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https://issues.apache.org/jira/browse/HBASE-4424?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13106849#comment-13106849
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Andrew Purtell commented on HBASE-4424:
---------------------------------------

+1

bq. The alternative would be to expose some sort of HBaseAdmin like interface 
via MasterCoprocessorEnvironment

This has some appeal, but is more than we need to do now. Perhaps a follow up.

> Provide a means for coprocessors to create tables for internal use
> ------------------------------------------------------------------
>
>                 Key: HBASE-4424
>                 URL: https://issues.apache.org/jira/browse/HBASE-4424
>             Project: HBase
>          Issue Type: Improvement
>          Components: coprocessors
>            Reporter: Gary Helmling
>
> When developing access controls as a coprocessor, we needed to create an 
> internal "_acl_" table for persisting the permission grants.  We could have 
> done this in the coprocessor through HBaseAdmin, but it seems silly to go 
> through an RPC loop when we're already implementing a MasterObserver running 
> on HMaster.
> So the simplest approach was to expose createTable() in MasterServices:
> {code}
>   /**
>    * Create a table using the given table definition.
>    * @param desc The table definition
>    * @param splitKeys Starting row keys for the initial table regions.  If 
> null
>    *     a single region is created.
>    * @param sync If true, waits for all initial regions to be assigned before
>    *     returning
>    */
>   public void createTable(HTableDescriptor desc, byte [][] splitKeys)
>       throws IOException;
> {code}
> Other coprocessor implementations will likely have similar needs, so I 
> propose we add this to MasterServices.
> The alternative would be to expose some sort of HBaseAdmin like interface via 
> MasterCoprocessorEnvironment, similar to what we do for HTable, but this 
> would be a fair bit more work, and I still think we'll need a way to provide 
> this capability in the short term.

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