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From "Chao Shi (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-9683) Port HTrace support to 0.94
Date Thu, 17 Oct 2013 02:15:42 GMT

    [ https://issues.apache.org/jira/browse/HBASE-9683?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13797545#comment-13797545
] 

Chao Shi commented on HBASE-9683:
---------------------------------

Hi [~eclark], I agree that the 0.94 RPC is ugly in terms of expansion and it needs much more
carefulness and efforts than the PB based one. I believe that the 0.94 series will remain
in production for a while (at least for us and for several other users that I know of). Having
this back ported to 0.94 will definitely benefit a lot of existing users.

>  Port HTrace support to 0.94
> ----------------------------
>
>                 Key: HBASE-9683
>                 URL: https://issues.apache.org/jira/browse/HBASE-9683
>             Project: HBase
>          Issue Type: Improvement
>    Affects Versions: 0.94.12
>            Reporter: Chao Shi
>         Attachments: hbase-9683.patch, hbase-9683-v2.patch, hbase-9683-v3.patch, hbase-zipkin.png
>
>
> Port HTrace (HBASE-6524) to 0.94. This patch includes a wire-format change on writable
RPC. It serializes the traceID and spanID in class Invocation. This should be compatible with
old versions.



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