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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-4287) Unable to access secured HBase from a yarn-session.
Date Tue, 02 Aug 2016 09:01:20 GMT

    [ https://issues.apache.org/jira/browse/FLINK-4287?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15403655#comment-15403655
] 

ASF GitHub Bot commented on FLINK-4287:
---------------------------------------

Github user mxm commented on the issue:

    https://github.com/apache/flink/pull/2317
  
    Thanks @nielsbasjes. Will merge with #2320.


> Unable to access secured HBase from a yarn-session.
> ---------------------------------------------------
>
>                 Key: FLINK-4287
>                 URL: https://issues.apache.org/jira/browse/FLINK-4287
>             Project: Flink
>          Issue Type: Improvement
>          Components: YARN Client
>    Affects Versions: 1.0.3
>            Reporter: Niels Basjes
>            Assignee: Niels Basjes
>
> When I start {{yarn-session.sh -n1}} against a Kerberos secured Yarn+HBase cluster I
see this in the messages:
> {quote}
> 2016-08-01 09:53:01,763 INFO  org.apache.flink.yarn.Utils                           
       - Attempting to obtain Kerberos security token for HBase
> 2016-08-01 09:53:01,763 INFO  org.apache.flink.yarn.Utils                           
       - HBase is not available (not packaged with this application): ClassNotFoundException
: "org.apache.hadoop.hbase.HBaseConfiguration".
> {quote}
> as a consequence it has become impossible to access a secured HBase from this yarn session.
> From what I see now at least two things need to be done:
> # Add all relevant HBase parts to the yarn-session.sh scripting.
> # Add an optional option to pass principle and keytab file so the session can last longer
than the time the Kerberos tickets last. (i.e pass these parameters into a call to {{UserGroupInformation.loginUserFromKeytab(user,
keytabFile);}})
> I do see that this would leave an important problem open:
> This yarnsession is accessible by everyone on the cluster and as a consequence they can
run jobs in there that can access all data I have access to. Perhaps this should be a separate
jira issue?



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