[KYLIN-5319] Occasional failure to query the real-time model, reporting NPE

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 5.0-alpha
• Component/s: Query Engine
• Assignee: Jiale He
• Reporter: Jiale He
• Created: 01/Dec/22 08:55
• Updated: 05/Dec/22 10:26
• Resolved: 05/Dec/22 10:26

Description

这个问题是因为
Segment Merge 完毕后，元数据更新结束的节点大量并发查询，
FilePruner中DataFlow变量的Segment元数据懒加载导致的。
因为懒加载导致dataflow中元数据不一致。

 

详细的RC分析和Fix Design 见附件