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From "Yu Li (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-10648) Pluggable Memstore
Date Fri, 14 Mar 2014 10:06:47 GMT

    [ https://issues.apache.org/jira/browse/HBASE-10648?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13934833#comment-13934833

Yu Li commented on HBASE-10648:

Sorry I will need some more time to post a patch for HBASE-10713
I see, it's ok, thanks for the update. In this case I might start writing some code by myself
(you know, the deadline thing :-)), and I'll appreciate a lot if you can send your drafted
patch to me through email, before it's ready for public. Just want to avoid duplicated work
as much as possible.

BTW I am not sure whether this kind of a change can go into an older version like 94
Sorry but what's preventing the change to go into 94? The CSLM issue (when there are too many
KVs in it) also exists in v94, and we also want to get relieved from that:-)  Of course I'm
not expecting the whole HBASE-10191 solution go into 94, but after making Memstore impl pluggable,
at least in-memory flush impl would fit well in 0.94, right?

You want to internally maintain that?
It's not an easy decision to upgrade to a new version in product env, and I'm afraid we'll
stay on 94 for some while, so yes we will maintain this internally. But of course I'll try
to contribute back to 94 branch after fully test, so others using 94 can also benefit.

> Pluggable Memstore
> ------------------
>                 Key: HBASE-10648
>                 URL: https://issues.apache.org/jira/browse/HBASE-10648
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Anoop Sam John
>            Assignee: Anoop Sam John
>         Attachments: HBASE-10648-0.94_v1.patch, HBASE-10648.patch, HBASE-10648_V2.patch,
HBASE-10648_V3.patch, HBASE-10648_V4.patch, HBASE-10648_V5.patch, HBASE-10648_V6.patch
> Make Memstore into an interface implementation.  Also make it pluggable by configuring
the FQCN of the impl.
> This will allow us to have different impl and optimizations in the Memstore DataStructure
and the upper layers untouched.

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