GitHub user joseph-torres opened a pull request:
https://github.com/apache/spark/pull/19327
[WIP] Implement stream-stream outer joins.
## What changes were proposed in this pull request?
Allow one-sided outer joins between two streams when a watermark is defined.
## How was this patch tested?
new unit tests
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/joseph-torres/spark outerjoin
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/19327.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 #19327
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commit 1dfb95d5b7dee86b45aa831278d3fa7a7dc1917f
Author: Jose Torres <j...@databricks.com>
Date: 2017-09-22T20:36:50Z
Implement stream-stream outer joins.
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