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ASF GitHub Bot commented on FLINK-2613: --------------------------------------- Github user chiwanpark commented on a diff in the pull request: https://github.com/apache/flink/pull/1106#discussion_r41519895 --- Diff: flink-staging/flink-scala-shell/src/test/scala/org/apache/flink/api/scala/ScalaShellLocalStartupITCase.scala --- @@ -0,0 +1,60 @@ +/* + * 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.scala + +import java.io._ + +import org.junit.runner.RunWith +import org.scalatest.{Matchers, FunSuite} +import org.scalatest.junit.JUnitRunner + + +@RunWith(classOf[JUnitRunner]) +class ScalaShellLocalStartupITCase extends FunSuite with Matchers { + + /** + * tests flink shell with local setup through startup script in bin folder + */ + test("start flink scala shell with local cluster") { + + val input: String = "val els = env.fromElements(\"a\",\"b\");\n" + "els.print\nError\n:q\n" + val in: BufferedReader = new BufferedReader(new StringReader(input + "\n")) + val out: StringWriter = new StringWriter + val baos: ByteArrayOutputStream = new ByteArrayOutputStream + val oldOut: PrintStream = System.out + System.setOut(new PrintStream(baos)) + val args: Array[String] = Array("local") + + //start flink scala shell + FlinkShell.bufferedReader = Some(in); + FlinkShell.main(args) + + baos.flush --- End diff -- Please add parenthesis after `flush`. > Print usage information for Scala Shell > --------------------------------------- > > Key: FLINK-2613 > URL: https://issues.apache.org/jira/browse/FLINK-2613 > Project: Flink > Issue Type: Improvement > Components: Scala Shell > Affects Versions: 0.10 > Reporter: Maximilian Michels > Assignee: Nikolaas Steenbergen > Priority: Minor > Labels: starter > Fix For: 0.10 > > > The Scala Shell startup script starts a {{FlinkMiniCluster}} by default if > invoked with no arguments. > We should add a {{--help}} or {{-h}} option to make it easier for people to > find out how to configure remote execution. Alternatively, we could print a > notice on the local startup explaining how to start the shell in remote mode. -- This message was sent by Atlassian JIRA (v6.3.4#6332)