[ https://issues.apache.org/jira/browse/HADOOP-10941?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14741143#comment-14741143 ]
Steve Loughran commented on HADOOP-10941: ----------------------------------------- Looking at the code, I can't see how a null address comes in either; when the server is set up if the socket has no address, it switches to *Unknown*" ... otherwise the inet address value is used, which appears to be the numeric address. But it has happened —hasn't it? This could be a sign of something seriously wrong > Proxy user verification NPEs if remote host is unresolvable > ----------------------------------------------------------- > > Key: HADOOP-10941 > URL: https://issues.apache.org/jira/browse/HADOOP-10941 > Project: Hadoop Common > Issue Type: Bug > Components: ipc, security > Affects Versions: 2.5.0, 3.0.0 > Reporter: Daryn Sharp > Assignee: Benoy Antony > Priority: Critical > Labels: BB2015-05-TBR > Attachments: HADOOP-10941.patch > > > A null is passed to the impersonation providers for the remote address if it > is unresolvable. {{DefaultImpersationProvider}} will NPE, ipc will close the > connection immediately (correct behavior for such unexpected exceptions), > client fails on {{EOFException}}. -- This message was sent by Atlassian JIRA (v6.3.4#6332)