data race in expression/builtin_cast_vec_test.go

[zhouqiang-cl]

Bug Report

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[2021-10-27T02:27:43.503Z] WARNING: DATA RACE
[2021-10-27T02:27:43.503Z] Read at 0x00c000320000 by goroutine 94:
[2021-10-27T02:27:43.503Z]   math/rand.(*rngSource).Uint64()
[2021-10-27T02:27:43.503Z]       /usr/local/go/src/math/rand/rng.go:239 +0x3e
[2021-10-27T02:27:43.503Z]   math/rand.(*rngSource).Int63()
[2021-10-27T02:27:43.503Z]       /usr/local/go/src/math/rand/rng.go:234 +0x1d9
[2021-10-27T02:27:43.503Z]   math/rand.(*Rand).Int63()
[2021-10-27T02:27:43.503Z]       /usr/local/go/src/math/rand/rand.go:85 +0xbc
[2021-10-27T02:27:43.503Z]   math/rand.(*Rand).Float64()
[2021-10-27T02:27:43.503Z]       /usr/local/go/src/math/rand/rand.go:196 +0xc2
[2021-10-27T02:27:43.503Z]   github.com/pingcap/tidb/expression.(*decimalJSONGener).gen()
[2021-10-27T02:27:43.503Z]       /home/jenkins/agent/workspace/tidb-unit-test-nightly/go/src/github.com/pingcap/tidb/expression/bench_test.go:360 +0x45
[2021-10-27T02:27:43.503Z]   github.com/pingcap/tidb/expression.fillColumnWithGener()
[2021-10-27T02:27:43.503Z]       /home/jenkins/agent/workspace/tidb-unit-test-nightly/go/src/github.com/pingcap/tidb/expression/bench_test.go:1005 +0x158
[2021-10-27T02:27:43.503Z]   github.com/pingcap/tidb/expression.fillColumn()
[2021-10-27T02:27:43.503Z]       /home/jenkins/agent/workspace/tidb-unit-test-nightly/go/src/github.com/pingcap/tidb/expression/bench_test.go:993 +0x104
[2021-10-27T02:27:43.503Z]   github.com/pingcap/tidb/expression.genVecExprBenchCase()
[2021-10-27T02:27:43.503Z]       /home/jenkins/agent/workspace/tidb-unit-test-nightly/go/src/github.com/pingcap/tidb/expression/bench_test.go:1082 +0x438
[2021-10-27T02:27:43.503Z]   github.com/pingcap/tidb/expression.testVectorizedEvalOneVec()
[2021-10-27T02:27:43.504Z]       /home/jenkins/agent/workspace/tidb-unit-test-nightly/go/src/github.com/pingcap/tidb/expression/bench_test.go:1107 +0x199
[2021-10-27T02:27:43.504Z]   github.com/pingcap/tidb/expression.TestVectorizedBuiltinCastEvalOneVec()
[2021-10-27T02:27:43.504Z]       /home/jenkins/agent/workspace/tidb-unit-test-nightly/go/src/github.com/pingcap/tidb/expression/builtin_cast_vec_test.go:153 +0x54
[2021-10-27T02:27:43.504Z]   testing.tRunner()
[2021-10-27T02:27:43.504Z]       /usr/local/go/src/testing/testing.go:1193 +0x202
[2021-10-27T02:27:43.504Z] 
[2021-10-27T02:27:43.504Z] Previous write at 0x00c000320000 by goroutine 122:
[2021-10-27T02:27:43.504Z]   math/rand.(*rngSource).Uint64()
[2021-10-27T02:27:43.504Z]       /usr/local/go/src/math/rand/rng.go:239 +0x54
[2021-10-27T02:27:43.504Z]   math/rand.(*rngSource).Int63()
[2021-10-27T02:27:43.504Z]       /usr/local/go/src/math/rand/rng.go:234 +0x1d9
[2021-10-27T02:27:43.504Z]   math/rand.(*Rand).Int63()
[2021-10-27T02:27:43.504Z]       /usr/local/go/src/math/rand/rand.go:85 +0xbc
[2021-10-27T02:27:43.504Z]   math/rand.(*Rand).Float64()
[2021-10-27T02:27:43.504Z]       /usr/local/go/src/math/rand/rand.go:196 +0xc2
[2021-10-27T02:27:43.504Z]   github.com/pingcap/tidb/expression.(*decimalJSONGener).gen()
[2021-10-27T02:27:43.504Z]       /home/jenkins/agent/workspace/tidb-unit-test-nightly/go/src/github.com/pingcap/tidb/expression/bench_test.go:360 +0x45
[2021-10-27T02:27:43.504Z]   github.com/pingcap/tidb/expression.fillColumnWithGener()
[2021-10-27T02:27:43.504Z]       /home/jenkins/agent/workspace/tidb-unit-test-nightly/go/src/github.com/pingcap/tidb/expression/bench_test.go:1005 +0x158
[2021-10-27T02:27:43.504Z]   github.com/pingcap/tidb/expression.fillColumn()
[2021-10-27T02:27:43.504Z]       /home/jenkins/agent/workspace/tidb-unit-test-nightly/go/src/github.com/pingcap/tidb/expression/bench_test.go:993 +0x104
[2021-10-27T02:27:43.504Z]   github.com/pingcap/tidb/expression.genVecBuiltinFuncBenchCase()
[2021-10-27T02:27:43.504Z]       /home/jenkins/agent/workspace/tidb-unit-test-nightly/go/src/github.com/pingcap/tidb/expression/bench_test.go:1223 +0x417
[2021-10-27T02:27:43.504Z]   github.com/pingcap/tidb/expression.testVectorizedBuiltinFunc()
[2021-10-27T02:27:43.504Z]       /home/jenkins/agent/workspace/tidb-unit-test-nightly/go/src/github.com/pingcap/tidb/expression/bench_test.go:1344 +0x5a4
[2021-10-27T02:27:43.504Z]   github.com/pingcap/tidb/expression.TestVectorizedBuiltinCastFunc()
[2021-10-27T02:27:43.504Z]       /home/jenkins/agent/workspace/tidb-unit-test-nightly/go/src/github.com/pingcap/tidb/expression/builtin_cast_vec_test.go:157 +0x54
[2021-10-27T02:27:43.504Z]   testing.tRunner()
[2021-10-27T02:27:43.504Z]       /usr/local/go/src/testing/testing.go:1193 +0x202

1. Minimal reproduce step (Required)

in ci https://ci.pingcap.net/blue/rest/organizations/jenkins/pipelines/tidb-unit-test-nightly/runs/13151/nodes/114/steps/461/log/?start=0

2. What did you expect to see? (Required)

3. What did you see instead (Required)

4. What is your TiDB version? (Required)

master

[tisonkun]

Can be resolved by #29276 . Waiting for review =。=

[github-actions]

Please check whether the issue should be labeled with 'affects-x.y' or 'fixes-x.y.z', and then remove 'needs-more-info' label.