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From "Mikhail Antonov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-10866) Decouple HLogSplitterHandler from ZooKeeper
Date Tue, 01 Apr 2014 06:22:19 GMT

    [ https://issues.apache.org/jira/browse/HBASE-10866?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13956155#comment-13956155
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Mikhail Antonov commented on HBASE-10866:
-----------------------------------------

[~ lhofhansl] thanks for feedback!

Yeah, totally understand this abstraction effort needs to be finished everywhere (and also
the fact that it's quite a bit of work, affecting  many places in the codebase). The piecemeal
approach would provide for easier review/feedbacks of patches to ensure they're in line with
the goal (as [~stack] and [~cos] noted), and for better work structuring and parallelization.

> Decouple HLogSplitterHandler from ZooKeeper
> -------------------------------------------
>
>                 Key: HBASE-10866
>                 URL: https://issues.apache.org/jira/browse/HBASE-10866
>             Project: HBase
>          Issue Type: Improvement
>          Components: regionserver, Zookeeper
>            Reporter: Mikhail Antonov
>         Attachments: HBASE-10866.patch, HBASE-10866.patch, HBASE-10866.patch, HBASE-10866.patch,
HBaseConsensus.pdf
>
>
> As some sort of follow-up or initial step towards HBASE-10296...
> Whatever consensus algorithm/library may be the chosen, perhaps on 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).
> I'd like to propose a series of patches to help better abstract out zookeeper (and then
help develop consensus APIs). 
> Here is first version of  patch for initial review (then I'm planning to work on another
handlers in regionserver, and then perhaps start working on abstracting listeners).



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