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From "Rishit Shroff (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-12259) Bring quorum based write ahead log into HBase
Date Sat, 15 Nov 2014 01:15:37 GMT

    [ https://issues.apache.org/jira/browse/HBASE-12259?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14213223#comment-14213223
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Rishit Shroff commented on HBASE-12259:
---------------------------------------

I have attached a high level architecture overview document about the set of changes with
the HydraBase project. Please take a look! Thanks!


> Bring quorum based write ahead log into HBase
> ---------------------------------------------
>
>                 Key: HBASE-12259
>                 URL: https://issues.apache.org/jira/browse/HBASE-12259
>             Project: HBase
>          Issue Type: Improvement
>          Components: wal
>    Affects Versions: 2.0.0
>            Reporter: Elliott Clark
>         Attachments: Architecture for HydraBase (4).pdf
>
>
> HydraBase ( https://code.facebook.com/posts/321111638043166/hydrabase-the-evolution-of-hbase-facebook/
) Facebook's implementation of HBase with Raft for consensus will be going open source shortly.
We should pull in the parts of that fb-0.89 based implementation, and offer it as a feature
in whatever next major release is next up. Right now the Hydrabase code base isn't ready to
be released into the wild; it should be ready soon ( for some definition of soon).
> Since Hydrabase is based upon 0.89 most of the code is not directly applicable. So lots
of work will probably need to be done in a feature branch before a merge vote.
> Is this something that's wanted?
> Is there anything clean up that needs to be done before the log implementation is able
to be replaced like this?
> What's our story with upgrading to this? Are we ok with requiring down time ?



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