roachtest: follower-reads/survival=zone/locality=global/reads=strong failed #70352
Description
roachtest.follower-reads/survival=zone/locality=global/reads=strong failed with artifacts on release-21.2 @ 0babf97f52ed9e44036851b2a9868e17eeee95ed:
The test failed on branch=release-21.2, cloud=gce:
test artifacts and logs in: /home/agent/work/.go/src/github.com/cockroachdb/cockroach/artifacts/follower-reads/survival=zone/locality=global/reads=strong/run_1
follower_reads.go:657,follower_reads.go:319,follower_reads.go:57,test_runner.go:777: too many intervals with more than 2 nodes with low follower read ratios: 5 intervals > 4 threshold. Bad intervals:
interval 10:16:50-10:17:00: n1 ratio: 0.782 n2 ratio: 0.000 n3 ratio: 1.000 n4 ratio: 1.494 n5 ratio: 0.000 n6 ratio: 1.000
interval 10:17:10-10:17:20: n1 ratio: 1.000 n2 ratio: 0.000 n3 ratio: 0.866 n4 ratio: 1.500 n5 ratio: 0.000 n6 ratio: 1.000
interval 10:18:00-10:18:10: n1 ratio: 0.345 n2 ratio: 1.000 n3 ratio: 0.714 n4 ratio: 1.494 n5 ratio: 0.000 n6 ratio: 1.000
interval 10:18:10-10:18:20: n1 ratio: 0.845 n2 ratio: 1.000 n3 ratio: 0.000 n4 ratio: 1.494 n5 ratio: 0.000 n6 ratio: 0.998
interval 10:19:10-10:19:20: n1 ratio: 1.000 n2 ratio: 0.387 n3 ratio: 0.800 n4 ratio: 1.494 n5 ratio: 0.000 n6 ratio: 1.002