[ 
https://issues.apache.org/jira/browse/HBASE-10411?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13891964#comment-13891964
 ] 

Hadoop QA commented on HBASE-10411:
-----------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest 
attachment 
  
http://issues.apache.org/jira/secure/attachment/12627091/HBASE-10411-trunk-v01.patch
  against trunk revision .
  ATTACHMENT ID: 12627091

    {color:green}+1 @author{color}.  The patch does not contain any @author 
tags.

    {color:green}+0 tests included{color}.  The patch appears to be a 
documentation patch that doesn't require tests.

    {color:green}+1 hadoop1.0{color}.  The patch compiles against the hadoop 
1.0 profile.

    {color:green}+1 hadoop1.1{color}.  The patch compiles against the hadoop 
1.1 profile.

    {color:green}+1 javadoc{color}.  The javadoc tool did not generate any 
warning messages.

    {color:green}+1 javac{color}.  The applied patch does not increase the 
total number of javac compiler warnings.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new 
Findbugs (version 1.3.9) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase 
the total number of release audit warnings.

    {color:red}-1 lineLengths{color}.  The patch introduces the following lines 
longer than 100:
    +            <title>Secure Client Connect ([Caused by GSSException: No 
valid credentials provided (Mechanism level: Request is a replay (34) V 
PROCESS_TGS)])</title>
+This issue is caused by the Kerberos bugs for its replay_cache component, 
<link 
xlink:href="http://krbdev.mit.edu/rt/Ticket/Display.html?id=1201";>#1201</link> 
and <link 
xlink:href="http://krbdev.mit.edu/rt/Ticket/Display.html?id=5924";>#5924</link>, 
whom were talking about that the old version of krb5-server would 
false-positively blocks subsequent requests sent from a Principal.
+In this case, which means that the krb5-server would sometimes block the 
connections sent from one Client (one HTable instance with multi-threading 
connection instances for each regionserver); You would see such message 
'Request is a replay (34)' in your client log if you hit this bug. You can just 
ignore this message due to the implementation of HTable will retry 5 * 10 for 
each failed connection by default. The HTable will throw IOException if any 
connection to regionserver was failed after the retries, therefore, the user 
client code for HTable instance still can handle it further.
+Otherwise, you can pick a new version of krb5-server to solve this issue 
gracefully. We tested and  mitigated this issue in the environment: 
hbase-0.94.16 with krb5-server-1.10.3 on RHEL-6.4_GA-x86_64-10-Hourly2 on AWS, 
compared to the old environment: HBase-0.94.16 with krb5-server-1.6.1 on 
CentOS-5.3. Please refer to JIRA <link 
xlink:href="https://issues.apache.org/jira/browse/HBASE-10379";>HBASE-10379</link>
 for more details.

  {color:green}+1 site{color}.  The mvn site goal succeeds with this patch.

    {color:green}+1 core tests{color}.  The patch passed unit tests in .

Test results: 
https://builds.apache.org/job/PreCommit-HBASE-Build/8603//testReport/
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HBASE-Build/8603//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop2-compat.html
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HBASE-Build/8603//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-prefix-tree.html
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HBASE-Build/8603//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-client.html
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HBASE-Build/8603//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-common.html
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HBASE-Build/8603//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-protocol.html
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HBASE-Build/8603//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-server.html
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HBASE-Build/8603//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-examples.html
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HBASE-Build/8603//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-thrift.html
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HBASE-Build/8603//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop-compat.html
Console output: 
https://builds.apache.org/job/PreCommit-HBASE-Build/8603//console

This message is automatically generated.

> [Book] Add a kerberos 'request is a replay (34)' issue at troubleshooting 
> section
> ---------------------------------------------------------------------------------
>
>                 Key: HBASE-10411
>                 URL: https://issues.apache.org/jira/browse/HBASE-10411
>             Project: HBase
>          Issue Type: Improvement
>          Components: documentation, security
>            Reporter: takeshi.miao
>            Assignee: takeshi.miao
>            Priority: Minor
>         Attachments: HBASE-10411-trunk-v01.patch, HBASE-10411-v01.odt
>
>
> For kerberos 'request is a replay (34)' issue (HBASE-10379), adding it to the 
> troubleshooting section in HBase book



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