[HIVE-25582] Empty result when using offset limit with MR

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.0.0
• Fix Version/s: 4.0.0-alpha-1
• Component/s: Operators
• Labels: pull-request-available
• Assignee: Zhihua Deng
• Reporter: Zhihua Deng
• Created: 01/Oct/21 00:54
• Updated: 17/Nov/22 08:48
• Resolved: 23/Nov/21 08:03

Description

The mr.ObjectCache caches nothing, every time when the limit retrieving global counter from the cache, a new AtomicInteger will be returned. This make offset <= currentCountForAllTasksInt always be evaluated to false, as offset > 0, the operator will skip all rows.

Issue Links

• links to: GitHub Pull Request #2693