Troubleshooting thumbnail generation

The thumbnail generation tool generates extensive log messages. If an error or exception occurs during thumbnail generation, you can examine the trace.log that the generateFromSeedList script generates to determine possible causes.

trace.log location

You can find trace.log in the following location: /opt/IBM/WebSphere/AppServer/profiles/AppSrv01/logs/Cluster1_server1/trace.log

Troubleshooting

If you cannot see thumbnails for files that have been processed, take the following steps to check if thumbnails exist:

Look in trace.log. The log should contain IDs of all files processed by the thumbnail generation script. It should also indicate whether an event was successfully created for each file or not.

Example:


[10/15/14 14:59:23:959 EDT] 0000006a CrawlerImpl 2 Generating crawler event for media D6386A8E-2960-4B3A-AF1C-2834E231F08A
[10/15/14 14:59:23:959 EDT] 0000006a DocsCrawlerEv 2 storageRoot = /nfs/viewer_data/ccm_preview
[10/15/14 14:59:23:962 EDT] 0000006a DocsCrawlerEv 1 directory = /nfs/viewer_data/ccm_preview/62/177/idd_D6386A8E-2960-4B3A-AF1C-2834E231F08A@ICObjectStore
[10/15/14 14:59:23:962 EDT] 0000006a DocsCrawlerEv I CLFWY0853I: DocsCrawlerEventVetoListener is  allowing event on [fileId=D6386A8E-2960-4B3A-AF1C-2834E231F08A ,  
fileTitle=black-belle-ringlets.jpg, libraryId=EBA06B79-46F2-4879-AE76-353D61D31ED1] because directory /nfs/viewer_data/ccm_preview/62/177/
idd_D6386A8E-2960-4B3A-AF1C-2834E231F08A@ICObjectStore does not exist
[10/15/14 14:59:23:985 EDT] 0000006a DefaultEvent > com.ibm.lconn.events.internal.object.DefaultEvent DefaultEvent ENTRY  
EXTERNAL UPDATE PRIVATE ecm_files.add.file.ecm.file.added.to.teamspace
[10/15/14 14:59:23:986 EDT] 0000006a DocsAsyncCraw 1 Created uploadEvent:ID is: 4e2c89a9-908e-4381-b3ba-c1420d7de1ac
File name: ecm_files.add.file.ecm.file.added.to.teamspace D6386A8E-2960-4B3A-AF1C-2834E231F08A black-belle-ringlets.jpg
[10/15/14 14:59:23:986 EDT] 0000006a Events > com.ibm.lconn.events.internal.impl.Events invokeAsync ENTRY 
com.ibm.lconn.events.internal.object.DefaultEvent@3a2d9c19 false
[10/15/14 14:59:23:986 EDT] 0000006a AsyncEventInv > com.ibm.lconn.events.internal.invoke.async.AsyncEventInvokerFactory getInvoker ENTRY
[10/15/14 14:59:23:986 EDT] 0000006a AsyncEventInv < com.ibm.lconn.events.internal.invoke.async.AsyncEventInvokerFactory getInvoker RETURN 
com.ibm.lconn.events.internal.publish.impl.EJBBasedJMSPublisher@927ac410
[10/15/14 14:59:23:987 EDT] 0000006a JMSPublisherB > com.ibm.lconn.events.internal.publish.impl.JMSPublisherBean publishEvent ENTRY
com.ibm.lconn.events.internal.object.DefaultEvent@3a2d9c19 true
[10/15/14 14:59:23:987 EDT] 0000006a JMSPublisher > com.ibm.lconn.events.internal.publish.impl.JMSPublisher publishEvent ENTRY
com.ibm.lconn.events.internal.object.DefaultEvent@3a2d9c19 true
[10/15/14 14:59:23:987 EDT] 0000006a JMSPublisher > com.ibm.lconn.events.internal.publish.impl.JMSPublisher buildTopicName ENTRY
com.ibm.lconn.events.internal.object.DefaultEvent@3a2d9c19
[10/15/14 14:59:23:987 EDT] 0000006a ConfigHelper > com.ibm.lconn.events.internal.utils.ConfigHelper useMQ ENTRY
[10/15/14 14:59:23:987 EDT] 0000006a ConfigHelper < com.ibm.lconn.events.internal.utils.ConfigHelper useMQ RETURN false
[10/15/14 14:59:23:987 EDT] 0000006a JMSPublisher < com.ibm.lconn.events.internal.publish.impl.JMSPublisher buildTopicName RETURN
EXTERNAL/UPDATE/ecm_files.add.file.ecm.file.added.to.teamspace
[10/15/14 14:59:23:987 EDT] 0000006a EventMapUtils > com.ibm.lconn.events.internal.utils.EventMapUtils createMapFromEvent ENTRY
com.ibm.lconn.events.internal.object.DefaultEvent@3a2d9c19
[10/15/14 14:59:23:988 EDT] 0000006a EventMapUtils < com.ibm.lconn.events.internal.utils.EventMapUtils createMapFromEvent RETURN 
Event map for event: 4e2c89a9-908e-4381-b3ba-c1420d7de1ac, ecm_files.add.file.ecm.file.added.to.teamspace
[10/15/14 14:59:23:988 EDT] 0000006a JMSPublisher 3 com.ibm.lconn.events.internal.publish.impl.JMSPublisher publishEvent

If you have events for Connections Content Manager (CCM) enabled, you should see the event logged by the event metrics.

Example:


***************Event data***************
_er_id:
4e2c89a9-908e-4381-b3ba-c1420d7de1ac
_er_time: 1413399563985
_er_original_published_time: null
_er_source: EXTERNAL
_er_type: UPDATE
_er_name: ecm_files.add.file.ecm.file.added.to.teamspace
_er_scope: PRIVATE
_er_related_community: null
_er_actor: null
_er_actor_name: null
_er_actor_email: null
_er_impersonator_extid: null
_er_properties: {"isMinorUpdate":"true"}