[KYLIN-2130] QueryMetrics concurrent bug fix

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: v1.5.4, v1.5.4.1
• Fix Version/s: v1.6.0
• Component/s: Query Engine
• Assignee: Kaisen Kang
• Reporter: Kaisen Kang
• Created: 27/Oct/16 02:36
• Updated: 26/Nov/16 08:12
• Resolved: 04/Nov/16 06:30

Description

Recently，I made a concurrent kylin query test and found a little bug in QueryMetrics:
If the initial query to a cube or a project is concurrent, the QueryMetric will register failed and throw a MetricsException.

The exception is like this:
"exception":"Metrics source kylin_test,sub=xxxxxxx already exists!"