David Smiley created SOLR-18130:
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Summary: CloudSolrStream should not depend on ZooKeeper
Key: SOLR-18130
URL: https://issues.apache.org/jira/browse/SOLR-18130
Project: Solr
Issue Type: Improvement
Reporter: David Smiley
In the SolrJ streaming expressions module, CloudSolrStream depends on
ZooKeeper, and thus so does its subclasses (DrillStream, TopicStream,
ShuffleStream, ParallelStream). It's a runtime dependency, triggered by a
"zkHost" parameter that's supplied to {{SolrClientCache#getCloudSolrClient}}
that uses {{CloudSolrClient.Builder}} that uses reflection to try to load
{{ZkClientClusterStateProvider}}.
I propose renaming these parameters in the module from zkHost to maybe
"quorumHosts" that could either be list of Solr HTTP (when it starts with
"http:" or "https:") or ZK if not. This should bring about a new
well-deserved constructor to CloudSolrClient.Builder to parse a string, as it's
not a matter specific to streaming expressions. This would be very convenient
to callers I've seen elsewhere.
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