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From "Gary Helmling (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4263) New config property for user-table only RegionObservers.
Date Mon, 29 Aug 2011 19:03:39 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4263?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13093093#comment-13093093

Gary Helmling commented on HBASE-4263:

The patch seems fine to me.  I view the additional config property as just a short-cut to
enabling a coprocessor per-table on each user table.

I do think that too many configuration properties can become confusing, but I don't think
one more will kill us.

For naming, I prefer hbase.coprocessor.user.region.classes for consistency with terminology
throughout other coprocessor code/configs.  If we name break that consistency, let's have
a good reason.

> New config property for user-table only RegionObservers.
> --------------------------------------------------------
>                 Key: HBASE-4263
>                 URL: https://issues.apache.org/jira/browse/HBASE-4263
>             Project: HBase
>          Issue Type: Improvement
>          Components: coprocessors
>    Affects Versions: 0.92.0
>            Reporter: Lars Hofhansl
>            Priority: Minor
>             Fix For: 0.92.0
>         Attachments: 4263.txt
> It turns out that a RegionObserver can interfere with - ROOT - and .META.
> That seems weird and should be prevented.
> (The one use case for this that I could come up with is access control by Region by intercepting
actions on .META., and I don't think that's a particularly strong use case).
> I'll attach a patch as soon as I get to it.

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