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Posted to common-dev@hadoop.apache.org by "Steve Vaughan (Jira)" <ji...@apache.org> on 2022/07/25 13:43:00 UTC

[jira] [Created] (HADOOP-18365) Updated addresses are still accessed using the old IP address

Steve Vaughan created HADOOP-18365:
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             Summary: Updated addresses are still accessed using the old IP address
                 Key: HADOOP-18365
                 URL: https://issues.apache.org/jira/browse/HADOOP-18365
             Project: Hadoop Common
          Issue Type: Improvement
          Components: common
         Environment: Demonstrated in a Kubernetes environment running Java 11.
            Reporter: Steve Vaughan


When the IPC Client recognizes that an IP address has changed, it updates the server field and logs a message:
Address change detected. Old: journalnode-1.journalnode.hdfs.svc.cluster.local/10.1.0.178:8485 New: journalnode-1.journalnode.hdfs.svc.cluster.local/10.1.0.182:8485
Although the change is detected, the client will continue to connect to the old IP address, resulting in repeated log messages.  This is seen in managed environments when JournalNode syncing is enabled and a JournalNode is restarted, with the remaining nodes in the set repeatedly logging this message when syncing to the restarted JournalNode.

The source of the problem is that the remoteId.address is not updated.



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