roachtest: kv0/enc=false/nodes=3/cpu=32/size=64kb failed

[cockroach-teamcity]

SHA: https://github.com/cockroachdb/cockroach/commits/9671342fead0509bec0913bae4ae1f244660788e

Parameters:

To repro, try:

# Don't forget to check out a clean suitable branch and experiment with the
# stress invocation until the desired results present themselves. For example,
# using stress instead of stressrace and passing the '-p' stressflag which
# controls concurrency.
./scripts/gceworker.sh start && ./scripts/gceworker.sh mosh
cd ~/go/src/github.com/cockroachdb/cockroach && \
stdbuf -oL -eL \
make stressrace TESTS=kv0/enc=false/nodes=3/cpu=32/size=64kb PKG=roachtest TESTTIMEOUT=5m STRESSFLAGS='-maxtime 20m -timeout 10m' 2>&1 | tee /tmp/stress.log

Failed test: https://teamcity.cockroachdb.com/viewLog.html?buildId=1298500&tab=buildLog

The test failed on branch=release-19.1, cloud=gce:
	cluster.go:1474,kv.go:69,cluster.go:1812,errgroup.go:57: /home/agent/work/.go/src/github.com/cockroachdb/cockroach/bin/roachprod run teamcity-1298500-kv0-enc-false-nodes-3-cpu-32-size-64kb:4 -- ./workload run kv --init --splits=1000 --histograms=logs/stats.json --concurrency=192 --duration=10m --read-percent=0 --min-block-bytes=65536 --max-block-bytes=65536 {pgurl:1-3} returned:
		stderr:
		
		stdout:
		I190521 10:57:38.143558 1 workload/workload.go:562  starting 1000 splits
		Error: ALTER TABLE kv SPLIT AT VALUES (9214157878976512): pq: splits would be immediately discarded by merge queue; disable the merge queue first by running 'SET CLUSTER SETTING kv.range_merge.queue_enabled = false'
		Error:  ssh verbose log retained in /root/.roachprod/debug/ssh_34.74.197.120_2019-05-21T10:57:36Z: exit status 1
		: exit status 1
	cluster.go:1833,kv.go:72,kv.go:137,test.go:1251: Goexit() was called

[cockroach-teamcity]

SHA: https://github.com/cockroachdb/cockroach/commits/9671342fead0509bec0913bae4ae1f244660788e

Parameters:

To repro, try:

# Don't forget to check out a clean suitable branch and experiment with the
# stress invocation until the desired results present themselves. For example,
# using stress instead of stressrace and passing the '-p' stressflag which
# controls concurrency.
./scripts/gceworker.sh start && ./scripts/gceworker.sh mosh
cd ~/go/src/github.com/cockroachdb/cockroach && \
stdbuf -oL -eL \
make stressrace TESTS=kv0/enc=false/nodes=3/size=64kb PKG=roachtest TESTTIMEOUT=5m STRESSFLAGS='-maxtime 20m -timeout 10m' 2>&1 | tee /tmp/stress.log

Failed test: https://teamcity.cockroachdb.com/viewLog.html?buildId=1298500&tab=buildLog

The test failed on branch=release-19.1, cloud=gce:
	cluster.go:1474,kv.go:69,cluster.go:1812,errgroup.go:57: /home/agent/work/.go/src/github.com/cockroachdb/cockroach/bin/roachprod run teamcity-1298500-kv0-enc-false-nodes-3-size-64kb:4 -- ./workload run kv --init --splits=1000 --histograms=logs/stats.json --concurrency=192 --duration=10m --read-percent=0 --min-block-bytes=65536 --max-block-bytes=65536 {pgurl:1-3} returned:
		stderr:
		
		stdout:
		I190521 11:00:46.738182 1 workload/workload.go:562  starting 1000 splits
		Error: ALTER TABLE kv SPLIT AT VALUES (9214157878976512): pq: splits would be immediately discarded by merge queue; disable the merge queue first by running 'SET CLUSTER SETTING kv.range_merge.queue_enabled = false'
		Error:  ssh verbose log retained in /root/.roachprod/debug/ssh_34.74.112.162_2019-05-21T11:00:45Z: exit status 1
		: exit status 1
	cluster.go:1833,kv.go:72,kv.go:137,test.go:1251: Goexit() was called

[nvanbenschoten]

Fixed by #37684.