Ian Boston created SLING-5018:
---------------------------------
Summary: JobManager.findJobs throws exception when job gets
removed while querying.
Key: SLING-5018
URL: https://issues.apache.org/jira/browse/SLING-5018
Project: Sling
Issue Type: Bug
Components: Engine
Affects Versions: Event 3.7.4
Environment: Oak on MongoMK with custom compound indexes to speed up
queries.
Reporter: Ian Boston
The following exception is seen with a system under light Job Load viewing a
page that needs to list jobs.
{code}
10.09.2015 16:10:51.634 *ERROR* [160.46.173.180 [1441894183258] GET
/libs/wcm/core/content/reference.json HTTP/1.1]
org.apache.sling.engine.impl.SlingRequestProcessorImpl service: Uncaught
Throwable
javax.servlet.ServletException: java.lang.IllegalStateException: Failed to
retrieve path from Item:
at
com.day.cq.wcm.core.impl.reference.ActivationReferenceSearchServlet.doGet(ActivationReferenceSearchServlet.java:167)
at
org.apache.sling.api.servlets.SlingSafeMethodsServlet.mayService(SlingSafeMethodsServlet.java:268)
at
org.apache.sling.api.servlets.SlingSafeMethodsServlet.service(SlingSafeMethodsServlet.java:344)
at
org.apache.sling.api.servlets.SlingSafeMethodsServlet.service(SlingSafeMethodsServlet.java:375)
at
org.apache.sling.engine.impl.request.RequestData.service(RequestData.java:533)
at
org.apache.sling.engine.impl.filter.SlingComponentFilterChain.render(SlingComponentFilterChain.java:45)
at
org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:64)
at
com.day.cq.personalization.impl.TargetComponentFilter.doFilter(TargetComponentFilter.java:96)
at
org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:60)
at
com.day.cq.wcm.core.impl.WCMDebugFilter.doFilter(WCMDebugFilter.java:146)
...
Caused by: java.lang.IllegalStateException: Failed to retrieve path from Item:
at
org.apache.sling.jcr.resource.internal.helper.jcr.JcrItemResource.getPath(JcrItemResource.java:82)
at
org.apache.sling.event.impl.jobs.JobManagerImpl.findJobs(JobManagerImpl.java:662)
at
com.day.cq.replication.impl.queue.ReplicationQueueImpl.entries(ReplicationQueueImpl.java:156)
at
com.day.cq.replication.impl.ReplicationStatusImpl.getQueueStatus(ReplicationStatusImpl.java:86)
at
com.day.cq.replication.impl.ReplicationStatusImpl.getPending(ReplicationStatusImpl.java:113)
at
com.day.cq.replication.impl.ReplicationStatusImpl.isPending(ReplicationStatusImpl.java:100)
at
com.day.cq.replication.impl.ReplicationStatusImpl.isDelivered(ReplicationStatusImpl.java:144)
at
com.day.cq.wcm.core.impl.reference.ActivationReferenceSearchServlet.doGet(ActivationReferenceSearchServlet.java:135)
... 131 common frames omitted
Caused by: javax.jcr.InvalidItemStateException: This item
[/var/eventing/jobs/assigned/7757d5f4-10a2-44c3-bb55-931db8d80a01/com.day.cq.replication.job.publish1/2015/9/10/16/10/7757d5f4-10a2-44c3-bb55-931db8d80a01_8]
does not exist anymore
at
org.apache.jackrabbit.oak.jcr.delegate.ItemDelegate.checkAlive(ItemDelegate.java:85)
at
org.apache.jackrabbit.oak.jcr.session.operation.ItemOperation.checkPreconditions(ItemOperation.java:34)
at
org.apache.jackrabbit.oak.jcr.delegate.SessionDelegate.perform(SessionDelegate.java:290)
at
org.apache.jackrabbit.oak.jcr.session.ItemImpl.perform(ItemImpl.java:113)
at
org.apache.jackrabbit.oak.jcr.session.ItemImpl.getPath(ItemImpl.java:153)
at
org.apache.jackrabbit.oak.jcr.session.NodeImpl.getPath(NodeImpl.java:99)
at
org.apache.sling.jcr.resource.internal.helper.jcr.JcrItemResource.getPath(JcrItemResource.java:80)
... 138 common frames omitted
{code}
Investigation indicates that the Job was removed concurrently by the Job
completing successfully while the UI query was being performed.
This issue was also reported in SLING-4853 in 3.7.2 but not fixed there at the
time as it was thought the exception wasn't thrown. SLING-4853 did fix a
different list jobs operation.
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