[OODT-550] 'getFirstPage' Command Throws Exception After Restarting Server

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.5
• Fix Version/s: 0.11
• Component/s: workflow manager
• Assignee: Chris A. Mattmann
• Reporter: Michael Cayanan
• Created: 07/Jan/13 15:59
• Updated: 27/Aug/15 02:22
• Resolved: 27/Aug/15 02:22

Description

Running the getFirstPage command after restarting the Workflow Manager Server throws an exception. Below shows the set of commands to run to reproduce the issue:

% ./wmgr-client -u http://localhost:9001 --operation --getFirstPage
Page: [num=0,pageSize=0,totalPages=0]

% ./wmgr-client -u http://localhost:9001 -en urn:oodt:TestParallel --metaData --key numSeconds 15 -op -se
Sending event 'urn:oodt:TestParallel'... SUCCESS

% ./wmgr-client -u http://localhost:9001 --operation --getFirstPage
Page: [num=1,pageSize=20,totalPages=1]
Instance: [id=4e5a2d0c-4b47-11e2-977b-c39e66f8f1d5, status=STARTED, currentTask=urn:oodt:IntensiveTask, workflow=Parallel Single Task Processor Intensive Task, wallClockTime=0.09376666666666668, currentTaskWallClockTime=0.0]
Instance: [id=4e4e6d3b-4b47-11e2-977b-c39e66f8f1d5, status=FINISHED, currentTask=urn:oodt:GoodbyeWorld, workflow=HelloGoodbye, wallClockTime=0.0049, currentTaskWallClockTime=0.0]

% ./wmgr restart
-n Shutting down cas workflow manager: 
OK
-n Starting cas workflow manager: 
OK
Dec 21, 2012 12:21:50 AM org.apache.oodt.cas.workflow.system.XmlRpcWorkflowManager loadProperties
INFO: Loading Workflow Manager Configuration Properties from: [../etc/workflow.properties]
Dec 21, 2012 12:21:50 AM org.apache.oodt.cas.workflow.engine.ThreadPoolWorkflowEngineFactory getResmgrUrl
INFO: No Resource Manager URL provided or malformed URL: executing jobs locally. URL: []
Adding condition: [Timeout Condition] to parent workflow: [TestParallel]
Dec 21, 2012 12:21:50 AM org.apache.oodt.cas.workflow.system.XmlRpcWorkflowManager <init>
INFO: Workflow Manager started by mcayanan

% ./wmgr-client -u http://localhost:9001 --operation --getFirstPage
org.apache.xmlrpc.XmlRpcException: java.lang.Exception: java.lang.NullPointerException
at org.apache.xmlrpc.XmlRpcClientResponseProcessor.decodeException(XmlRpcClientResponseProcessor.java:104)
at org.apache.xmlrpc.XmlRpcClientResponseProcessor.decodeResponse(XmlRpcClientResponseProcessor.java:71)
at org.apache.xmlrpc.XmlRpcClientWorker.execute(XmlRpcClientWorker.java:73)
at org.apache.xmlrpc.XmlRpcClient.execute(XmlRpcClient.java:194)
at org.apache.xmlrpc.XmlRpcClient.execute(XmlRpcClient.java:185)
at org.apache.xmlrpc.XmlRpcClient.execute(XmlRpcClient.java:178)
at org.apache.oodt.cas.workflow.system.XmlRpcWorkflowManagerClient.getFirstPage(XmlRpcWorkflowManagerClient.java:122)
at org.apache.oodt.cas.workflow.cli.action.GetFirstPageCliAction.execute(GetFirstPageCliAction.java:47)
at org.apache.oodt.cas.cli.CmdLineUtility.execute(CmdLineUtility.java:331)
at org.apache.oodt.cas.cli.CmdLineUtility.run(CmdLineUtility.java:187)
at org.apache.oodt.cas.workflow.system.XmlRpcWorkflowManagerClient.main(XmlRpcWorkflowManagerClient.java:678)
ERROR: Failed to get first page of workflows : java.lang.Exception: java.lang.NullPointerException