[YARN-6293] Investigate Java 7 compatibility for new YARN UI

• Type: Sub-task
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Assignee: Unassigned
• Reporter: Li Lu
• Created: 06/Mar/17 21:40
• Updated: 07/Mar/17 02:52

Description

Right now when trying the YARN new UI with Java 7, I can get the following warning:

[INFO] --- maven-enforcer-plugin:1.4.1:enforce (dist-enforce) @ hadoop-yarn-ui ---
[WARNING] Rule 1: org.apache.maven.plugins.enforcer.RequireJavaVersion failed with message:
Detected JDK Version: 1.7.0-67 is not in the allowed range [1.8,).

While right now this warning does not cause any troubles for trunk integration, when some users would like to package the new UI with some branch-2 based code, the JDK requirement would block the effort. So the question here is, is there any specific component in new UI codebase that prevent us using Java 7? I remember it should be a JS based implementation, right?