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From "Billie Rinaldi (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-3715) Decrease sampling percentage for tracing
Date Wed, 08 Apr 2015 19:26:12 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-3715?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14485856#comment-14485856
] 

Billie Rinaldi commented on ACCUMULO-3715:
------------------------------------------

My idea of allowing 0ms spans for Accumulo but not HDFS won't work because most of the HDFS
spans are in the client, meaning that they'll originate in an Accumulo process.  We'd be left
to distinguish HDFS spans from Accumulo spans by inspecting the span description, which sounds
bad.  This makes me think we should just start dropping all 0ms spans again.  We could still
make it configurable, though.

> Decrease sampling percentage for tracing
> ----------------------------------------
>
>                 Key: ACCUMULO-3715
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-3715
>             Project: Accumulo
>          Issue Type: Bug
>          Components: trace
>            Reporter: Billie Rinaldi
>            Assignee: Billie Rinaldi
>            Priority: Critical
>             Fix For: 1.7.0
>
>
> Now that HDFS has tracing, individual traces might collect much more tracing data than
they did previously.  We should have a way of controlling how much tracing data is collected
other than just turning off HDFS tracing.



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