github.com/cockroachdb/cockroach/pkg/ccl/importccl: _good_bytes_encoding failed under stress

[cockroach-teamcity]

SHA: https://github.com/cockroachdb/cockroach/commits/f818c4c3b946c40839921c72fc1322fb3b385ee6

Parameters:

TAGS=
GOFLAGS=-race

Failed test: https://teamcity.cockroachdb.com/viewLog.html?buildId=772409&tab=buildLog

=== RUN   TestImportData/CSV:_good_bytes_encoding
I180711 06:32:06.035401 697 sql/lease.go:312  [n1,client=127.0.0.1:52360,user=root] publish: descID=57 (t) version=2 mtime=2018-07-11 06:32:06.029041255 +0000 UTC
I180711 06:32:06.132030 1346 storage/replica_command.go:275  [split,n1,s1,r27/1:/Table/5{6-7/2/"STR…}] initiating a split of this range at key /Table/57 [r30]
I180711 06:32:06.179559 697 sql/event_log.go:126  [n1,client=127.0.0.1:52360,user=root] Event: "drop_table", target: 57, info: {TableName:d.public.t Statement:DROP TABLE IF EXISTS d.public.t User:root CascadeDroppedViews:[]}
I180711 06:32:06.209738 247 storage/replica_proposal.go:203  [n1,s1,r27/1:/Table/5{6-7/2/"STR…}] new range lease repl=(n1,s1):1 seq=3 start=1531290721.658934057,0 epo=1 pro=1531290721.660350222,0 following repl=(n1,s1):1 seq=3 start=1531290721.658934057,0 epo=1 pro=1531290721.660350222,0
I180711 06:32:06.311921 697 sql/lease.go:312  [n1,client=127.0.0.1:52360,user=root,scExec=] publish: descID=57 (t) version=3 mtime=2018-07-11 06:32:06.310899577 +0000 UTC
I180711 06:32:06.762759 1373 ccl/importccl/read_import_proc.go:82  [import-distsql,n1] could not fetch file size; falling back to per-file progress: bad ContentLength: -1
I180711 06:32:06.975388 1225 ccl/importccl/read_import_proc.go:82  [import-distsql,n1] could not fetch file size; falling back to per-file progress: bad ContentLength: -1
I180711 06:32:07.029797 1196 storage/replica_command.go:275  [n1,s1,r29/1:/{Table/58-Max}] initiating a split of this range at key /Table/59 [r31]
I180711 06:32:07.066197 241 storage/replica_proposal.go:203  [n1,s1,r29/1:/{Table/58-Max}] new range lease repl=(n1,s1):1 seq=3 start=1531290721.658934057,0 epo=1 pro=1531290721.660350222,0 following repl=(n1,s1):1 seq=3 start=1531290721.658934057,0 epo=1 pro=1531290721.660350222,0

[knz]

Dup #27360.

[knz]

Also #27498