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From "Jonathan Leavitt (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-6524) Hooks for hbase tracing
Date Tue, 21 Aug 2012 19:43:38 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6524?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13438980#comment-13438980
] 

Jonathan Leavitt commented on HBASE-6524:
-----------------------------------------

@Stack. I uploaded another image.  As you may notice, the descriptions on this image are not
as descriptive as they are in the first image I uploaded.  This is because the toString()
on HBaseServer.Call is different with the ProtobufRpcEngine.  It now just concatenates the
toString of the rpcRequestBody with the toString of the connection. Unfortunately the default
protobuf toString does not give the most useful information.  You can still make out the basics
of the requests.

bq. Yeah, that sounds good. Can do that in new JIRA?
Yes. I think that this commit is good for including htrace in maven dependencies and the basic
instrumentation, and additional instrumentation should go in other JIRAs. 

{quote}I just think this a topic that will be of general interest.
For refguide, a sentence or two w/ pointers on how to set it all up would be great. {quote}

I'll try to have some sort of blog post and ref guide stuff done today or tomorrow. 

bq. I think we should commit this if its fine by you.
Sounds good. 


                
> Hooks for hbase tracing
> -----------------------
>
>                 Key: HBASE-6524
>                 URL: https://issues.apache.org/jira/browse/HBASE-6524
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Jonathan Leavitt
>         Attachments: createTableTrace.png, hbase-6524.diff
>
>
> Includes the hooks that use [htrace|http://www.github.com/cloudera/htrace] library to
add dapper-like tracing to hbase.

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