exception type IncompatibleUnionException mimicing
IncompatibleMergeException. As needed for the intersection approximation, there
is a function that create the union of two Bloom filters (no mutations).
## How was this patch tested?
Manual Tests
Please review http://spark.apache.org/contributing.html before opening a
pull request.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/Bcpoole/spark
approxItemsInBloomFilterIntersection
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/16863.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #16863
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commit 7a3ad46ff86bd3d2d47f6a56bace1a0c4fd171c8
Author: Bcpoole <brandoncpo...@gmail.com>
Date: 2017-02-09T01:11:07Z
Swamidass & Baldi approx. items in intersection of two Bloom filters. Also
function to create union (non-mutation) of two Bloom filters.
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