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

["thswlsqls (via GitHub)" <gi...@apache.org>]

thswlsqls opened a new issue, #9077:
URL: https://github.com/apache/paimon/issues/9077

   **Search before asking**
   - [x] I searched in the [issues](https://github.com/apache/paimon/issues) and found nothing similar.
   
   **Paimon version**
   master @ a5e87ebf6 (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?**
   - [x] I'm willing to submit a PR!
   


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Re: [I] [Bug] Hive returns zero rows for partition values containing escaped characters [paimon]

["JingsongLi (via GitHub)" <gi...@apache.org>]

JingsongLi closed issue #9077: [Bug] Hive returns zero rows for partition values containing escaped characters
URL: https://github.com/apache/paimon/issues/9077


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