Clay B. created HBASE-16700:
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             Summary: Allow for coprocessor whitelisting
                 Key: HBASE-16700
                 URL: https://issues.apache.org/jira/browse/HBASE-16700
             Project: HBase
          Issue Type: Improvement
          Components: Coprocessors
            Reporter: Clay B.
            Priority: Minor


Today one can turn off all non-system coprocessors with 
{{hbase.coprocessor.user.enabled}} however, this disables very useful things 
like Apache Phoenix's coprocessors. Some tenants of a multi-user HBase may also 
need to run bespoke coprocessors. But as an operator I would not want wanton 
coprocessor usage. Ideally, one could do one of two things:
* Allow coprocessors defined in {{hbase-site.xml}} -- this can only be 
administratively changed in most cases
* Allow coprocessors from table descriptors but only if the coprocessor is 
whitelisted



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