apache / apache/iceberg-python

Possible read-after-write consistency issue with multiple schema migration steps in Iceberg tables on AWS Glue + S3

Aperta
#2,599 2 commenti 0 reazioni 0 assegnatari Vedi su GitHub
Lingua principale
Python
Stelle
1.1k
Fork
581
Merge medio
1g 17h
PR unite (30g)
78

Descrizione

### 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

Guida per i contributori

Nessuna guida per i contributori indicizzata per questo repository

Valutazione

Questa issue non è ancora stata valutata.

Ricevi le nuove issue nella tua casella

Un breve riepilogo di issue GitHub adatte ai principianti.