[jira] [Commented] (HBASE-12259) Bring quorum based write ahead log into HBase

["Gaurav Menghani (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-12259?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14212634#comment-14212634 ] 

Gaurav Menghani commented on HBASE-12259:
-----------------------------------------

Created the first patch for the consensus protocol in (HBASE-12476).

> 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
>
> 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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