7phs opened a new issue, #38795:
URL: https://github.com/apache/arrow/issues/38795
### Describe the bug, including details regarding any error messages,
version, and platform.
Hello,
I found a data race in `databricks-sql-go`. A root cause of data race is
timestamp fields of `arrow.FixedWidthTypes` and the function `GetToTimeFunc()`
of `arrow.TimestampType`.
A test to reproduce a data race:
```
import (
"sync"
"testing"
"github.com/apache/arrow/go/v15/arrow"
)
func TestArrowDataRace(t *testing.T) {
var (
wg sync.WaitGroup
w = make(chan bool)
routineNum = 10
)
wg.Add(routineNum)
for i := 0; i < routineNum; i++ {
go func() {
defer wg.Done()
<-w
_, _ =
arrow.FixedWidthTypes.Timestamp_s.(*arrow.TimestampType).GetToTimeFunc()
}()
}
close(w)
wg.Wait()
}
```
A command to run this test with data race detector:
```
go test -race -run TestArrowDataRace .
```
A go version is 1.21.
The same issue is in Apache Arrow Go v12.
A root cause of data race is not initialised field `loc` of
`arrow.TimestampType`. It initialised in the first call of function
`arrow.TimestampType :: GetZone()`.
### Component(s)
Go
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