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https://issues.apache.org/jira/browse/IMPALA-7299?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16849996#comment-16849996
 ] 

ASF subversion and git services commented on IMPALA-7299:
---------------------------------------------------------

Commit 97ca8d1f4c24c21ba65b036580e27606bf4c939b in impala's branch 
refs/heads/2.x from Alex Rodoni
[ https://gitbox.apache.org/repos/asf?p=impala.git;h=97ca8d1 ]

IMPALA-7299: [DOCS] A known issue with IMPALA-7298

Kerberos authentication fails with the reverse DNS lookup disabled.

Change-Id: I5b8104a2747b4e8051d4bdcab906486444680218
Reviewed-on: http://gerrit.cloudera.org:8080/10952
Reviewed-by: Sailesh Mukil <[email protected]>
Tested-by: Impala Public Jenkins <[email protected]>
Reviewed-on: http://gerrit.cloudera.org:8080/13449
Reviewed-by: Alex Rodoni <[email protected]>


> Impala fails to work with the krb5 config 'rdns=false' in Impala 2.12.0/3.0
> ---------------------------------------------------------------------------
>
>                 Key: IMPALA-7299
>                 URL: https://issues.apache.org/jira/browse/IMPALA-7299
>             Project: IMPALA
>          Issue Type: Task
>          Components: Docs
>    Affects Versions: Impala 3.0, Impala 2.12.0
>            Reporter: Sailesh Mukil
>            Assignee: Alex Rodoni
>            Priority: Critical
>              Labels: docs
>             Fix For: Impala 3.1.0
>
>
> Since we've switched to using KRPC from Impala 2.12.0 and Impala 3.0, we 
> found a bug that doesn't allow for kerberized communication if the following 
> flag in krb5.conf is changed from its default of 'rdns=true' to 'rdns=false'.
> The current workaround is to set it back to its default of 'true'. Keep in 
> mind that the 'dns_canonicalize_hostname' flag should also be 'true' 
> otherwise the 'rdns' flag will be ignored.
> More details on the flag can be found here:
> http://web.mit.edu/kerberos/krb5-1.12/doc/admin/conf_files/krb5_conf.html
> A fix for this issue is tracked by IMPALA-7298.



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