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https://issues.apache.org/jira/browse/BEAM-3110?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16267580#comment-16267580
 ] 

Xu Mingmin commented on BEAM-3110:
----------------------------------

Add more details on what's happening in the backend, as I see it again in 
another build.

The exact root cause is file 
{{META-INF/services/org.apache.beam.runners.core.construction.TransformPayloadTranslatorRegistrar}},
 it exists in several libraries(some are relocated/renamed). By default 
maven-shade use the first one and ignore others, but we need to merge them. So 
the steps I take are:
1). make sure {{beam-runners-direct-java}} is excluded when package as it 
relocates 
{{org.apache.beam.runners.core.construction.TransformPayloadTranslatorRegistrar}}
 which introduces additional chaos;
2). in you pom.xml, add these configuration:
{code}
<plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-shade-plugin</artifactId>
          <version>3.1.0</version>
          <executions>
            <execution>
            <id>servicesmerge</id>
              <phase>package</phase>
              <goals>
                <goal>shade</goal>
              </goals>
              <configuration>
                <transformers>
                  <transformer
                    
implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"
 />
                </transformers>
              </configuration>
              </execution>
              <execution>
              ....
              </execution>
          </executions>
        </plugin>
{code}

> The transform Read(UnboundedKafkaSource) is currently not supported
> -------------------------------------------------------------------
>
>                 Key: BEAM-3110
>                 URL: https://issues.apache.org/jira/browse/BEAM-3110
>             Project: Beam
>          Issue Type: Bug
>          Components: runner-flink
>    Affects Versions: 2.2.0, 2.3.0
>            Reporter: Xu Mingmin
>            Assignee: Aljoscha Krettek
>
> I see this issue when submitting a job to Flink cluster. It appears after 
> build {{2.2.0-20170912.083349-51}}.
> {code}
> org.apache.flink.client.program.ProgramInvocationException: The main method 
> caused an error.
>       at 
> org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:545)
>       at 
> org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:419)
>       at 
> org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:381)
>       at 
> org.apache.flink.client.CliFrontend.executeProgram(CliFrontend.java:838)
>       at org.apache.flink.client.CliFrontend.run(CliFrontend.java:259)
>       at 
> org.apache.flink.client.CliFrontend.parseParameters(CliFrontend.java:1086)
>       at org.apache.flink.client.CliFrontend$2.call(CliFrontend.java:1133)
>       at org.apache.flink.client.CliFrontend$2.call(CliFrontend.java:1130)
>       at 
> org.apache.flink.runtime.security.HadoopSecurityContext$1.run(HadoopSecurityContext.java:43)
>       at java.security.AccessController.doPrivileged(Native Method)
>       at javax.security.auth.Subject.doAs(Subject.java:415)
>       at 
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657)
>       at 
> org.apache.flink.runtime.security.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:40)
>       at org.apache.flink.client.CliFrontend.main(CliFrontend.java:1129)
> Caused by: java.lang.UnsupportedOperationException: The transform 
> Read(UnboundedKafkaSource) is currently not supported.
>       at 
> org.apache.beam.runners.flink.FlinkStreamingPipelineTranslator.visitPrimitiveTransform(FlinkStreamingPipelineTranslator.java:113)
>       at 
> org.apache.beam.sdk.runners.TransformHierarchy$Node.visit(TransformHierarchy.java:666)
>       at 
> org.apache.beam.sdk.runners.TransformHierarchy$Node.visit(TransformHierarchy.java:658)
>       at 
> org.apache.beam.sdk.runners.TransformHierarchy$Node.visit(TransformHierarchy.java:658)
>       at 
> org.apache.beam.sdk.runners.TransformHierarchy$Node.visit(TransformHierarchy.java:658)
>       at 
> org.apache.beam.sdk.runners.TransformHierarchy$Node.access$600(TransformHierarchy.java:311)
>       at 
> org.apache.beam.sdk.runners.TransformHierarchy.visit(TransformHierarchy.java:245)
>       at org.apache.beam.sdk.Pipeline.traverseTopologically(Pipeline.java:451)
>       at 
> org.apache.beam.runners.flink.FlinkPipelineTranslator.translate(FlinkPipelineTranslator.java:38)
>       at 
> org.apache.beam.runners.flink.FlinkStreamingPipelineTranslator.translate(FlinkStreamingPipelineTranslator.java:69)
>       at 
> org.apache.beam.runners.flink.FlinkPipelineExecutionEnvironment.translate(FlinkPipelineExecutionEnvironment.java:104)
>       at org.apache.beam.runners.flink.FlinkRunner.run(FlinkRunner.java:113)
>       at org.apache.beam.sdk.Pipeline.run(Pipeline.java:304)
>       at org.apache.beam.sdk.Pipeline.run(Pipeline.java:290)
> {code} 



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