[jira] [Created] (FLINK-15394) in yarn mode, jobmanager fails to start in case of rest.port conflict.

["watters.wang (Jira)" <ji...@apache.org>]

watters.wang created FLINK-15394:
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             Summary: in yarn mode, jobmanager fails to start in case of rest.port conflict.
                 Key: FLINK-15394
                 URL: https://issues.apache.org/jira/browse/FLINK-15394
             Project: Flink
          Issue Type: Bug
          Components: Runtime / REST
    Affects Versions: 1.9.0
         Environment: a small yarn cluster with three node.
            Reporter: watters.wang


In flink 1.9, if rest.port is set in flink.yaml,  jobmanager will start failed in case of rest.port conflict in small cluster. 

in 1.7, that's ok .

 
{code:java}
//代码占位符
org.apache.flink.runtime.entrypoint.ClusterEntrypointException: Failed to initialize the cluster entrypoint YarnJobClusterEntrypoint.
	at org.apache.flink.runtime.entrypoint.ClusterEntrypoint.startCluster(ClusterEntrypoint.java:182)
	at org.apache.flink.runtime.entrypoint.ClusterEntrypoint.runClusterEntrypoint(ClusterEntrypoint.java:501)
	at org.apache.flink.yarn.entrypoint.YarnJobClusterEntrypoint.main(YarnJobClusterEntrypoint.java:102)
Caused by: org.apache.flink.util.FlinkException: Could not create the DispatcherResourceManagerComponent.
	at org.apache.flink.runtime.entrypoint.component.AbstractDispatcherResourceManagerComponentFactory.create(AbstractDispatcherResourceManagerComponentFactory.java:257)
	at org.apache.flink.runtime.entrypoint.ClusterEntrypoint.runCluster(ClusterEntrypoint.java:210)
	at org.apache.flink.runtime.entrypoint.ClusterEntrypoint.lambda$startCluster$0(ClusterEntrypoint.java:164)
	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:1754)
	at org.apache.flink.runtime.security.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41)
	at org.apache.flink.runtime.entrypoint.ClusterEntrypoint.startCluster(ClusterEntrypoint.java:163)
	... 2 more
Caused by: java.net.BindException: Could not start rest endpoint on any port in port range 8081
	at org.apache.flink.runtime.rest.RestServerEndpoint.start(RestServerEndpoint.java:219)
	at org.apache.flink.runtime.entrypoint.component.AbstractDispatcherResourceManagerComponentFactory.create(AbstractDispatcherResourceManagerComponentFactory.java:161)
	... 9 more
{code}



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