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