Xiangrui Meng created SPARK-5976:
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Summary: Factors returned by ALS do not have partitioners
associated.
Key: SPARK-5976
URL: https://issues.apache.org/jira/browse/SPARK-5976
Project: Spark
Issue Type: Bug
Components: ML, MLlib
Affects Versions: 1.3.0
Reporter: Xiangrui Meng
Assignee: Xiangrui Meng
Priority: Critical
The model trained by ALS requires partitioning information to do quick lookup
of a user/item factor for making recommendation on individual requests. In the
new implementation, we don't put partitioners with ALS, which would cause
performance regression.
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