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https://issues.apache.org/jira/browse/SOLR-15367?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17742515#comment-17742515
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Alex Deparvu commented on SOLR-15367:
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hmm, got excited too quickly :) I was reading up on SOLR-16536 and it is
unclear to me what the state of things is, but this should most likely not be
based on existing OpenTracing code.
> Convert "rid" functionality into a default Tracer
> -------------------------------------------------
>
> Key: SOLR-15367
> URL: https://issues.apache.org/jira/browse/SOLR-15367
> Project: Solr
> Issue Type: Improvement
> Reporter: David Smiley
> Assignee: David Smiley
> Priority: Major
>
> Solr's "rid" (request ID) functionality added in SOLR-14566 could be
> converted into a distributed-tracing OpenTracing Tracer (Solr
> TracerConfigurator) plugin, more or less. Such an implementation, enabled by
> default, would merely generate IDs and pass them along in a custom HTTP
> header. Solr's existing tracing support would then ensure that this ID is in
> MDC in the "t:" log prefix, and thus would fit in nicely. "rid" is kind of a
> cheap bolt-on by comparison, duplicative with tracing but far fewer features.
> Solr's tracing support is growing, supporting more Solr-to-Solr interaction
> than "rid" which is only in a search request.
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