[SPARK-38847] Introduce a `viewToSeq` function for `KVUtils`

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.4.0
• Fix Version/s: 3.4.0
• Component/s: Spark Core, SQL
• Assignee: Yang Jie
• Reporter: Yang Jie
• Created: 10/Apr/22 13:47
• Updated: 12/Apr/22 14:25
• Resolved: 12/Apr/22 14:25

Description

There are many codes in spark that convert KVStoreView into `List`, and these codes will not close `KVStoreIterator`, these resources are mainly recycled by `finalize()` method implemented in `LevelDB` and `RockSB`, this makes `KVStoreIterator` resource recycling unpredictable.

Issue Links

• links to: [Github] Pull Request #36132 (LuciferYang)