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https://issues.apache.org/jira/browse/ACCUMULO-898?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13745439#comment-13745439
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Eric Newton commented on ACCUMULO-898:
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I've done a quick look the HBase Storage implementation.  It maps variable 
length items to unique ids which introduces a lot of complexity.  The current 
Accumulo trace table just stuffs the spans in, 3 times, for different search 
strategies (by traceId, by service and by time).  For a first cut of an 
Accumulo based Storage, I think I'll just keep doing that.

                
> look into replacing cloudtrace
> ------------------------------
>
>                 Key: ACCUMULO-898
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-898
>             Project: Accumulo
>          Issue Type: Improvement
>            Reporter: Eric Newton
>
> HBase has created their own distributed tracing library, and today I bumped 
> into zipkin.  zipkin has a reasonable visualization, and seems to work with 
> thrift.  We should look into replacing our tracing with one of these.

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