[
https://issues.apache.org/jira/browse/HADOOP-10078?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13926108#comment-13926108
]
Tsz Wo Nicholas Sze commented on HADOOP-10078:
----------------------------------------------
I filed HADOOP-10398 for fixing the problem Bowen reported.
> KerberosAuthenticator always does SPNEGO
> ----------------------------------------
>
> Key: HADOOP-10078
> URL: https://issues.apache.org/jira/browse/HADOOP-10078
> Project: Hadoop Common
> Issue Type: Bug
> Components: security
> Affects Versions: 2.0.3-alpha
> Reporter: Robert Kanter
> Assignee: Robert Kanter
> Priority: Minor
> Fix For: 2.3.0
>
> Attachments: HADOOP-10078.patch
>
>
> HADOOP-8883 made this change to {{KerberosAuthenticator}}
> {code:java}
> @@ -158,7 +158,7 @@ public class KerberosAuthenticator implements
> Authenticator {
> conn.setRequestMethod(AUTH_HTTP_METHOD);
> conn.connect();
>
> - if (conn.getResponseCode() == HttpURLConnection.HTTP_OK) {
> + if (conn.getRequestProperty(AUTHORIZATION) != null &&
> conn.getResponseCode() == HttpURLConnection.HTTP_OK) {
> LOG.debug("JDK performed authentication on our behalf.");
> // If the JDK already did the SPNEGO back-and-forth for
> // us, just pull out the token.
> {code}
> to fix OOZIE-1010. However, as [~aklochkov] pointed out recently, this
> inadvertently made the if statement always false because it turns out that
> the JDK excludes some headers, including the "Authorization" one that we're
> checking (see discussion
> [here|https://issues.apache.org/jira/browse/HADOOP-8883?focusedCommentId=13807596&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13807596]).
> This means that it was always either calling {{doSpnegoSequence(token);}}
> or {{getFallBackAuthenticator().authenticate(url, token);}}, which is
> actually the old behavior that existed before HADOOP-8855 changed it in the
> first place.
> In any case, I tried removing the "Authorization" check and Oozie still works
> with and without Kerberos; the NPE reported in OOZIE-1010 has since been
> properly fixed due as a side effect for a similar issue in OOZIE-1368.
--
This message was sent by Atlassian JIRA
(v6.2#6252)
