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Support Article

IllegalArgumentException generated in the logs

SA-100924

Summary



IllegalArgumentExceptions are generated in the Pega logs. As a result, a blue screen displays and users must log out and relog in to continue.


Error Messages



java.lang.IllegalArgumentException: There is no thread named "TABTHREAD1"
    at com.pega.pegarules.session.internal.mgmt.base.RequestorPassivation.removeInactiveThread(RequestorPassivation.java:790) ~[prprivate.jar:?]
    at com.pega.pegarules.session.internal.mgmt.PRRequestorImpl.removeInactiveThread(PRRequestorImpl.java:826) ~[prprivate.jar:?]
    at com.pegarules.generated.activity.ra_action_freeclipboard_dbb74b720036b41125f73cb5b58a0869.step5_circum0(ra_action_freeclipboard_dbb74b720036b41125f73cb5b58a0869.java:637) ~[?:?]
    at com.pegarules.generated.activity.ra_action_freeclipboard_dbb74b720036b41125f73cb5b58a0869.perform(ra_action_freeclipboard_dbb74b720036b41125f73cb5b58a0869.java:147) ~[?:?]
    at com.pega.pegarules.session.internal.mgmt.Executable.doActivity(Executable.java:2695) ~[prprivate.jar:?]
    at com.pega.pegarules.session.internal.mgmt.Executable.invokeActivity(Executable.java:10961) ~[prprivate.jar:?]
    at com.pegarules.generated.activity.ra_action_redirectandrun_961ec9cb5b6f14135240c2216100a0be.step3_circum0(ra_action_redirectandrun_961ec9cb5b6f14135240c2216100a0be.java:431) ~[?:?]
    at com.pegarules.generated.activity.ra_action_redirectandrun_961ec9cb5b6f14135240c2216100a0be.perform(ra_action_redirectandrun_961ec9cb5b6f14135240c2216100a0be.java:113) ~[?:?]



Steps to Reproduce



Allow the system to be in the Idle state for a few minutes.


Root Cause



A defect in Pegasystems’ code or rules.
The FreeClipboard activity displays the exceptions as part of the Thread cleanup.



Resolution



This feature is implemented in Pega Platform 8.2.6.

Published December 2, 2021

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