Hi Sampath, it is no longer possible to not start the rest server endpoint by setting rest.port to -1. If you do this, then the cluster won't start. The comment in the flink-conf.yaml holds only true for the legacy mode.
In non-HA setups we need the jobmanager.rpc.address to derive the hostname of the rest server. The jobmanager.rpc.port is no longer needed for the client but only for the other cluster components (TMs). When using the HA mode, then every address will be retrieved from ZooKeeper. I hope this clarifies things. Cheers, Till On Wed, Jun 20, 2018 at 9:24 AM Chesnay Schepler <ches...@apache.org> wrote: > I was worried this might be the case. > > The rest.port handling was simply copied from the legacy web-server, > which explicitly allowed shutting it down. > It may (I'm not entirely sure) also not be necessary for all deployment > modes; for example if the job is baked into the job/taskmanager images. > > I'm not quite sure whether the rpc address is actually required for the > REST job submission, or only since we still rely partly on some legacy > code (ClusterClient). Maybe Till (cc) knows the answer to that. > > > Adding on to this point you made - " the rpc address is still *required > *due > > to some technical implementations; it may be that you can set this to > some > > arbitrary value however." > > > > For job submission to happen successfully we should give specific rpc > > address and not any arbitrary value. If any arbitrary value is given the > > job submission fails with the following error - > > org.apache.flink.client.deployment.ClusterRetrieveException: Couldn't > > retrieve standalone cluster > > at > > > org.apache.flink.client.deployment.StandaloneClusterDescriptor.retrieve(StandaloneClusterDescriptor.java:51) > > at > > > org.apache.flink.client.deployment.StandaloneClusterDescriptor.retrieve(StandaloneClusterDescriptor.java:31) > > at > > org.apache.flink.client.cli.CliFrontend.runProgram(CliFrontend.java:249) > > at > org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:210) > > at > > > org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:1020) > > at > > > org.apache.flink.client.cli.CliFrontend.lambda$main$9(CliFrontend.java:1096) > > at > > > org.apache.flink.runtime.security.NoOpSecurityContext.runSecured(NoOpSecurityContext.java:30) > > at > > org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:1096) > > Caused by: java.net.UnknownHostException: > flinktest-flink-jobmanager1233445: > > Name or service not known > > (Random name flinktest-flink-jobmanager1233445) > > at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method) > > at > java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:928) > > at > > java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1323) > > at java.net.InetAddress.getAllByName0(InetAddress.java:1276) > > at java.net.InetAddress.getAllByName(InetAddress.java:1192) > > at java.net.InetAddress.getAllByName(InetAddress.java:1126) > > at java.net.InetAddress.getByName(InetAddress.java:1076) > > at > > > org.apache.flink.runtime.rpc.akka.AkkaRpcServiceUtils.getRpcUrl(AkkaRpcServiceUtils.java:171) > > at > > > org.apache.flink.runtime.rpc.akka.AkkaRpcServiceUtils.getRpcUrl(AkkaRpcServiceUtils.java:136) > > at > > > org.apache.flink.runtime.highavailability.HighAvailabilityServicesUtils.createHighAvailabilityServices(HighAvailabilityServicesUtils.java:83) > > at > > > org.apache.flink.client.program.ClusterClient.<init>(ClusterClient.java:158) > > at > > > org.apache.flink.client.program.rest.RestClusterClient.<init>(RestClusterClient.java:184) > > at > > > org.apache.flink.client.program.rest.RestClusterClient.<init>(RestClusterClient.java:157) > > at > > > org.apache.flink.client.deployment.StandaloneClusterDescriptor.retrieve(StandaloneClusterDescriptor.java:49) > > ... 7 more > > > > > > On Wed, Jun 20, 2018 at 11:18 AM, Sampath Bhat <sam414255p...@gmail.com> > > wrote: > > > >> Hi Chesnay > >> > >> If REST API (i.e. the web server) is mandatory for submitting jobs then > >> why is there an option to set rest.port to -1? I think it should be > >> mandatory to set some valid port for rest.port and make sure flink job > >> manager does not come up if valid port is not set for rest.port? Or else > >> there must be some way to submit jobs even if REST API (i.e. the web > >> server) is not instantiated. > >> > >> If jobmanger.rpc.address is not required for flink client then why is it > >> still looking for that property in flink-conf.yaml? Isn't it not a bug? > >> Because if we comment out the jobmanger.rpc.address and > jobmanger.rpc.port > >> then flink client will not be able to submit the job. > >> > >> > >> On Tue, Jun 19, 2018 at 5:49 PM, Chesnay Schepler <ches...@apache.org> > >> wrote: > >> > >>> In 1.5 we reworked the job-submission to go through the REST API > instead > >>> of akka. > >>> > >>> I believe the jobmanager rpc port shouldn't be necessary anymore, the > rpc > >>> address is still *required *due to some technical implementations; it > >>> may be that you can set this to some arbitrary value however. > >>> > >>> As a result the REST API (i.e. the web server) must be running in order > >>> to submit jobs. > >>> > >>> > >>> On 19.06.2018 14:12, Sampath Bhat wrote: > >>> > >>> Hello > >>> > >>> I'm using Flink 1.5.0 version and Flink CLI to submit jar to flink > >>> cluster. > >>> > >>> In flink 1.4.2 only job manager rpc address and job manager rpc port > were > >>> sufficient for flink client to connect to job manager and submit the > job. > >>> > >>> But in flink 1.5.0 the flink client additionally requires the > >>> rest.address and rest.port for submitting the job to job manager. What > is > >>> the advantage of this new method over the 1.4.2 method of submitting > job? > >>> > >>> Moreover if we make rest.port = -1 the web server will not be > >>> instantiated then how should we submit the job? > >>> > >>> Regards > >>> Sampath > >>> > >>> > >>> > >
