[KYLIN-1666] Should check project selection before add a stream table

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: v1.5.0, v1.5.1
• Fix Version/s: v1.5.2
• Component/s: Web
• Assignee: Jason Zhong
• Reporter: Shao Feng Shi
• Created: 09/May/16 06:37
• Updated: 26/May/16 09:16
• Resolved: 09/May/16 12:53

Description

In Kylin web, if not select a "project", the page will display "Please select your project first", but I still be able to click "Add streaming table"; when save the table info, a NPE was thrown:

java.lang.NullPointerException
	at java.util.concurrent.ConcurrentSkipListMap.comparable(ConcurrentSkipListMap.java:659)
	at java.util.concurrent.ConcurrentSkipListMap.doGet(ConcurrentSkipListMap.java:821)
	at java.util.concurrent.ConcurrentSkipListMap.get(ConcurrentSkipListMap.java:1626)
	at org.apache.kylin.common.restclient.SingleValueCache.get(SingleValueCache.java:85)
	at org.apache.kylin.metadata.project.ProjectManager.getProject(ProjectManager.java:138)
	at org.apache.kylin.metadata.project.ProjectManager.addTableDescToProject(ProjectManager.java:280)
	at org.apache.kylin.rest.service.CubeService.syncTableToProject(CubeService.java:580)
	at org.apache.kylin.rest.service.CubeService$$FastClassByCGLIB$$17a07c0e.invoke(<generated>)
	at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)

Suggestion: don't allow user to take create actions if no project is selected.