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https://issues.apache.org/jira/browse/SPARK-7751?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15050289#comment-15050289
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Apache Spark commented on SPARK-7751:
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User 'petz2000' has created a pull request for this issue:
https://github.com/apache/spark/pull/7370
> Add @Since annotation to stable and experimental methods in MLlib
> -----------------------------------------------------------------
>
> Key: SPARK-7751
> URL: https://issues.apache.org/jira/browse/SPARK-7751
> Project: Spark
> Issue Type: Umbrella
> Components: Documentation, MLlib
> Reporter: Xiangrui Meng
> Assignee: Xiangrui Meng
> Priority: Minor
> Labels: starter
>
> This is useful to check whether a feature exists in some version of Spark.
> This is an umbrella JIRA to track the progress. We want to have -@since tag-
> @Since annotation for both stable (those without any
> Experimental/DeveloperApi/AlphaComponent annotations) and experimental
> methods in MLlib:
> (Do NOT tag private or package private classes or methods, nor local
> variables and methods.)
> * an example PR for Scala: https://github.com/apache/spark/pull/8309
> We need to dig the history of git commit to figure out what was the Spark
> version when a method was first introduced. Take `NaiveBayes.setModelType` as
> an example. We can grep `def setModelType` at different version git tags.
> {code}
> meng@xm:~/src/spark
> $ git show
> v1.3.0:mllib/src/main/scala/org/apache/spark/mllib/classification/NaiveBayes.scala
> | grep "def setModelType"
> meng@xm:~/src/spark
> $ git show
> v1.4.0:mllib/src/main/scala/org/apache/spark/mllib/classification/NaiveBayes.scala
> | grep "def setModelType"
> def setModelType(modelType: String): NaiveBayes = {
> {code}
> If there are better ways, please let us know.
> We cannot add all -@since tags- @Since annotation in a single PR, which is
> hard to review. So we made some subtasks for each package, for example
> `org.apache.spark.classification`. Feel free to add more sub-tasks for Python
> and the `spark.ml` package.
> Plan:
> 1. In 1.5, we try to add @Since annotation to all stable/experimental methods
> under `spark.mllib`.
> 2. Starting from 1.6, we require @Since annotation in all new PRs.
> 3. In 1.6, we try to add @SInce annotation to all stable/experimental methods
> under `spark.ml`, `pyspark.mllib`, and `pyspark.ml`.
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