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From "Enis Soztutar (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-12439) Procedure V2
Date Thu, 29 Dec 2016 23:08:59 GMT

    [ https://issues.apache.org/jira/browse/HBASE-12439?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15786351#comment-15786351
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Enis Soztutar commented on HBASE-12439:
---------------------------------------

Thanks Stack for putting these docs out. Do we have a lower-level write up on the assignment
manager design? The high-level doc is there, but does not talk about anything specific to
locking, ordering, how servers are managed, etc. It has been some time I've looked at the
recent state (for AM), but is the new patches cover the whole design, or is there more stuff
to do? 

> 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
>              Labels: reliability
>             Fix For: 2.0.0
>
>         Attachments: Procedurev2Notification-Bus.pdf, Procedurev2Notification-BusRoadmap.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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