Sunyue commented on issue #619:
URL: https://github.com/apache/arrow-go/issues/619#issuecomment-3701277102
Reading from an os.File can also end in same error. Please find program to
reproduce this issue below:
```go
package main
import (
"context"
"log"
"os"
"github.com/apache/arrow-go/v18/arrow/memory"
"github.com/apache/arrow-go/v18/parquet"
"github.com/apache/arrow-go/v18/parquet/file"
"github.com/apache/arrow-go/v18/parquet/pqarrow"
)
func main() {
pFile, err := os.Open("<path_to_file>")
if err != nil {
log.Fatal(err)
}
ctx := context.Background()
opts := &parquet.ReaderProperties{
BufferSize: 1024,
FileDecryptProps: nil,
BufferedStreamEnabled: true,
}
base, err := file.NewParquetReader(pFile, file.WithReadProps(opts))
if err != nil {
log.Fatal(err)
}
pReader, err := pqarrow.NewFileReader(base, pqarrow.ArrowReadProperties{
Parallel: true,
BatchSize: 3000,
}, memory.DefaultAllocator)
if err != nil {
log.Fatal(err)
}
numOfRowGroups := pReader.ParquetReader().NumRowGroups()
for rgIdx := range numOfRowGroups {
rReader, err := pReader.GetRecordReader(ctx, nil, []int{rgIdx})
if err != nil {
log.Fatal(err)
}
for rReader.Next() {
batch := rReader.RecordBatch()
log.Printf("got batch: %v records", batch.NumRows())
}
}
}
```
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