[HIVE-13813] Add Metrics for the number of Hive operations waiting for compile

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.3.0, 2.0.0
• Fix Version/s: 2.3.0
• Component/s: Query Processor
• Assignee: Chao Sun
• Reporter: Chao Sun
• Created: 20/May/16 21:54
• Updated: 21/Jul/17 17:45
• Resolved: 08/Aug/16 20:29

Description

Currently, without hive.driver.parallel.compilation introduced in HIVE-4239, only one SQL operation can enter the compilation block per HS2 instance, and all the rest will be blocked. We should add metrics info for the number of operations that are blocked.