Haohui Mai created HDFS-12232:
---------------------------------
Summary: ConfiguredFailoverProxyProvider caches DNS results
infinitely
Key: HDFS-12232
URL: https://issues.apache.org/jira/browse/HDFS-12232
Project: Hadoop HDFS
Issue Type: Bug
Components: ha, hdfs
Reporter: Haohui Mai
{{ConfiguredFailoverProxyProvider}} resolves the IP addresses and stores them
in the internal state. As a result when migrating the standby NN to a different
machine, it requires restarting all HDFS clients.
A better approach is to follow Java's policy of caching DNS names:
http://javaeesupportpatterns.blogspot.com/2011/03/java-dns-cache-reference-guide.html
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
---------------------------------------------------------------------
To unsubscribe, e-mail: hdfs-dev-unsubscr...@hadoop.apache.org
For additional commands, e-mail: hdfs-dev-h...@hadoop.apache.org
