Steve Vaughan created HDFS-16685: ------------------------------------ Summary: DataNode registration fails because getHostName returns an IP address Key: HDFS-16685 URL: https://issues.apache.org/jira/browse/HDFS-16685 Project: Hadoop HDFS Issue Type: Improvement Components: namenode Environment: Run in Kubernetes using Java 11. Reporter: Steve Vaughan
The call to dnAddress.getHostName() can return an IP address encoded as a string, which is then rejected because unresolved addresses can result in performance impacts due to repetitive DNS lookups later. We can detect when this situation occurs, and perform a DNS reverse name lookup to fix the issue. Bouncing a DataNode in a managed environment results in a new IP address allocation, and the new instance fails to register with the NameNode. -- This message was sent by Atlassian Jira (v8.20.10#820010) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org