Robert Metzger created FLINK-4824:
-------------------------------------
Summary: 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
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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