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https://issues.apache.org/jira/browse/HTRACE-144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14380996#comment-14380996
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Colin Patrick McCabe commented on HTRACE-144:
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bq. I would prefer hostnames if at all possible. IP's are a whole can of worms
for multi-homed and for ipv6/ipv4.
I agree that hostnames should be an option, but let's do hostnames in a
follow-on JIRA.
I think hostnames are actually a similar can of worms to IP addresses. A
single node can have many host names (even multiple on one interface, and a
node can have arbitrarily many network interfaces). Also, some people are
really, really bad at choosing hostnames (you see hostnames like
"afbsadf34g2g4t3" or something, and referring to nodes by ip addresses is
actually shorter in many (most?) cases. Finally, hostnames just take up more
space on the wire and I am sensitive to that.
> Include IP address in span process description
> ----------------------------------------------
>
> Key: HTRACE-144
> URL: https://issues.apache.org/jira/browse/HTRACE-144
> Project: HTrace
> Issue Type: Improvement
> Affects Versions: 3.2.0
> Reporter: Colin Patrick McCabe
> Assignee: Colin Patrick McCabe
> Attachments: HTRACE-144.001.patch
>
>
> Right now, we have no IP address or hostname specified in the span process
> description. So if we have 100 datanodes, the spans from all of them simply
> show up as "DataNode." Obviously this is unsatisfactory.
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