[PARQUET-2208] Add details to nested column encryption config doc and exception text

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.12.3
• Fix Version/s: 1.13.0
• Component/s: parquet-mr
• Assignee: Gidon Gershinsky
• Reporter: Gidon Gershinsky
• Created: 31/Oct/22 07:27
• Updated: 12/Apr/23 01:30
• Resolved: 26/Mar/23 06:00

Description

Parquet columnar encryption requires an explicit full path for each column to be encrypted. If a partial path is configured, the thrown exception is not informative enough, doesn't help much in correcting the parameters.
The goal is to make the exception print something like:
Caused by: org.apache.parquet.crypto.ParquetCryptoRuntimeException: Encrypted column [rider] not in file schema column list: [foo] , [rider.list.element.foo] , [rider.list.element.bar] , [ts] , [uuid]