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Vinod Kumar Vavilapalli commented on HADOOP-15518: -------------------------------------------------- bq. I have changed getUserPrincipal to getRemoteUser and this change seems working fine. That was my first solution too. [~kminder], would that work? > Authentication filter calling handler after request already authenticated > ------------------------------------------------------------------------- > > Key: HADOOP-15518 > URL: https://issues.apache.org/jira/browse/HADOOP-15518 > Project: Hadoop Common > Issue Type: Bug > Components: security > Affects Versions: 2.7.1 > Reporter: Kevin Minder > Assignee: Kevin Minder > Priority: Major > Attachments: HADOOP-15518-001.patch > > > The hadoop-auth AuthenticationFilter will invoke its handler even if a prior > successful authentication has occurred in the current request. This > primarily affects situations where multiple authentication mechanism has been > configured. For example when core-site.xml's has > hadoop.http.authentication.type=kerberos and yarn-site.xml has > yarn.timeline-service.http-authentication.type=kerberos the result is an > attempt to perform two Kerberos authentications for the same request. This > in turn results in Kerberos triggering a replay attack detection. The > javadocs for AuthenticationHandler > ([https://github.com/apache/hadoop/blob/trunk/hadoop-common-project/hadoop-auth/src/main/java/org/apache/hadoop/security/authentication/server/AuthenticationHandler.java)] > indicate for the authenticate method that > {quote}This method is invoked by the AuthenticationFilter only if the HTTP > client request is not yet authenticated. > {quote} > This does not appear to be the case in practice. > I've create a patch and tested on a limited number of functional use cases > (e.g. the timeline-service issue noted above). If there is general agreement > that the change is valid I'll add unit tests to the patch. > -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org