Jason Lowe created HADOOP-12125: ----------------------------------- Summary: Retrying UnknownHostException on a proxy does not actually retry hostname resolution Key: HADOOP-12125 URL: https://issues.apache.org/jira/browse/HADOOP-12125 Project: Hadoop Common Issue Type: Bug Components: ipc Reporter: Jason Lowe
When RetryInvocationHandler attempts to retry an UnknownHostException the hostname fails to be resolved again. The InetSocketAddress in the ConnectionId has cached the fact that the hostname is unresolvable, and when the proxy tries to setup a new Connection object with that ConnectionId it checks if the (cached) resolution result is unresolved and immediately throws. The end result is we sleep and retry for no benefit. The hostname resolution is never attempted again. -- This message was sent by Atlassian JIRA (v6.3.4#6332)