yuhao yang created SPARK-20062:
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Summary: Inconsistent checking on ML estimator/model copy in the
unit tests.
Key: SPARK-20062
URL: https://issues.apache.org/jira/browse/SPARK-20062
Project: Spark
Issue Type: Test
Components: ML
Affects Versions: 2.1.0
Reporter: yuhao yang
Priority: Minor
Currently {code}
// copied model must have the same parent.
MLTestingUtils.checkCopy(model)
{code}
is missing from many unit tests in ml (only 6 appearances in ml.feature). And
even for those with the check, we don't have a consistent place for them and
they got scattered among different unit tests. Perhaps that's the reason that
the check is often forgotten for new features.
Possible options:
1. put it together with save/load
2. put it in the default parameter check (but not all algorithms has this
check).
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