[Bug] Java metadata scan fails on temporary files created by Python

[zhoulii]

Search before asking

• I searched in the issues and found nothing similar.

Paimon version

1.4

Compute Engine

flink

Minimal reproduce step

1. PyPaimon writes snapshot-32494 atomically and leaves a temporary file:

snapshot-32494d686aba1-b44a-40a4-a4f1-d854830aa5cb.tmp

2. Java scans the snapshot directory through SnapshotManager or FileUtils.listVersionedFiles.

3. Java treats the temporary file as a snapshot and throws:

NumberFormatException: For input string:
"32494d686aba1-b44a-40a4-a4f1-d854830aa5cb.tmp"

What doesn't meet your expectations?

Python and Java should use the same temporary-file naming convention. Temporary
files should not be treated as versioned metadata files, and Java should skip
invalid version filenames instead of throwing NumberFormatException.

Anything else?

No response

Are you willing to submit a PR?

• I'm willing to submit a PR!