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https://issues.apache.org/jira/browse/FLINK-4418?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15439379#comment-15439379
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ASF GitHub Bot commented on FLINK-4418:
---------------------------------------
Github user asfgit closed the pull request at:
https://github.com/apache/flink/pull/2383
> ClusterClient/ConnectionUtils#findConnectingAddress fails immediately if
> InetAddress.getLocalHost throws exception
> ------------------------------------------------------------------------------------------------------------------
>
> Key: FLINK-4418
> URL: https://issues.apache.org/jira/browse/FLINK-4418
> Project: Flink
> Issue Type: Bug
> Components: Client
> Affects Versions: 1.1.0
> Reporter: Shannon Carey
> Assignee: Shannon Carey
>
> When attempting to connect to a cluster with a ClusterClient, if the
> machine's hostname is not resolvable to an IP, an exception is thrown
> preventing success.
> This is the case if, for example, the hostname is not present & mapped to a
> local IP in /etc/hosts.
> The exception is below. I suggest that findAddressUsingStrategy() should
> catch java.net.UnknownHostException thrown by InetAddress.getLocalHost() and
> return null, allowing alternative strategies to be attempted by
> findConnectingAddress(). I will open a PR to this effect. Ideally this could
> be included in both 1.2 and 1.1.2.
> In the stack trace below, "ip-10-2-64-47" is the internal host name of an AWS
> EC2 instance.
> {code}
> 21:11:35 org.apache.flink.client.program.ProgramInvocationException: Failed
> to retrieve the JobManager gateway.
> 21:11:35 at
> org.apache.flink.client.program.ClusterClient.runDetached(ClusterClient.java:430)
> 21:11:35 at
> org.apache.flink.client.program.StandaloneClusterClient.submitJob(StandaloneClusterClient.java:90)
> 21:11:35 at
> org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:389)
> 21:11:35 at
> org.apache.flink.client.program.DetachedEnvironment.finalizeExecute(DetachedEnvironment.java:75)
> 21:11:35 at
> org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:334)
> 21:11:35 at
> com.expedia.www.flink.job.scheduler.FlinkJobSubmitter.get(FlinkJobSubmitter.java:81)
> 21:11:35 at
> com.expedia.www.flink.job.scheduler.streaming.StreamingJobManager.run(StreamingJobManager.java:105)
> 21:11:35 at
> com.expedia.www.flink.job.scheduler.JobScheduler.runStreamingApp(JobScheduler.java:69)
> 21:11:35 at
> com.expedia.www.flink.job.scheduler.JobScheduler.main(JobScheduler.java:34)
> 21:11:35 Caused by: java.lang.RuntimeException: Failed to resolve JobManager
> address at /10.2.89.80:43126
> 21:11:35 at
> org.apache.flink.client.program.ClusterClient$LazyActorSystemLoader.get(ClusterClient.java:189)
> 21:11:35 at
> org.apache.flink.client.program.ClusterClient.getJobManagerGateway(ClusterClient.java:649)
> 21:11:35 at
> org.apache.flink.client.program.ClusterClient.runDetached(ClusterClient.java:428)
> 21:11:35 ... 8 more
> 21:11:35 Caused by: java.net.UnknownHostException: ip-10-2-64-47:
> ip-10-2-64-47: unknown error
> 21:11:35 at java.net.InetAddress.getLocalHost(InetAddress.java:1505)
> 21:11:35 at
> org.apache.flink.runtime.net.ConnectionUtils.findAddressUsingStrategy(ConnectionUtils.java:232)
> 21:11:35 at
> org.apache.flink.runtime.net.ConnectionUtils.findConnectingAddress(ConnectionUtils.java:123)
> 21:11:35 at
> org.apache.flink.client.program.ClusterClient$LazyActorSystemLoader.get(ClusterClient.java:187)
> 21:11:35 ... 10 more
> 21:11:35 Caused by: java.net.UnknownHostException: ip-10-2-64-47: unknown
> error
> 21:11:35 at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
> 21:11:35 at
> java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:928)
> 21:11:35 at
> java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1323)
> 21:11:35 at java.net.InetAddress.getLocalHost(InetAddress.java:1500)
> 21:11:35 ... 13 more
> {code}
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