kw2542 commented on pull request #14945:
URL: https://github.com/apache/beam/pull/14945#issuecomment-861924570


   Please fix the compilation error as well:
   
   `16:33:00 > Task :runners:samza:compileJava
   16:33:00 
/home/jenkins/jenkins-slave/workspace/beam_PreCommit_Java_Commit@2/src/runners/samza/src/main/java/org/apache/beam/runners/samza/renderer/PipelineJsonRenderer.java:52:
 error: [return.type.incompatible] incompatible types in return.
   16:33:00     return null;
   16:33:00            ^
   16:33:00   type of expression: null (NullType)
   16:33:00   method return type: @Initialized @NonNull String
   16:33:00 
/home/jenkins/jenkins-slave/workspace/beam_PreCommit_Java_Commit@2/src/runners/samza/src/main/java/org/apache/beam/runners/samza/renderer/PipelineJsonRenderer.java:74:
 error: [dereference.of.nullable] dereference of possibly-null reference 
node.getTransform()
   16:33:00         escapeString(fullName.isEmpty() ? OUTERMOST_NODE : 
node.getTransform().getName()));
   16:33:00                                                                     
        ^
   16:33:00 
/home/jenkins/jenkins-slave/workspace/beam_PreCommit_Java_Commit@2/src/runners/samza/src/main/java/org/apache/beam/runners/samza/renderer/PipelineJsonRenderer.java:103:
 error: [dereference.of.nullable] dereference of possibly-null reference 
node.getTransform()
   16:33:00     writeLine("  \"shortName\":\"%s\",", 
escapeString(node.getTransform().getName()));
   16:33:00                                                                     
   ^
   16:33:00 
/home/jenkins/jenkins-slave/workspace/beam_PreCommit_Java_Commit@2/src/runners/samza/src/main/java/org/apache/beam/runners/samza/renderer/PipelineJsonRenderer.java:116:
 error: [dereference.of.nullable] dereference of possibly-null reference 
node.getTransform()
   16:33:00               if 
(node.getTransform().getAdditionalInputs().containsKey(key)) {`


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