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Posted to common-issues@hadoop.apache.org by "Konstantin Shvachko (JIRA)" <ji...@apache.org> on 2018/03/16 02:11:00 UTC
[jira] [Commented] (HADOOP-14687) AuthenticatedURL will reuse
bad/expired session cookies
[ https://issues.apache.org/jira/browse/HADOOP-14687?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16401388#comment-16401388 ]
Konstantin Shvachko commented on HADOOP-14687:
----------------------------------------------
Just heads up here. The revert of HADOOP-13119 removed one test {{testAuthenticationWithProxyUser()}} introduced here.
You might want to reinstate it somewhere.
> AuthenticatedURL will reuse bad/expired session cookies
> -------------------------------------------------------
>
> Key: HADOOP-14687
> URL: https://issues.apache.org/jira/browse/HADOOP-14687
> Project: Hadoop Common
> Issue Type: Bug
> Components: common
> Affects Versions: 2.6.0
> Reporter: Daryn Sharp
> Assignee: Daryn Sharp
> Priority: Critical
> Fix For: 2.9.0, 3.0.0-beta1, 2.8.2
>
> Attachments: HADOOP-14687.2.trunk.patch, HADOOP-14687.branch-2.8.patch, HADOOP-14687.trunk.patch
>
>
> AuthenticatedURL with kerberos was designed to perform spnego, then use a session cookie to avoid renegotiation overhead. Unfortunately the client will continue to use a cookie after it expires. Every request elicits a 401, connection closes (despite keepalive because 401 is an "error"), TGS is obtained, connection re-opened, re-requests with TGS, repeat cycle. This places a strain on the kdc and creates lots of time_wait sockets.
>
> The main problem is unbeknownst to the auth url, the JDK transparently does spnego. The server issues a new cookie but the auth url doesn't scrape the cookie from the response because it doesn't know the JDK re-authenticated.
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