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https://issues.apache.org/jira/browse/ACCUMULO-1502?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13750577#comment-13750577
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Jared Winick commented on ACCUMULO-1502:
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Just added a patch to the Administration chapter of the docs. Does the User
Manual HTML get generated somehow from the TeX? I also started examples at
https://github.com/jaredwinick/accumulo-tracing-example that could be
incorporated in with the other samples if desired. With respect to #5 above, I
am unable to get the behavior you describe (tracing of writes without
explicitly calling flush()) to work. I have attempted to make sure the
asynchronous writes inside the BatchWriter have completed by setting the
timeout very low, but still no luck.
> Add Trace Table docs to user manual
> -----------------------------------
>
> Key: ACCUMULO-1502
> URL: https://issues.apache.org/jira/browse/ACCUMULO-1502
> Project: Accumulo
> Issue Type: Sub-task
> Components: docs, trace
> Reporter: Sean Busbey
> Fix For: 1.6.0
>
> Attachments: ACCUMULO-1502.patch
>
>
> Our feature list includes:
> {quote}
> TRACING
> It can be difficult to determine why some operations are taking longer than
> expected. For example, you may be looking up items with very low latency, but
> sometimes the lookups take much longer. Determining the cause of the delay is
> difficult because the system is distributed, and the typical lookup is fast.
> Accumulo has been instrumented to record the time that various operations
> take when tracing is turned on. The fact that tracing is enabled follows all
> the requests made on behalf of the user throughout the distributed
> infrastructure of Accumulo, and across all threads of execution.
> {quote}
> and the user manual makes no mention of the facility, its defaults, how to
> configure it, nor how to leverage it in ops.
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