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Brahma Reddy Battula commented on HDFS-12990: --------------------------------------------- should be committed to branch-3.0 which is going to be 3.0.2.? > Change default NameNode RPC port back to 8020 > --------------------------------------------- > > Key: HDFS-12990 > URL: https://issues.apache.org/jira/browse/HDFS-12990 > Project: Hadoop HDFS > Issue Type: Task > Components: namenode > Affects Versions: 3.0.0 > Reporter: Xiao Chen > Assignee: Xiao Chen > Priority: Critical > Fix For: 3.0.1 > > Attachments: HDFS-12990.01.patch > > > In HDFS-9427 (HDFS should not default to ephemeral ports), we changed all > default ports to ephemeral ports, which is very appreciated by admin. As part > of that change, we also modified the NN RPC port from the famous 8020 to > 9820, to be closer to other ports changed there. > With more integration going on, it appears that all the other ephemeral port > changes are fine, but the NN RPC port change is painful for downstream on > migrating to Hadoop 3. Some examples include: > # Hive table locations pointing to hdfs://nn:port/dir > # Downstream minicluster unit tests that assumed 8020 > # Oozie workflows / downstream scripts that used 8020 > This isn't a problem for HA URLs, since that does not include the port > number. But considering the downstream impact, instead of requiring all of > them change their stuff, it would be a way better experience to leave the NN > port unchanged. This will benefit Hadoop 3 adoption and ease unnecessary > upgrade burdens. > It is of course incompatible, but giving 3.0.0 is just out, IMO it worths to > switch the port back. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org