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Date: Thu, 6 Nov 2014 21:48:34 +0000 (UTC)
From: "Matteo Bertozzi (JIRA)" <jira@apache.org>
To: dev@hbase.apache.org
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Subject: [jira] [Created] (HBASE-12439) Procedure V2
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Matteo Bertozzi created HBASE-12439:
---------------------------------------

             Summary: Procedure V2
                 Key: HBASE-12439
                 URL: https://issues.apache.org/jira/browse/HBASE-12439
             Project: HBase
          Issue Type: New Feature
          Components: master
    Affects Versions: 2.0.0
            Reporter: Matteo Bertozzi
            Assignee: Matteo Bertozzi
            Priority: Minor
         Attachments: ProcedureV2.pdf

Procedure v2 (aka Notification Bus) aims to provide a unified way to build:
* multi-steps procedure with a rollback/rollforward ability in case of failure (e.g. create/delete table)
** HBASE-12070
* notifications across multiple machines (e.g. ACLs/Labels/Quotas cache updates)
** Make sure that every machine has the grant/revoke/label
** Enforce "space limit" quota across the namespace
** HBASE-10295 eliminate permanent replication zk node
* procedures across multiple machines (e.g. Snapshots)
* coordinated long-running procedures (e.g. compactions, splits, ...)
* Synchronous calls, with the ability to see the state/result in case of failure.
** HBASE-11608 sync split

still work in progress/initial prototype: https://reviews.apache.org/r/27703/


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