[Bug] Hive returns zero rows for partition values containing escaped characters

[thswlsqls]

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Paimon version
master @ a5e87eb (2.1-SNAPSHOT)

Compute Engine
Hive

Minimal reproduce step

1. Create a Paimon table with metastore.partitioned-table = true and a string partition column pt.
2. Write pt = '2026-01-01 00:00'. PartitionPathUtils.escapePathName() makes the directory pt=2026-01-01 00%3A00.
3. From Hive: SELECT * FROM t WHERE pt = '2026-01-01 00:00'.

HiveSplitGenerator.createPartitionPredicate() (.../hive/utils/HiveSplitGenerator.java line 131) splits the Hive input dir by / and = by hand and never unescapes, so the predicate uses 2026-01-01 00%3A00.

What doesn't meet your expectations?
Expected the committed rows. Actual: zero splits and zero rows, with no exception — a silent wrong result.

Anything else?
This is the only remaining production site that parses a partition path by hand. Every other site, including HiveUtils.extractTagName() in the same module, uses PartitionPathUtils.extractPartitionSpecFromPath(), which unescapes.

Are you willing to submit a PR?

• I'm willing to submit a PR!