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https://issues.apache.org/jira/browse/HBASE-3256?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12973457#action_12973457
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HBase Review Board commented on HBASE-3256:
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Message from: "Andrew Purtell" <[email protected]>
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Ship it!
src/main/java/org/apache/hadoop/hbase/master/HMaster.java
<http://review.cloudera.org/r/1321/#comment6609>
If we were to allow override of assignments, it would have to happen here.
If the cp calls bypass() then return immediately.
src/main/java/org/apache/hadoop/hbase/master/HMaster.java
<http://review.cloudera.org/r/1321/#comment6610>
Likewise if we were to allow overriding assignment, we need a symmetrical
operation here.
- Andrew
> 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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