The test failed on branch=release-19.2, cloud=gce:
test artifacts and logs in: /home/agent/work/.go/src/github.com/cockroachdb/cockroach/artifacts/20191211-1637629/schemachange/invertedindex/run_1
	cluster.go:1783,inverted_index.go:85,cluster.go:2142,errgroup.go:57: /home/agent/work/.go/src/github.com/cockroachdb/cockroach/bin/roachprod run teamcity-1637629-1576049754-70-n5cpu4:5 -- ./workload run json --read-percent=50 --duration 1h0m0s {pgurl:1-4} --sequential returned:
		stderr:
		
		stdout:
		1.2      1.9      2.0      2.0 read
		  129.0s        0           20.0          464.8      5.2    906.0   1208.0   1208.0 write
		  130.0s        0            0.0          463.4      0.0      0.0      0.0      0.0 read
		  130.0s        0            0.0          461.2      0.0      0.0      0.0      0.0 write
		_elapsed___errors__ops/sec(inst)___ops/sec(cum)__p50(ms)__p95(ms)__p99(ms)_pMax(ms)
		  131.0s        0           26.0          460.1      1.2      2.8      3.0      3.0 read
		  131.0s        0           17.0          457.8      5.5   2415.9   2550.1   2550.1 write
		  132.0s        0           24.0          456.8      1.1      1.5      1.7      1.7 read
		  132.0s        0           19.0          454.5      4.7   3489.7   3623.9   3623.9 write
		  133.0s        0            0.0          453.4      0.0      0.0      0.0      0.0 read
		  133.0s        0            0.0          451.1      0.0      0.0      0.0      0.0 write
		Error: pq: TransactionStatusError: already committed (REASON_TXN_COMMITTED)
		Error:  exit status 1
		: exit status 1