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https://issues.apache.org/jira/browse/HBASE-3256?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gary Helmling updated HBASE-3256:
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Attachment: HBASE-3256_initial.patch
Here's a preview version of the patch adding the MasterObserver interface and
related changes and refactorings. The final version of this is waiting on an
implementation of the lifecycle hooks for HBASE-3260. Once I complete those
changes, I will merge here, add unit tests and put the final version of this
patch up on review board.
> Coprocessors: Coprocessor host and observer for HMaster
> -------------------------------------------------------
>
> Key: HBASE-3256
> URL: https://issues.apache.org/jira/browse/HBASE-3256
> Project: HBase
> Issue Type: Sub-task
> Reporter: Andrew Purtell
> Assignee: Gary Helmling
> Fix For: 0.92.0
>
> Attachments: HBASE-3256_initial.patch
>
>
> Implement a coprocessor host for HMaster. Hook observers into administrative
> operations performed on tables: create, alter, assignment, load balance, and
> allow observers to modify base master behavior. Support automatic loading of
> coprocessor implementation.
> Consider refactoring the master coprocessor host and regionserver coprocessor
> host into a common base class.
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