apache / apache/iceberg-python
Possible read-after-write consistency issue with multiple schema migration steps in Iceberg tables on AWS Glue + S3
- 主要語言
- Python
- 星號
- 1.1k
- 分支
- 581
- 平均合併
- 1 天 13 小時
- 30 天內合併 PR
- 76
描述
### Apache Iceberg version
Pyiceberg 0.10.0
Pyiceberg-core 0.6.0
### Please describe the bug 🐞
This may be a hard one to pin down but I noticed that multiple schema migration steps executed sequentially in the same `update_schema` context *sometimes* result in Exceptions like column name not found when using Iceberg tables on AWS Glue. An example:
```python
with table.update_schema() as update:
update.rename_column("some_column", "renamed_column")
update.move_first("renamed_column") # this sometimes fails with an error
# that renamed column doesn't exist
```
I have not noticed it with other back-ends like SQLite, leading me to believe it is a Glue issue specifically where a write may not yet be reflected by the time of the next operation.
### Willingness to contribute
- [ ] I can contribute a fix for this bug independently
- [x] I would be willing to contribute a fix for this bug with guidance from the Iceberg community
- [ ] I cannot contribute a fix for this bug at this time
貢獻指南
這個儲存庫沒有索引到貢獻指南
研究方向
從 table.update_schema() 流程開始,在 AWS Glue 和 S3 上重現先執行 rename_column、再執行 move_first 的順序範例,並與 SQLite 進行比較。追蹤第一次 schema 寫入是否在下一個操作之前可見。完成標準是解釋清楚該不一致性,並新增回歸測試,或明確記錄剩餘的後端限制。
由索引模型根據 Issue 內容生成。
評估
- 技術堆疊
- aws, python
- 領域
- cloud, databases
- Issue 類型
- 缺陷
- 難度
- 4/5
- 預估耗時
- 3-5 天
- 活躍度
- 冷清
- 描述清晰度
- 基本清楚
- 新手友好度
- 45/100