Shalin Shekhar Mangar created SOLR-8980:
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Summary: Source cluster in CDCR setup should create clients for
target cluster lazily
Key: SOLR-8980
URL: https://issues.apache.org/jira/browse/SOLR-8980
Project: Solr
Issue Type: Improvement
Components: CDCR, SolrCloud
Affects Versions: 6.0
Reporter: Shalin Shekhar Mangar
Fix For: master, 6.1
CdcrReplicatorManager currently eagerly creates a CloudSolrClient for the
target cluster on each and every node of the source cluster. This is wasteful
and causes a ZkStateReader and this a ZK connection to the target ZK servers.
This is also why the CDCR page in the reference guide recommends increasing the
maxClientCnxns setting in Zookeeper to keep up with the large number of
connections maintained by the nodes in the source cluster.
Source cluster in CDCR setup should create clients for target cluster only on
the leader nodes and that too lazily.
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