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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-4824) CliFrontend shows misleading error message when main() method returns before env.execute()
Date Mon, 24 Oct 2016 15:19:58 GMT

    [ https://issues.apache.org/jira/browse/FLINK-4824?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15602286#comment-15602286
] 

ASF GitHub Bot commented on FLINK-4824:
---------------------------------------

Github user asfgit closed the pull request at:

    https://github.com/apache/flink/pull/2662


> CliFrontend shows misleading error message when main() method returns before env.execute()
> ------------------------------------------------------------------------------------------
>
>                 Key: FLINK-4824
>                 URL: https://issues.apache.org/jira/browse/FLINK-4824
>             Project: Flink
>          Issue Type: Bug
>          Components: Client
>    Affects Versions: 1.2.0
>            Reporter: Robert Metzger
>            Assignee: Greg Hogan
>
> While testing Flink by running the {{./examples/streaming/SocketWindowWordCount.jar}}
example, I got the following error message:
> {code}
> ./bin/flink run ./examples/streaming/SocketWindowWordCount.jar 
> Cluster configuration: Standalone cluster with JobManager at /127.0.0.1:6123
> Using address 127.0.0.1:6123 to connect to JobManager.
> JobManager web interface address http://127.0.0.1:8081
> Starting execution of program
> No port specified. Please run 'SocketWindowWordCount --port <port>', where port
is the address of the text server
> To start a simple text server, run 'netcat -l <port>' and type the input text into
the command line
> ------------------------------------------------------------
>  The program finished with the following exception:
> org.apache.flink.client.program.ProgramInvocationException: The program didn't contain
Flink jobs. Perhaps you forgot to call execute() on the execution environment.
> 	at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:324)
> 	at org.apache.flink.client.CliFrontend.executeProgram(CliFrontend.java:774)
> 	at org.apache.flink.client.CliFrontend.run(CliFrontend.java:250)
> 	at org.apache.flink.client.CliFrontend.parseParameters(CliFrontend.java:985)
> 	at org.apache.flink.client.CliFrontend$2.run(CliFrontend.java:1032)
> 	at org.apache.flink.client.CliFrontend$2.run(CliFrontend.java:1029)
> 	at org.apache.flink.runtime.security.SecurityContext$1.run(SecurityContext.java:82)
> 	at java.security.AccessController.doPrivileged(Native Method)
> 	at javax.security.auth.Subject.doAs(Subject.java:422)
> 	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1548)
> 	at org.apache.flink.runtime.security.SecurityContext.runSecured(SecurityContext.java:79)
> 	at org.apache.flink.client.CliFrontend.main(CliFrontend.java:1029)
> {code}
> I think the error message is misleading, because I tried executing a valid Flink job.



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