Hi Curt, could you elaborate a bit more on your setup? Maybe, provide commands you used to deploy the jobs and the Flink/YARN logs. What's puzzling me is your statement about "two JobManagers spinning up" and "everything's working fine if two TaskManagers are running on different instances". - When talking about Flink applications, you're talking about application mode? - I have the feeling you're mixing up JobManager and TaskManager in your initial description. Could you clarify this? - Actually, each of the Flink components (JobManager and TaskManager) should run in its own YARN container. The way you describe it it sounds like Flink runs within one container?
Best, Matthias On Thu, Sep 23, 2021 at 5:14 PM Curt Buechter <tricksho...@gmail.com> wrote: > Thanks Robert, > But, no, the rest.bind-port is not set to 35485 in the configuration. > Other jobs use different ports, so it is getting set dynamically. > > > #============================================================================== > # Rest & web frontend > > #============================================================================== > > # The port to which the REST client connects to. If rest.bind-port has > # not been specified, then the server will bind to this port as well. > # > #rest.port: 8081 > > # The address to which the REST client will connect to > # > #rest.address: 0.0.0.0 > > # Port range for the REST and web server to bind to. > # > #rest.bind-port: 8080-8090 > > # The address that the REST & web server binds to > # > #rest.bind-address: 0.0.0.0 > > # Flag to specify whether job submission is enabled from the web-based > # runtime monitor. Uncomment to disable. > > #web.submit.enable: false > > > > On Wed, Sep 22, 2021 at 11:46 AM Curt Buechter <tricksho...@gmail.com> > wrote: > >> Hi, >> I'm getting an error that happens randomly when starting a flink >> application. >> >> For context, this is running in YARN on AWS. This application is one that >> converts from the Table API to the Stream API, so two flink >> applications/jobmanagers are trying to start up. I think what happens is >> that the rest api port is chosen, and is the same for both of the flink >> apps. If YARN chooses two different instances for the two task managers, >> they each work fine and start their rest api on the same port on their own >> respective machine. But, if YARN chooses the same instance for both job >> managers, they both try to start up the rest api on the same port on the >> same machine, and I get the error. >> >> Here is the error: >> >> 2021-09-22 15:47:27,724 ERROR >> org.apache.flink.runtime.entrypoint.ClusterEntrypoint [] - Could not >> start cluster entrypoint YarnJobClusterEntrypoint. >> org.apache.flink.runtime.entrypoint.ClusterEntrypointException: Failed to >> initialize the cluster entrypoint YarnJobClusterEntrypoint. >> at >> org.apache.flink.runtime.entrypoint.ClusterEntrypoint.startCluster(ClusterEntrypoint.java:212) >> ~[flink-dist_2.12-1.13.2.jar:1.13.2] >> at >> org.apache.flink.runtime.entrypoint.ClusterEntrypoint.runClusterEntrypoint(ClusterEntrypoint.java:600) >> [flink-dist_2.12-1.13.2.jar:1.13.2] >> at >> org.apache.flink.yarn.entrypoint.YarnJobClusterEntrypoint.main(YarnJobClusterEntrypoint.java:99) >> [flink-dist_2.12-1.13.2.jar:1.13.2] >> Caused by: org.apache.flink.util.FlinkException: Could not create the >> DispatcherResourceManagerComponent. >> at >> org.apache.flink.runtime.entrypoint.component.DefaultDispatcherResourceManagerComponentFactory.create(DefaultDispatcherResourceManagerComponentFactory.java:275) >> ~[flink-dist_2.12-1.13.2.jar:1.13.2] >> at >> org.apache.flink.runtime.entrypoint.ClusterEntrypoint.runCluster(ClusterEntrypoint.java:250) >> ~[flink-dist_2.12-1.13.2.jar:1.13.2] >> at >> org.apache.flink.runtime.entrypoint.ClusterEntrypoint.lambda$startCluster$1(ClusterEntrypoint.java:189) >> ~[flink-dist_2.12-1.13.2.jar:1.13.2] >> at java.security.AccessController.doPrivileged(Native Method) >> ~[?:1.8.0_282] >> at javax.security.auth.Subject.doAs(Subject.java:422) ~[?:1.8.0_282] >> at >> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1730) >> ~[hadoop-common-3.2.1-amzn-3.jar:?] >> at >> org.apache.flink.runtime.security.contexts.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41) >> ~[flink-dist_2.12-1.13.2.jar:1.13.2] >> at >> org.apache.flink.runtime.entrypoint.ClusterEntrypoint.startCluster(ClusterEntrypoint.java:186) >> ~[flink-dist_2.12-1.13.2.jar:1.13.2] >> ... 2 more >> Caused by: java.net.BindException: Could not start rest endpoint on any port >> in port range 35485 >> at >> org.apache.flink.runtime.rest.RestServerEndpoint.start(RestServerEndpoint.java:234) >> ~[flink-dist_2.12-1.13.2.jar:1.13.2] >> at >> org.apache.flink.runtime.entrypoint.component.DefaultDispatcherResourceManagerComponentFactory.create(DefaultDispatcherResourceManagerComponentFactory.java:172) >> ~[flink-dist_2.12-1.13.2.jar:1.13.2] >> at >> org.apache.flink.runtime.entrypoint.ClusterEntrypoint.runCluster(ClusterEntrypoint.java:250) >> ~[flink-dist_2.12-1.13.2.jar:1.13.2] >> at >> org.apache.flink.runtime.entrypoint.ClusterEntrypoint.lambda$startCluster$1(ClusterEntrypoint.java:189) >> ~[flink-dist_2.12-1.13.2.jar:1.13.2] >> at java.security.AccessController.doPrivileged(Native Method) >> ~[?:1.8.0_282] >> at javax.security.auth.Subject.doAs(Subject.java:422) ~[?:1.8.0_282] >> at >> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1730) >> ~[hadoop-common-3.2.1-amzn-3.jar:?] >> at >> org.apache.flink.runtime.security.contexts.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41) >> ~[flink-dist_2.12-1.13.2.jar:1.13.2] >> at >> org.apache.flink.runtime.entrypoint.ClusterEntrypoint.startCluster(ClusterEntrypoint.java:186) >> ~[flink-dist_2.12-1.13.2.jar:1.13.2] >> ... 2 more >> >> >> And, here is part of the log from the other job manager, which successfully >> started its rest api on the same port, just a few seconds earlier: >> >> >> 2021-09-22 15:47:20,690 INFO >> org.apache.flink.runtime.jobmaster.MiniDispatcherRestEndpoint [] - Rest >> endpoint listening at ip-10-1-2-137.ec2.internal:35485 >> 2021-09-22 15:47:20,691 INFO >> org.apache.flink.runtime.jobmaster.MiniDispatcherRestEndpoint [] - >> http://ip-10-1-2-137.ec2.internal:35485 was granted leadership with >> leaderSessionID=00000000-0000-0000-0000-000000000000 >> 2021-09-22 15:47:20,692 INFO >> org.apache.flink.runtime.jobmaster.MiniDispatcherRestEndpoint [] - Web >> frontend listening at http://ip-10-1-2-137.ec2.internal:35485. >> >> >> >> Do you know of any configuration that would assist with this? I thought >> about rest.bind-port, but the rest port already seems to be chosen >> dynamically. My config file has that setting commented out. >> >> >> Thanks >> >> >>
