xxgreg opened a new issue, #40563:
URL: https://github.com/apache/arrow/issues/40563
### Describe the bug, including details regarding any error messages,
version, and platform.
`array.Float64.MarshallJSON()` returns the following error for the example
code below:
```
json: unsupported value: NaN
```
```go
package main
import (
"fmt"
"math"
"github.com/apache/arrow/go/v16/arrow/array"
"github.com/apache/arrow/go/v16/arrow/memory"
)
func main() {
builder := array.NewFloat64Builder(memory.DefaultAllocator)
builder.Append(math.NaN())
array_ := builder.NewArray()
bs, err := array_.MarshalJSON()
if err != nil {
fmt.Println("error:", err)
}
fmt.Println(string(bs))
}
```
Consider updating the marshalling code for Float64 and other floating point
array types with something like:
```
func (a *array.Float64) MarshalJSON() ([]byte, error) {
vals := make([]any, a.Len())
for i := 0; i < a.Len(); i++ {
if !a.IsValid(i) {
vals[i] = nil
continue
}
f := a.Value(i)
switch {
case math.IsNaN(f):
vals[i] = "NaN"
case math.IsInf(f, 1):
vals[i] = "+Inf"
case math.IsInf(f, -1):
vals[i] = "-Inf"
default:
vals[i] = f
}
}
return json.Marshal(vals)
}
```
### Component(s)
Go
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