apache / apache/iceberg-python

Compatible File storage provider that do not support signature with trailer

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描述

### Feature Request / Improvement

When use fsspec io-impl, put object to File Storage Provider(FSP) not support

- [Signature calculations for trailing headers](https://docs.aws.amazon.com/AmazonS3/latest/API/sigv4-streaming-trailers.html)

- [checking-object-integrity-upload](https://docs.aws.amazon.com/AmazonS3/latest/userguide/checking-object-integrity-upload.html)

Put file like snapxxx.avro will not handle by FSP after upload(put object is success), the file some data signature related things are reserved.

When get snapxxx.avro to read and decoder, raise Error, Because the file contains signature information
```python
File "pyiceberg/avro/decoder_fast.pyx", line 150, in pyiceberg.avro.decoder_fast.CythonBinaryDecoder.read_utf8
cpdef str read_utf8(self):
File "pyiceberg/avro/decoder_fast.pyx", line 156, in pyiceberg.avro.decoder_fast.CythonBinaryDecoder.read_utf8
return self.read_bytes().decode("utf-8")
File "pyiceberg/avro/decoder_fast.pyx", line 130, in pyiceberg.avro.decoder_fast.CythonBinaryDecoder.read_bytes
return r[0:length]
SystemError: Negative size passed to PyBytes_FromStringAndSize
```

贡献指南

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调研方向

从 fsspec I/O 实现开始,针对不支持尾部 header 签名的文件存储提供商,复现 snapxxx.avro 文件的上传和下载。检查生成的对象以及 pyiceberg/avro/decoder_fast.pyx 中的失败。完成的标准是,通过此路径上传的对象可以由受影响的提供商在没有保留签名数据的情况下读取和解码。

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评估

技术栈
python
领域
backend
Issue 类型
缺陷
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4/5
预计耗时
3-5 天
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冷清
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需要澄清
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42/100

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