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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7213) Have HLog files for .META. edits only
Date Fri, 11 Jan 2013 06:18:13 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7213?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13550873#comment-13550873

stack commented on HBASE-7213:

I was trying this [~devaraj] and if fails to apply to trunk.  I tried to get it in but there
is a big difference in this file: hbase-server/src/main/java/org/apache/hadoop/hbase/master/handler/ServerShutdownHandler.java.rej
 Mind taking look see sir?

Looking at the patch again, you might move the define that is out in HConstants local to the
wal package:

public static final String META_HLOG_FILE_EXTN = ".meta";  

Put it in HLog.java Interface?

In MasterFileSystem, should a few of the public methods have some javadoc or comment?  For
instance, I see splitMetaLog twice but one takes a ServerName and another takes a list of
ServerNames but their bodies do different things.  It is a little confusing.

Else looks good.  Lets get it in quick.  Elsewhere fellas are talking about removing MetaServerShutdown
handler so would require yet another patch moving stuff around.  Good stuff.

> Have HLog files for .META. edits only
> -------------------------------------
>                 Key: HBASE-7213
>                 URL: https://issues.apache.org/jira/browse/HBASE-7213
>             Project: HBase
>          Issue Type: Improvement
>          Components: master, regionserver
>            Reporter: Devaraj Das
>            Assignee: Devaraj Das
>            Priority: Critical
>             Fix For: 0.96.0
>         Attachments: 7213-2.10.patch, 7213-2.4.patch, 7213-2.6.patch, 7213-2.8.patch,
7213-2.9.patch, 7213-in-progress.2.2.patch, 7213-in-progress.2.patch, 7213-in-progress.patch
> Over on HBASE-6774, there is a discussion on separating out the edits for .META. regions
from the other regions' edits w.r.t where the edits are written. This jira is to track an
implementation of that.

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