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https://issues.apache.org/jira/browse/HTRACE-297?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15002957#comment-15002957
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stack commented on HTRACE-297:
------------------------------

Looks good. +1. Changes in  
b/htrace-htraced/go/src/org/apache/htrace/htraced/datastore_test.go
 intentional? New heartbeat interval and stripping port?

> htraced: avoid serializing spans to json unless TRACE logging is enabled
> ------------------------------------------------------------------------
>
>                 Key: HTRACE-297
>                 URL: https://issues.apache.org/jira/browse/HTRACE-297
>             Project: HTrace
>          Issue Type: Bug
>          Components: htraced
>    Affects Versions: 4.0
>            Reporter: Colin Patrick McCabe
>            Assignee: Colin Patrick McCabe
>         Attachments: HTRACE-297.001.patch
>
>
> We have been unconditionally serializing spans to JSON, but only logging them 
> when TRACE logging is enabled.  Profiling has revealed that this is a CPU 
> bottleneck.  Let's put "if" statement guards around the log messages to avoid 
> doing this serialization unless it is really useful.



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