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https://issues.apache.org/jira/browse/HBASE-14451?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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stack updated HBASE-14451:
--------------------------
    Attachment: 14451.wip.v16.patch

WIP

Mostly work adding tests for tracing Table using the nocluster tools (mocked 
servers). Had to do some fixup of the mocks and then fix up of the tracing 
naming, bug fixing, moving trace points.

Some interesting stuff already such as triple lookup on meta on new operation 
(to be confirmed) and double flush though we only write a single small batch.

Working next on instrumenting the Admin functions but will likely do a cluster 
for these tests rather than mocks since hard to get all ops.

Once client is filled out, will move to server-side.

Related, htracing the YCSB client got committed to master branch over there: 
https://github.com/brianfrankcooper/YCSB/pull/529/commits

> Move on to htrace-4.0.1 (from htrace-3.2.0) and tell a couple of good trace 
> stories
> -----------------------------------------------------------------------------------
>
>                 Key: HBASE-14451
>                 URL: https://issues.apache.org/jira/browse/HBASE-14451
>             Project: HBase
>          Issue Type: Task
>          Components: Operability, Performance
>            Reporter: stack
>            Assignee: stack
>            Priority: Critical
>         Attachments: 14451.txt, 14451.v10.txt, 14451.v10.txt, 
> 14451.wip.v16.patch, 14451v11.patch, 14451v13.txt, 14451v15.patch, 
> 14451v2.txt, 14451v3.txt, 14451v4.txt, 14451v5.txt, 14451v6.txt, 14451v7.txt, 
> 14451v8.txt, 14451v9.txt, 14551v12.patch, 14888v14.txt
>
>
> htrace-4.0.0 was just release with a new API. Get up on it.



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