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From "Sean Busbey (JIRA)" <j...@apache.org>
Subject [jira] [Created] (ACCUMULO-1502) Add Trace Table docs to user manual
Date Fri, 07 Jun 2013 11:46:20 GMT
Sean Busbey created ACCUMULO-1502:
-------------------------------------

             Summary: 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


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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