[FALCON-2275] Unable to list instances of an extension

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: trunk, 0.10
• Fix Version/s: trunk, 0.11
• Component/s: extensions
• Assignee: Pracheer Agarwal
• Reporter: Pragya Mittal
• Created: 07/Feb/17 10:54
• Updated: 08/Feb/17 09:00
• Resolved: 08/Feb/17 08:54

Description

pragya.mittal@falcon1001:~$ falcon extension -instances -extensionName new-ext1 -jobName new-job1
ERROR: Bad Request;Unable to get instance for org.apache.falcon.workflow.engine.FalconWorkflowEngine

Stack trace :

2017-02-07 10:52:09,973 ERROR - [1004540855@qtp-1229202732-8 - 56871345-1444-4a93-89da-c43ae4303dbc:pragya.mittal:GET//extension/instances/new-job1] ~ Failed to get instances status (AbstractInstanceManager:186)
org.apache.falcon.FalconException: Unable to get instance for org.apache.falcon.workflow.engine.FalconWorkflowEngine
        at org.apache.falcon.util.ReflectionUtils.getInstanceByClassName(ReflectionUtils.java:52)
        at org.apache.falcon.workflow.WorkflowEngineFactory.getNativeWorkflowEngine(WorkflowEngineFactory.java:118)
        at org.apache.falcon.workflow.WorkflowEngineFactory.getWorkflowEngine(WorkflowEngineFactory.java:55)
        at org.apache.falcon.resource.AbstractEntityManager.getWorkflowEngine(AbstractEntityManager.java:1426)
        at org.apache.falcon.resource.AbstractInstanceManager.getStatus(AbstractInstanceManager.java:181)
        at org.apache.falcon.resource.proxy.ExtensionManagerProxy.getInstances(ExtensionManagerProxy.java:138)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)


        at org.mortbay.jetty.bio.SocketConnector$Connection.run(SocketConnector.java:228)
        at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
Caused by: java.lang.ClassNotFoundException: org.apache.falcon.workflow.engine.FalconWorkflowEngine
        at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        at org.apache.falcon.util.ReflectionUtils.getInstanceByClassName(ReflectionUtils.java:44)

Issue Links

• blocks: FALCON-2182 Add support for Falcon user extensions
• links to: GitHub Pull Request #359