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Posted to common-issues@hadoop.apache.org by "Hadoop QA (JIRA)" <ji...@apache.org> on 2010/07/15 20:09:50 UTC
[jira] Commented: (HADOOP-6632) Support for using different
Kerberos keys for different instances of Hadoop services
[ https://issues.apache.org/jira/browse/HADOOP-6632?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12888873#action_12888873 ]
Hadoop QA commented on HADOOP-6632:
-----------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12449571/c6632-05.patch
against trunk revision 964134.
+1 @author. The patch does not contain any @author tags.
+1 tests included. The patch appears to include 6 new or modified tests.
-1 javadoc. The javadoc tool appears to have generated 1 warning messages.
+1 javac. The applied patch does not increase the total number of javac compiler warnings.
+1 findbugs. The patch does not introduce any new Findbugs warnings.
+1 release audit. The applied patch does not increase the total number of release audit warnings.
+1 core tests. The patch passed core unit tests.
+1 contrib tests. The patch passed contrib unit tests.
Test results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-h4.grid.sp2.yahoo.net/615/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-h4.grid.sp2.yahoo.net/615/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-h4.grid.sp2.yahoo.net/615/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-h4.grid.sp2.yahoo.net/615/console
This message is automatically generated.
> Support for using different Kerberos keys for different instances of Hadoop services
> ------------------------------------------------------------------------------------
>
> Key: HADOOP-6632
> URL: https://issues.apache.org/jira/browse/HADOOP-6632
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Kan Zhang
> Assignee: Kan Zhang
> Attachments: 6632.mr.patch, c6632-05.patch, HADOOP-6632-Y20S-18.patch, HADOOP-6632-Y20S-22.patch
>
>
> We tested using the same Kerberos key for all datanodes in a HDFS cluster or the same Kerberos key for all TaskTarckers in a MapRed cluster. But it doesn't work. The reason is that when datanodes try to authenticate to the namenode all at once, the Kerberos authenticators they send to the namenode may have the same timestamp and will be rejected as replay requests. This JIRA makes it possible to use a unique key for each service instance.
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