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https://issues.apache.org/jira/browse/HADOOP-12082?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15580890#comment-15580890
 ] 

Hadoop QA commented on HADOOP-12082:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue}  0m 
19s{color} | {color:blue} Docker mode activated. {color} |
| {color:green}+1{color} | {color:green} @author {color} | {color:green}  0m  
0s{color} | {color:green} The patch does not contain any @author tags. {color} |
| {color:green}+1{color} | {color:green} test4tests {color} | {color:green}  0m 
 0s{color} | {color:green} The patch appears to include 4 new or modified test 
files. {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  1m 
35s{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  6m 
44s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  6m 
48s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  1m 
28s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  1m 
26s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  0m 
35s{color} | {color:green} trunk passed {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue}  0m  
0s{color} | {color:blue} Skipped patched modules with no Java source: 
hadoop-project {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  1m 
47s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 
10s{color} | {color:green} trunk passed {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 
18s{color} | {color:blue} Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  1m 
 5s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  6m 
48s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  6m 
48s{color} | {color:green} the patch passed {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange}  
1m 33s{color} | {color:orange} root: The patch generated 27 new + 151 unchanged 
- 6 fixed = 178 total (was 157) {color} |
| {color:red}-1{color} | {color:red} mvnsite {color} | {color:red}  0m 
21s{color} | {color:red} hadoop-auth in the patch failed. {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  0m 
47s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green}  0m 
 0s{color} | {color:green} The patch has no whitespace issues. {color} |
| {color:green}+1{color} | {color:green} xml {color} | {color:green}  0m  
2s{color} | {color:green} The patch has no ill-formed XML file. {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue}  0m  
0s{color} | {color:blue} Skipped patched modules with no Java source: 
hadoop-project {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  2m  
7s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 
20s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  0m 
15s{color} | {color:green} hadoop-project in the patch passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  3m 
35s{color} | {color:green} hadoop-auth in the patch passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  8m 
13s{color} | {color:green} hadoop-common in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 
28s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 73m 30s{color} | 
{color:black} {color} |
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|| Subsystem || Report/Notes ||
| Docker |  Image:yetus/hadoop:9560f25 |
| JIRA Issue | HADOOP-12082 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12833662/HADOOP-12082-003.patch
 |
| Optional Tests |  asflicense  compile  javac  javadoc  mvninstall  mvnsite  
unit  xml  findbugs  checkstyle  |
| uname | Linux da202271165f 3.13.0-36-lowlatency #63-Ubuntu SMP PREEMPT Wed 
Sep 3 21:56:12 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/hadoop/patchprocess/precommit/personality/provided.sh 
|
| git revision | trunk / 1f304b0 |
| Default Java | 1.8.0_101 |
| findbugs | v3.0.0 |
| checkstyle | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/10808/artifact/patchprocess/diff-checkstyle-root.txt
 |
| mvnsite | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/10808/artifact/patchprocess/patch-mvnsite-hadoop-common-project_hadoop-auth.txt
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/10808/testReport/ |
| modules | C: hadoop-project hadoop-common-project/hadoop-auth 
hadoop-common-project/hadoop-common U: . |
| Console output | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/10808/console |
| Powered by | Apache Yetus 0.4.0-SNAPSHOT   http://yetus.apache.org |


This message was automatically generated.



> Support multiple authentication schemes via AuthenticationFilter
> ----------------------------------------------------------------
>
>                 Key: HADOOP-12082
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12082
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: security
>    Affects Versions: 2.6.0
>            Reporter: Hrishikesh Gadre
>            Assignee: Hrishikesh Gadre
>         Attachments: HADOOP-12082-001.patch, HADOOP-12082-002.patch, 
> HADOOP-12082-003.patch, HADOOP-12082.patch, hadoop-ldap-auth-v2.patch, 
> hadoop-ldap-auth-v3.patch, hadoop-ldap-auth-v4.patch, 
> hadoop-ldap-auth-v5.patch, hadoop-ldap-auth-v6.patch, hadoop-ldap.patch, 
> multi-scheme-auth-support-poc.patch
>
>
> The requirement is to support LDAP based authentication scheme via Hadoop 
> AuthenticationFilter. HADOOP-9054 added a support to plug-in custom 
> authentication scheme (in addition to Kerberos) via 
> AltKerberosAuthenticationHandler class. But it is based on selecting the 
> authentication mechanism based on User-Agent HTTP header which does not 
> conform to HTTP protocol semantics.
> As per [RFC-2616|http://www.w3.org/Protocols/rfc2616/rfc2616.html]
> - HTTP protocol provides a simple challenge-response authentication mechanism 
> that can be used by a server to challenge a client request and by a client to 
> provide the necessary authentication information. 
> - This mechanism is initiated by server sending the 401 (Authenticate) 
> response with ‘WWW-Authenticate’ header which includes at least one challenge 
> that indicates the authentication scheme(s) and parameters applicable to the 
> Request-URI. 
> - In case server supports multiple authentication schemes, it may return 
> multiple challenges with a 401 (Authenticate) response, and each challenge 
> may use a different auth-scheme. 
> - A user agent MUST choose to use the strongest auth-scheme it understands 
> and request credentials from the user based upon that challenge.
> The existing Hadoop authentication filter implementation supports Kerberos 
> authentication scheme and uses ‘Negotiate’ as the challenge as part of 
> ‘WWW-Authenticate’ response header. As per the following documentation, 
> ‘Negotiate’ challenge scheme is only applicable to Kerberos (and Windows 
> NTLM) authentication schemes.
> [SPNEGO-based Kerberos and NTLM HTTP 
> Authentication|http://tools.ietf.org/html/rfc4559]
> [Understanding HTTP 
> Authentication|https://msdn.microsoft.com/en-us/library/ms789031%28v=vs.110%29.aspx]
> On the other hand for LDAP authentication, typically ‘Basic’ authentication 
> scheme is used (Note TLS is mandatory with Basic authentication scheme).
> http://httpd.apache.org/docs/trunk/mod/mod_authnz_ldap.html
> Hence for this feature, the idea would be to provide a custom implementation 
> of Hadoop AuthenticationHandler and Authenticator interfaces which would 
> support both schemes - Kerberos (via Negotiate auth challenge) and LDAP (via 
> Basic auth challenge). During the authentication phase, it would send both 
> the challenges and let client pick the appropriate one. If client responds 
> with an ‘Authorization’ header tagged with ‘Negotiate’ - it will use Kerberos 
> authentication. If client responds with an ‘Authorization’ header tagged with 
> ‘Basic’ - it will use LDAP authentication.
> Note - some HTTP clients (e.g. curl or Apache Http Java client) need to be 
> configured to use one scheme over the other e.g.
> - curl tool supports option to use either Kerberos (via --negotiate flag) or 
> username/password based authentication (via --basic and -u flags). 
> - Apache HttpClient library can be configured to use specific authentication 
> scheme.
> http://hc.apache.org/httpcomponents-client-ga/tutorial/html/authentication.html
> Typically web browsers automatically choose an authentication scheme based on 
> a notion of “strength” of security. e.g. take a look at the [design of Chrome 
> browser for HTTP 
> authentication|https://www.chromium.org/developers/design-documents/http-authentication]



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