GitHub user techaddict opened a pull request:
https://github.com/apache/spark/pull/15809
[SPARK-18268] ALS.run fail with better message if ratings is empty rdd
## What changes were proposed in this pull request?
ALS.run fail with better message if ratings is empty rdd
ALS.train and ALS.trainImplicit are also affected
## How was this patch tested?
existing tests
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/techaddict/spark SPARK-18268
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/15809.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 #15809
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commit 8080583922dc8f274d559ec3ea985d1bc9d171b9
Author: Sandeep Singh <sand...@techaddict.me>
Date: 2016-11-08T15:22:49Z
[SPARK-18268] ALS.run fail with better message if ratings is empty rdd
ALS.train and ALS.trainImplicit are also affected
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