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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-6659) Port HBASE-6508 Filter out edits at log split time
Date Wed, 29 Aug 2012 22:12:09 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6659?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13444471#comment-13444471
] 

stack commented on HBASE-6659:
------------------------------

Again, sorry w/ my late review.  Thanks for reverting the patch for now.

Yeah, seems odd adding currentsequenceid to RegionLoad?  Its not part of region load, I don't
think.  Its more a region attribute (this would not be the first parameter that cannot be
properly called a 'load').

High-level, we'd been trying to shrink the heartbeat with the hope that one day it'd be so
small we could drown it in a bathtub.  Maybe thats not possible.  Outstanding is the fat serverload
object updating the master on each heartbeat.  I don't have specific issues to hand but we've
talked about making it so this serverload could be obtained say via metrics/jmx since we are
publishing the bulk of it there as well as over here up on the heartbeat; seems silly duplicating
info.  ServerLoad updating the master can be a bit lossy... same with this new sequenceid
attribute.  We could put it on the heartbeat -- either as is where serverload is a dumping
ground of all we want to pass from regionserver to master or we could put it in a data structure
apart from serverload -- and then maybe later do refactor of heartbeat to get its info elsewhere
(from zk if unchanging post regionserver registration) and out of metrics w/ master pulling
the info when its interested in particular?

                
> Port HBASE-6508 Filter out edits at log split time
> --------------------------------------------------
>
>                 Key: HBASE-6659
>                 URL: https://issues.apache.org/jira/browse/HBASE-6659
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Zhihong Ted Yu
>            Assignee: Zhihong Ted Yu
>             Fix For: 0.96.0
>
>         Attachments: 6508-v2.txt, 6508-v3.txt, 6508-v4.txt, 6508-v5.txt
>
>
> HBASE-6508 is for 0.89-fb branch.
> This JIRA ports the feature to trunk.

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