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https://issues.apache.org/jira/browse/HBASE-4180?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13081403#comment-13081403
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Bochun Bai commented on HBASE-4180:
-----------------------------------

0.20 doesn't have isSecurityEnabled,
0.20-SEC does have isSecurityEnabled,
0.21 does have isSecurityEnabled but not means it must configured to use it.

If we need HBase work with a non-security hadoop, I think we need find another 
way to identify it.


> HBase should check the isSecurityEnabled flag
> ---------------------------------------------
>
>                 Key: HBASE-4180
>                 URL: https://issues.apache.org/jira/browse/HBASE-4180
>             Project: HBase
>          Issue Type: Bug
>          Components: security
>            Reporter: Bochun Bai
>            Assignee: Bochun Bai
>         Attachments: HBASE-4180.patch
>
>
> Hadoop 0.21.0's UserGroupInfomation support the security check flag and 
> always returns false.
> HBase should check both the method existence and the return value.

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