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https://issues.apache.org/jira/browse/FLINK-3650?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15330511#comment-15330511
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ASF GitHub Bot commented on FLINK-3650:
---------------------------------------
Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/1856#discussion_r67049159
--- Diff:
flink-scala/src/test/scala/org/apache/flink/api/operator/MinByOperatorTest.scala
---
@@ -0,0 +1,184 @@
+/*
+ * 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.flink.api.operator
+
+import org.apache.flink.api.common.InvalidProgramException
+import org.apache.flink.api.common.typeinfo.BasicTypeInfo
+import org.apache.flink.api.java.tuple.{Tuple, Tuple5}
+import org.apache.flink.api.java.typeutils.TupleTypeInfo
+import org.apache.flink.api.scala.ExecutionEnvironment
+import org.apache.flink.api.scala._
+import org.junit.Test
+import org.junit.Assert;
+
+class MinByOperatorTest {
+ private val emptyTupleData = List[Tuple5[Integer, Long, String, Long,
Integer]]()
--- End diff --
Please use `(Int, Long, String, Long, Int)` instead of `Tuple5[Integer,
Long, String, Long, Integer]`.
`Integer` is also a Java type. In Scala you should use `Int` instead.
> Add maxBy/minBy to Scala DataSet API
> ------------------------------------
>
> Key: FLINK-3650
> URL: https://issues.apache.org/jira/browse/FLINK-3650
> Project: Flink
> Issue Type: Improvement
> Components: Java API, Scala API
> Affects Versions: 1.1.0
> Reporter: Till Rohrmann
> Assignee: ramkrishna.s.vasudevan
>
> The stable Java DataSet API contains the API calls {{maxBy}} and {{minBy}}.
> These methods are not supported by the Scala DataSet API. These methods
> should be added in order to have a consistent API.
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