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From "Anoop Sam John (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-11639) [Visibility controller] Replicate the visibility of Cells as strings
Date Thu, 11 Sep 2014 02:07:33 GMT

    [ https://issues.apache.org/jira/browse/HBASE-11639?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14129518#comment-14129518
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Anoop Sam John commented on HBASE-11639:
----------------------------------------

bq.Just update the AC at the same time the new hooks go in? 
Yes. AC, as it is our internal CP impl, is not having any issue.  We discussed here abt this
later.
The one concern I have is as follows
User having a RegionServerObserver CP impl (Implementing RegionServerObserver) and this is
based on older 98 version. Later he has upgraded to newer version of 98 which is having these
extra method in CP.   If no recompile there is no need to add the dummy impl.   But the core
code will try to call this hook on the existing CP impl object and will throw RTE.  If abort
on error in CP is true this will cause to RS to abort. Do we need to guard this case? In the
past we have added new CP hooks in point releases. So what can be general agreement in this
area?

> [Visibility controller] Replicate the visibility of Cells as strings
> --------------------------------------------------------------------
>
>                 Key: HBASE-11639
>                 URL: https://issues.apache.org/jira/browse/HBASE-11639
>             Project: HBase
>          Issue Type: Improvement
>          Components: Replication, security
>    Affects Versions: 0.98.4
>            Reporter: ramkrishna.s.vasudevan
>            Assignee: ramkrishna.s.vasudevan
>              Labels: VisibilityLabels
>             Fix For: 2.0.0, 0.98.7, 0.99.1
>
>
> This issue is aimed at persisting the visibility labels as strings in the WAL rather
than Label ordinals.  This would help in replicating the label ordinals to the replication
cluster as strings directly and also that after HBASE-11553 would help because the replication
cluster could have an implementation as string based visibility labels.



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