Tsz Wo (Nicholas), SZE created HDFS-5338:
--------------------------------------------
Summary: Add a conf to disable hostname check in DN registration
Key: HDFS-5338
URL: https://issues.apache.org/jira/browse/HDFS-5338
Project: Hadoop HDFS
Issue Type: Improvement
Components: namenode
Reporter: Tsz Wo (Nicholas), SZE
Assignee: Tsz Wo (Nicholas), SZE
During DN registration, if the ip and the hostname in the DN InetAddress are
different, the DN will be disallowed to register, where the DN InetAddress was
obtained from the socket. It is a performance improvement added by HDFS-3990
to avoid unnecessary DNS resolutions.
We propose to add a conf property for disabling the check. Otherwise, clusters
without reverse DNS lookup support does not work.
--
This message was sent by Atlassian JIRA
(v6.1#6144)
