Description of problem: When running "discovery -f" command on the JBoss ON Agent command line java.lang.NullPointerException is thrown when trying to send the report to the server. Version-Release number of selected component (if applicable): JBoss ON 3.1.2 How reproducible: Sometimes. Steps to Reproduce: 1. Execute JBoss ON Agent's "discovery -f" command; Actual results: Above command fails with java.lang.NullPointerException: ******************************************************* sending> discovery -f Full discovery run in [458] ms === Server Scan Inventory Report === Start Time: May 22, 2014 4:24:10 PM Finish Time: May 22, 2014 4:24:10 PM Resource Count: 21 Failed to execute prompt command [discovery -f]. Cause: java.lang.NullPointerException:null ******************************************************* Expected results: No exception is thrown and command is correctly executed. Additional info: It seems that sometimes, the connection between JBoss ON Agent and Server is lost and Agent is not able to send report to the server. JBoss ON Agent restart using --cleanconfig option resolves the issue.
Do we have a complete error and stack from the agent log? Does it match the stack in bug 644871?
Perhaps this is the same issue as the inventory sync issue reported in bug 1023332?
Upstream bug 800141 seems to also report the same issue which seems to have been reported as fixed. From its commit it appears the fix went into RHQ 4.4.0 which is what 3.1.2 was based on so either this issue isn't actually fixed or it can happen in other situations.
I performed a quick test and was not able to reproduce this over multiple tries. The customer case that reported this problem against 3.1.2 was actually running JBoss ON 3.0.1. Therefore the issue identified in comment 3 would have most likely applied but has since been fixed. Closing this as WORKSFORME. If someone is able to reproduce this on 3.1.2 or later, please feel free to file a new product bug or re-open this with complete details.