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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