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https://issues.apache.org/jira/browse/FLINK-2214?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14588364#comment-14588364
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ASF GitHub Bot commented on FLINK-2214:
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GitHub user tillrohrmann opened a pull request:
https://github.com/apache/flink/pull/844
[FLINK-2214] [ml] Fixes prediction join operation and empirical risk join
operation of ALS by giving join hint
Fixes prediction join operation and empirical risk join operation of ALS by
giving join hint. The user factors and item factors matrices are now used as
the build side of the hash join.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/tillrohrmann/flink fixALS
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/844.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 #844
----
commit c7b3adce266d7d9df0fb5ce37bc096fa2825fdaf
Author: Till Rohrmann <trohrm...@apache.org>
Date: 2015-06-16T16:53:12Z
[FLINK-2214] [ml] Fixes prediction join operation and empirical risk join
operation of ALS by giving join hint
----
> ALS predict and empiricalRisk function can cause hash join function to exceed
> maximum number of recursions
> ----------------------------------------------------------------------------------------------------------
>
> Key: FLINK-2214
> URL: https://issues.apache.org/jira/browse/FLINK-2214
> Project: Flink
> Issue Type: Bug
> Components: Machine Learning Library
> Reporter: Till Rohrmann
> Priority: Minor
> Labels: ML
>
> Using the {{predict}} or {{empiricalRisk}} function of the {{ALS}} class can
> cause the Flink job to fail with a {{Hash join exceeded maximum number of
> recursions}} exceptions. This is due to a wrong build side for the hash join
> operation.
> This bug should be fixable by setting the correct join hints.
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