RyanLin5967 opened a new issue, #4195:
URL: https://github.com/apache/iceberg-python/issues/4195
### Apache Iceberg version
0.12.0 (latest release)
### Please describe the bug 🐞
Currently, a write to a missing branch takes no parent, so the new branch
holds only the rows just written. Creating the branch with `create_branch`
first gives `[1, 2, 3]`.
```python
import tempfile
import pyarrow as pa
from pyiceberg.catalog.sql import SqlCatalog
cat = SqlCatalog("c", uri="sqlite:///:memory:",
warehouse=f"file://{tempfile.mkdtemp()}")
cat.create_namespace("ns")
t = cat.create_table("ns.t", schema=pa.schema([("x", pa.int64())]))
t.append(pa.table({"x": [1, 2]}))
t.append(pa.table({"x": [3]}), branch="b")
print(t.scan().use_ref("b").to_arrow()["x"].to_pylist())
# [3], should be [1, 2, 3]
# Java's SnapshotUtil.latestSnapshot takes the current snapshot as the
parent of a missing branch
print(t.snapshot_by_name("b").parent_snapshot_id)
# None
```
`overwrite` does the same, and so does a retried append after a concurrent
`remove_branch`.
tested on pyiceberg 0.12.0 and main
### Willingness to contribute
- [ ] I can contribute a fix for this bug independently
- [ ] 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
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