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From Jeff Wartes <>
Subject state.json being downloaded every 10 seconds
Date Mon, 16 May 2016 18:08:04 GMT

I have a solr 5.4 cluster with three collections, A, B, C.
Nodes either host replicas for collection A, or B and C. Collections B and C are not currently
used - no inserts or queries. Collection A is getting significant query traffic, but no insert
traffic, and queries are only directed to nodes hosting replicas for collection A. ZK timeout
is set to 15 seconds.

I’ve noticed via tcpdump that, every 10 seconds exactly, several of the nodes (but not all)
hosting collection A re-download the state.json for collections B and C. This behavior survives
JVM restart.

This isn’t a huge deal, the extra traffic isn’t very meaningful, but it’s odd and smells
like a bug somewhere. Anyone seen something like this?

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