reiades opened a new issue, #43520:
URL: https://github.com/apache/arrow/issues/43520
### Describe the bug, including details regarding any error messages,
version, and platform.
Hello!
I am currently using `github.com/apache/arrow/go/v16/parquet` to read the
records of a downloaded s3 parquet file (75KB, stored in `bytes.Buffer`). My
implementation is the following:
```
mem := memory.NewCheckedAllocator(memory.DefaultAllocator)
pf, err := file.NewParquetReader(bytes.NewReader(buf.Bytes()),
file.WithReadProps(parquet.NewReaderProperties(mem)))
if err != nil {
return nil, err
}
defer pf.Close()
reader, err := pqarrow.NewFileReader(pf,
pqarrow.ArrowReadProperties{Parallel: true, BatchSize: pf.NumRows()}, mem)
if err != nil {
return nil, err
}
rr, err := reader.GetRecordReader(ctx, nil, nil)
if err != nil {
return nil, err
}
defer rr.Release()
rec, err = rr.Read() <---- problem line
if err != nil && err != io.EOF {
return nil, err
}
if rec == nil {
return nil, nil
}
defer rec.Release()
... parse the file
```
I am reading the same file each time and majority of the reads into `rec`
are successful. However, on occasion, I get a segmentation fault inside of
`rr.Read()`. I have confirmed that the file is successfully downloaded each
time and that `buf.Bytes()` is the same on successful and failed reads. I have
also confirmed that I can get the schema from the file on successful and failed
reads which leads me more to believe something is happening inside the
`RecordReader`.
```
schema := pf.MetaData().Schema
log.Info(fmt.Sprintf("Schema:%s", schema)) <--- prints out the right schema
each time
```
Here are some logs from the stack trace that I thought could be helpful for
debugging.
```
SIGSEGV: segmentation violation
PC=0x4cb0c8 m=11 sigcode=1 addr=0x7ffbfdf94013e8
goroutine 150888 gp=0x4006db0a80 m=11 mp=0x4000780808 [runnable]:
github.com/apache/arrow/go/v16/parquet/internal/bmi.extractBitsGo(0xffffffffffffffff?,
0xffffffffffffffff?)
/go/pkg/mod/github.com/apache/arrow/go/v16@v16.1.0/parquet/internal/bmi/bmi.go:242
+0xcc fp=0x41bc72bae0 sp=0x41bc72bae0 pc=0x12818ac
github.com/apache/arrow/go/v16/parquet/internal/bmi.ExtractBits(...)
/go/pkg/mod/github.com/apache/arrow/go/v16@v16.1.0/parquet/internal/bmi/bmi.go:38
github.com/apache/arrow/go/v16/parquet/file.defLevelsBatchToBitmap({0x45f221c000?,
0x1?, 0x1?}, 0x400, {0xbc72bbb8?, 0x41?, 0x0?, 0x874c?}, {0x3b0f7d0,
0x41bcba5cc0}, ...)
/go/pkg/mod/github.com/apache/arrow/go/v16@v16.1.0/parquet/file/level_conversion.go:155
+0x180 fp=0x41bc72bb70 sp=0x41bc72bae0 pc=0x12f2ad0
github.com/apache/arrow/go/v16/parquet/file.defLevelsToBitmapInternal({0x45f221c000,
0x400, 0x2c000}, {0x1?, 0x0?, 0x0?, 0x1?}, 0x41bc72bcc0, 0x1)
/go/pkg/mod/github.com/apache/arrow/go/v16@v16.1.0/parquet/file/level_conversion.go:175
+0x198 fp=0x41bc72bc40 sp=0x41bc72bb70 pc=0x12f2d68
github.com/apache/arrow/go/v16/parquet/file.DefLevelsToBitmap(...)
/go/pkg/mod/github.com/apache/arrow/go/v16@v16.1.0/parquet/file/level_conversion.go:186
github.com/apache/arrow/go/v16/parquet/file.(*recordReader).ReadRecordData(0x41bb5c8000,
0x11)
/go/pkg/mod/github.com/apache/arrow/go/v16@v16.1.0/parquet/file/record_reader.go:545
+0x218 fp=0x41bc72bd40 sp=0x41bc72bc40 pc=0x12f8aa8
github.com/apache/arrow/go/v16/parquet/file.(*recordReader).ReadRecords(0x41bb5c8000,
0xce)
/go/pkg/mod/github.com/apache/arrow/go/v16@v16.1.0/parquet/file/record_reader.go:632
+0x294 fp=0x41bc72bde0 sp=0x41bc72bd40 pc=0x12f8e84
github.com/apache/arrow/go/v16/parquet/pqarrow.(*leafReader).LoadBatch(0x41bb5c8060,
0xce)
/go/pkg/mod/github.com/apache/arrow/go/v16@v16.1.0/parquet/pqarrow/column_readers.go:104
+0xd8 fp=0x41bc72be30 sp=0x41bc72bde0 pc=0x1767e48
github.com/apache/arrow/go/v16/parquet/pqarrow.(*listReader).LoadBatch(0x41bc72bee8?,
0x41bc72bf3c?)
/go/pkg/mod/github.com/apache/arrow/go/v16@v16.1.0/parquet/pqarrow/column_readers.go:360
+0x2c fp=0x41bc72be50 sp=0x41bc72be30 pc=0x17690fc
github.com/apache/arrow/go/v16/parquet/pqarrow.(*ColumnReader).NextBatch(0x41b9013190,
0xce)
/go/pkg/mod/github.com/apache/arrow/go/v16@v16.1.0/parquet/pqarrow/file_reader.go:131
+0x34 fp=0x41bc72be70 sp=0x41bc72be50 pc=0x176e9d4
github.com/apache/arrow/go/v16/parquet/pqarrow.(*recordReader).next.func1(0x5,
0x41bc72bf38?)
/go/pkg/mod/github.com/apache/arrow/go/v16@v16.1.0/parquet/pqarrow/file_reader.go:655
+0x50 fp=0x41bc72bef0 sp=0x41bc72be70 pc=0x17729a0
github.com/apache/arrow/go/v16/parquet/pqarrow.(*recordReader).next.func2()
/go/pkg/mod/github.com/apache/arrow/go/v16@v16.1.0/parquet/pqarrow/file_reader.go:708
+0x100 fp=0x41bc72bfd0 sp=0x41bc72bef0 pc=0x1772850
runtime.goexit({})
/root/.gimme/versions/go1.22.5.linux.arm64/src/runtime/asm_arm64.s:1222
+0x4 fp=0x41bc72bfd0 sp=0x41bc72bfd0 pc=0x4df0a4
created by
github.com/apache/arrow/go/v16/parquet/pqarrow.(*recordReader).next in
goroutine 253
/go/pkg/mod/github.com/apache/arrow/go/v16@v16.1.0/parquet/pqarrow/file_reader.go:699
+0x2e8
...
```
It seems that the segmentation fault is happening inside of
`(*recordReader).next` so was curious if anyone familiar with this library had
some insight on why this was happening. I can share a longer stack trace if
that would be helpful. I am also using v16 but saw the same error in v13 as
well. Thanks in advance!
### Component(s)
Go
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