Github user taishi-oss commented on the pull request:
https://github.com/apache/spark/pull/8534#issuecomment-140334039
I think [that
commit](https://github.com/taishi-oss/spark/commit/43c7ec6384e51105dedf3a53354b6a3732cc27b2)
is right.
but "git show" command results as follows.
I also think this is right.
```
[takahashi@phi spark]$ git show
v1.4.0:mllib/src/main/scala/org/apache/spark/ml/classification/DecisionTreeClassifier.scala
| grep "override def copy(extra: ParamMap): DecisionTreeClassifier =
defaultCopy(extra)"
[takahashi@phi spark]$ git show
v1.4.1:mllib/src/main/scala/org/apache/spark/ml/classification/DecisionTreeClassifier.scala
| grep "override def copy(extra: ParamMap): DecisionTreeClassifier =
defaultCopy(extra)"
override def copy(extra: ParamMap): DecisionTreeClassifier =
defaultCopy(extra)
[takahashi@phi spark]$ git show
v1.5.0:mllib/src/main/scala/org/apache/spark/ml/classification/DecisionTreeClassifier.scala
| grep "override def copy(extra: ParamMap): DecisionTreeClassifier =
defaultCopy(extra)"
override def copy(extra: ParamMap): DecisionTreeClassifier =
defaultCopy(extra)
```
Which should I believe?
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