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-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org