release-23.2: kvclient: stop reads on followers #114259
Merged
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Backport 1/1 commits from #114205 on behalf of @andrewbaptist.
/cc @cockroachdb/release
Stop follower reads on draining, decommissioning or unhealthy nodes.
Epic: none
Fixes: #112351
Release note (performance improvement): This change prevents failed requests from being issued on followers that are draining, decommissioning or unhealthy which prevents latency spikes if those nodes later go offline.
Release justification: Customer has asked for this functionality. It is disabled by default and only impacts customers who enable it.