Please answer these questions before submitting pull request - Why submit this pull request? - [ ] Bug fix - [ ] New feature provided - [ ] Improve performance
- Related issues ___ ### Bug fix - Bug description. - How to fix? ___ ### New feature or improvement - Describe the details and related test reports. [ Full content available at: https://github.com/apache/incubator-skywalking/pull/1728 ] This message was relayed via gitbox.apache.org for devnull@infra.apache.org
