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From "Nikolaas Steenbergen (JIRA)" <j...@apache.org>
Subject [jira] [Created] (FLINK-3701) Cant call execute after first execution
Date Tue, 05 Apr 2016 11:55:25 GMT
Nikolaas Steenbergen created FLINK-3701:
-------------------------------------------

             Summary: Cant call execute after first execution
                 Key: FLINK-3701
                 URL: https://issues.apache.org/jira/browse/FLINK-3701
             Project: Flink
          Issue Type: Bug
          Components: Scala Shell
            Reporter: Nikolaas Steenbergen


in version 1.0 this works:
~~~scala
Scala-Flink> var b = env.fromElements("a","b")
Scala-Flink> b.print
Scala-Flink> var c = env.fromElements("c","d")
Scala-Flink> c.print
~~~

in the current master (after c.print) this leads to :
~~~
java.lang.NullPointerException
	at org.apache.flink.api.java.ExecutionEnvironment.createProgramPlan(ExecutionEnvironment.java:1031)
	at org.apache.flink.api.java.ExecutionEnvironment.createProgramPlan(ExecutionEnvironment.java:961)
	at org.apache.flink.api.java.ScalaShellRemoteEnvironment.execute(ScalaShellRemoteEnvironment.java:70)
	at org.apache.flink.api.java.ExecutionEnvironment.execute(ExecutionEnvironment.java:855)
	at org.apache.flink.api.java.DataSet.collect(DataSet.java:410)
	at org.apache.flink.api.java.DataSet.print(DataSet.java:1605)
	at org.apache.flink.api.scala.DataSet.print(DataSet.scala:1615)
	at .<init>(<console>:56)
	at .<clinit>(<console>)
	at .<init>(<console>:7)
	at .<clinit>(<console>)
	at $print(<console>)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at scala.tools.nsc.interpreter.IMain$ReadEvalPrint.call(IMain.scala:734)
	at scala.tools.nsc.interpreter.IMain$Request.loadAndRun(IMain.scala:983)
	at scala.tools.nsc.interpreter.IMain.loadAndRunReq$1(IMain.scala:573)
	at scala.tools.nsc.interpreter.IMain.interpret(IMain.scala:604)
	at scala.tools.nsc.interpreter.IMain.interpret(IMain.scala:568)
	at scala.tools.nsc.interpreter.ILoop.reallyInterpret$1(ILoop.scala:760)
	at scala.tools.nsc.interpreter.ILoop.interpretStartingWith(ILoop.scala:805)
	at scala.tools.nsc.interpreter.ILoop.command(ILoop.scala:717)
	at scala.tools.nsc.interpreter.ILoop.processLine$1(ILoop.scala:581)
	at scala.tools.nsc.interpreter.ILoop.innerLoop$1(ILoop.scala:588)
	at scala.tools.nsc.interpreter.ILoop.loop(ILoop.scala:591)
	at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply$mcZ$sp(ILoop.scala:882)
	at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply(ILoop.scala:837)
	at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply(ILoop.scala:837)
	at scala.tools.nsc.util.ScalaClassLoader$.savingContextLoader(ScalaClassLoader.scala:135)
	at scala.tools.nsc.interpreter.ILoop.process(ILoop.scala:837)
	at org.apache.flink.api.scala.FlinkShell$.startShell(FlinkShell.scala:199)
	at org.apache.flink.api.scala.FlinkShell$.main(FlinkShell.scala:127)
	at org.apache.flink.api.scala.FlinkShell.main(FlinkShell.scala)
~~~




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