[jira] [Created] (SOLR-16943) Add client tracing spans to HTTP interaction; at least for Jetty HttpClient

["David Smiley (Jira)" <ji...@apache.org>]

David Smiley created SOLR-16943:
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             Summary: Add client tracing spans to HTTP interaction; at least for Jetty HttpClient
                 Key: SOLR-16943
                 URL: https://issues.apache.org/jira/browse/SOLR-16943
             Project: Solr
          Issue Type: Improvement
      Security Level: Public (Default Security Level. Issues are Public)
          Components: tracing
            Reporter: David Smiley


Adding a client side span is useful to see bottlenecks in client-server interaction, especially async delivery delays.

Additionally: Instead of injecting tracing at HttpShardHandler & SolrCmdDistributor, go deeper at InstrumentedHttpListenerFactory, thereby covering more use-cases.  A random example is org.apache.solr.update.processor.DistributedUpdateProcessor#fetchFullUpdateFromLeader which currently isn't traced.



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