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https://issues.apache.org/jira/browse/HBASE-13044?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14660311#comment-14660311
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Andrew Purtell commented on HBASE-13044:
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bq. How should the above combination be interpreted ?

It doesn't make sense. Coprocessors should be disabled except for table 
coprocessors? And then the complaint is system coprocessors do not load? 

If I recall correctly, the setting for hbase.coprocessor.enabled will override 
the setting for hbase.coprocessor.user.enabled. If you want to globally disable 
coprocessors, use only hbase.coprocessor.enabled=false. If you want to disable 
table coprocessors but allow system coprocessors, use only 
hbase.coprocessor.user.enabled=false

I'm sure we'd take up a doc patch that describes these settings in detail 
somewhere in the online manual.



> Configuration option for disabling coprocessor loading
> ------------------------------------------------------
>
>                 Key: HBASE-13044
>                 URL: https://issues.apache.org/jira/browse/HBASE-13044
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Andrew Purtell
>            Assignee: Andrew Purtell
>            Priority: Minor
>             Fix For: 2.0.0, 1.0.1, 1.1.0, 0.98.11
>
>         Attachments: HBASE-13044.patch, HBASE-13044.patch
>
>
> Some users would like complete assurance coprocessors cannot be loaded. Add a 
> configuration option that prevents coprocessors from ever being loaded by 
> ignoring any load directives found in the site file or table metadata. 



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