diff --git a/core/src/main/scala/org/apache/spark/annotation/Since.scala b/core/src/main/scala/org/apache/spark/annotation/Since.scala new file mode 100644 index 0000000000000000000000000000000000000000..fa59393c22476cafb5eaf189c22f398291e37bb1 --- /dev/null +++ b/core/src/main/scala/org/apache/spark/annotation/Since.scala @@ -0,0 +1,28 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.apache.spark.annotation + +import scala.annotation.StaticAnnotation + +/** + * A Scala annotation that specifies the Spark version when a definition was added. + * Different from the `@since` tag in JavaDoc, this annotation does not require explicit JavaDoc and + * hence works for overridden methods that inherit API documentation directly from parents. + * The limitation is that it does not show up in the generated Java API documentation. + */ +private[spark] class Since(version: String) extends StaticAnnotation