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From "Matteo Bertozzi (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-15200) ZooKeeper znode ACL checks should only compare the shortname
Date Tue, 02 Feb 2016 16:43:39 GMT

    [ https://issues.apache.org/jira/browse/HBASE-15200?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15128514#comment-15128514

Matteo Bertozzi commented on HBASE-15200:

latest patch with the check for both looks ok to me. +1
just need to fix the String.format() at the end of the patch with %0x instead of 0x%x

> ZooKeeper znode ACL checks should only compare the shortname
> ------------------------------------------------------------
>                 Key: HBASE-15200
>                 URL: https://issues.apache.org/jira/browse/HBASE-15200
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 2.0.0, 1.2.0, 1.0.3, 1.1.3, 0.98.17
>            Reporter: Andrew Purtell
>            Assignee: Andrew Purtell
>            Priority: Minor
>             Fix For: 2.0.0, 1.3.0, 1.1.4, 0.98.18
>         Attachments: HBASE-15200.patch, HBASE-15200.patch
> After HBASE-13768 we check at startup in secure configurations if our znodes have the
correct ACLs. However when checking the ACL we compare the Kerberos fullname, which includes
the host component. We should only compare the shortname, the principal. Otherwise in a multimaster
configuration we will unnecessarily reset ACLs whenever any master running on a host other
than the one that initialized the ACLs makes the check. You can imagine this happening multiple
times in a rolling restart scenario.

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