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From "Mikhail Antonov (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HBASE-10909) Abstract out ZooKeeper usage in HBase - phase 1
Date Mon, 08 Sep 2014 01:57:30 GMT

     [ https://issues.apache.org/jira/browse/HBASE-10909?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Mikhail Antonov resolved HBASE-10909.
-------------------------------------
    Resolution: Fixed

Marking as "resolved" as all subtasks have been completed.

> Abstract out ZooKeeper usage in HBase - phase 1
> -----------------------------------------------
>
>                 Key: HBASE-10909
>                 URL: https://issues.apache.org/jira/browse/HBASE-10909
>             Project: HBase
>          Issue Type: Umbrella
>          Components: Consensus, Zookeeper
>    Affects Versions: 0.99.0
>            Reporter: Mikhail Antonov
>            Assignee: Mikhail Antonov
>             Fix For: 0.99.0, 2.0.0
>
>         Attachments: HBaseConsensus.pdf, HBaseConsensus.pdf, HBaseConsensus.pdf
>
>
> As some sort of follow-up or initial step towards HBASE-10296.
> Whatever consensus algorithm/library may be the chosen, perhaps one of first practical
steps towards this goal would be to better abstract ZK-related API and details, which are
now throughout the codebase (mostly leaked throuth ZkUtil, ZooKeeperWatcher and listeners).
> This jira is umbrella for relevant subtasks. Design doc is attached, for comments/questions
there's a google doc linked.
> This issue covers phase-1 of abstraction work, which includes:
>  - infrastructure to support pluggable coordinated state managers
>  - abstraction of region opening/closing/splitting/merging operations
>  - abstraction of admin operation handlers like CreateTableHandler
>  - abstract ZKTable (reworked it to interface and implementation, allowing for new system
tables-based impl to be developed)
>  - WAL splitting abstraction.



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