Open Problems
Data Quality Monitoring Unresponsive
Symptoms
The DataQualityMonitoring application is unresponsive: No page is returned and the browser keeps on waiting for a response.
Probe is also unresponsive.
Cause
This seems to be due to some threads losing a socket connection with xrootd when trying to fetch root files to display histograms.
Looking at the log files for the DataQualityMonitoring application there is a proliferation of messages like:
WARNING: Waiting for response for 12 secs stat[wain019.slac.stanford.edu/172.23.2.19:1094:anonymous] Jun 25, 2008 10:25:00 AM org.glast.base.application.web.filter.ApplicationFilter doFilter
As probe is unresponsive to look at the log files you have to log-in glast-tomcat07, cd tomcat/BASE55/glastlnx09/logs and tail the most recent DataQualityMonitoring log file.
Solution
Restart glast-tomcat07 : from the ServerMonitoring application restart the glast-tomcat07 server by clicking on the recycle icon. If you don't see this icon it means you need to be added to the administrators list.