wanglijie95 commented on a change in pull request #18023:
URL: https://github.com/apache/flink/pull/18023#discussion_r770172671
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File path:
flink-runtime/src/main/java/org/apache/flink/runtime/executiongraph/ExecutionJobVertex.java
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@@ -307,13 +323,21 @@ public JobVertexID getJobVertexId() {
@Override
public ExecutionVertex[] getTaskVertices() {
+ if (taskVertices == null) {
Review comment:
It is not for unit testing. The REST API calls this method when the job
vertex is not initialized. So we just print log instead of throw an exception
here. BTW, the log here should be changed to DEBUG.
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