Skip to main content

This content has been archived and is no longer being updated. Links may not function; however, this content may be relevant to outdated versions of the product.

Support Article

ConcurrentModificationException errors in log

SA-31264

Summary



The user noticed ConcurrentModificationException errors in the log.


Error Messages



Tried to remove page: 'FilterClassPage' that is in use: java.util.ConcurrentModificationException
java.util.ConcurrentModificationException
at java.util.AbstractList$SimpleListIterator.next(AbstractList.java:64)
at com.pega.pegarules.data.internal.clipboard.ClipboardPageImpl.checkNamedPageForwardLinks(ClipboardPageImpl.java:5323)
at com.pega.pegarules.session.internal.mgmt.base.ThreadPageDir$PageReferenceListener.onBeforeRemove(ThreadPageDir.java:354)
at com.pega.pegarules.session.internal.mgmt.base.handler.AbstractPageHandler.onBeforeRemove(AbstractPageHandler.java:160)
at com.pega.pegarules.session.internal.mgmt.base.handler.UserPageHandler.removePage(UserPageHandler.java:77)
at com.pega.pegarules.session.internal.mgmt.base.AbstractPageDirectory.removeUserPageInCurrentDir(AbstractPageDirectory.java:343)
at com.pega.pegarules.session.internal.mgmt.base.AbstractPageDirectory.removePage(AbstractPageDirectory.java:245)
at com.pega.pegarules.session.internal.mgmt.base.AbstractPageDirectory.removePage(AbstractPageDirectory.java:383)
at com.pega.pegarules.session.internal.mgmt.base.AbstractPageDirectory.removeAllPages(AbstractPageDirectory.java:424)
at com.pega.pegarules.session.internal.mgmt.base.ThreadData.clearForReuse(ThreadData.java:505)
at com.pega.pegarules.session.internal.mgmt.PRThreadFactory.clearObject(PRThreadFactory.java:67)
at com.pega.pegarules.priv.factory.AbstractObjectFactory.releaseObject(AbstractObjectFactory.java:457)
at com.pega.pegarules.priv.factory.AbstractObjectFactory.releaseObject(AbstractObjectFactory.java:438)
at com.pega.pegarules.session.internal.mgmt.PRThreadFactory.release(PRThreadFactory.java:59)
at com.pega.pegarules.session.internal.mgmt.base.ThreadPassivation.cleanup(ThreadPassivation.java:390)
at com.pega.pegarules.session.internal.mgmt.PRThreadImpl.cleanup(PRThreadImpl.java:211)
at com.pega.pegarules.session.internal.mgmt.base.RequestorPassivation.cleanupThread(RequestorPassivation.java:790)
at com.pega.pegarules.session.internal.mgmt.base.RequestorPassivation.removeInactiveThread(RequestorPassivation.java:713)
at com.pega.pegarules.session.internal.mgmt.PRRequestorImpl.removeInactiveThread(PRRequestorImpl.java:786)
at com.pegarules.generated.activity.ra_action_removethead_3cf854ac07d0f8da83930ce82cc407bf.step2_circum0(ra_action_removethead_3cf854ac07d0f8da83930ce82cc407bf.java:250)
at com.pegarules.generated.activity.ra_action_removethead_3cf854ac07d0f8da83930ce82cc407bf.perform(ra_action_removethead_3cf854ac07d0f8da83930ce82cc407bf.java:86)


Steps to Reproduce



Not Applicable 


Root Cause



A defect in Pegasystems’ code or rules.

Resolution



Apply HFix-30779.
Suggest Edit

Published December 14, 2016 - Updated October 8, 2020

Did you find this content helpful? Yes No

Have a question? Get answers now.

Visit the Collaboration Center to ask questions, engage in discussions, share ideas, and help others.

We'd prefer it if you saw us at our best.

Pega Community has detected you are using a browser which may prevent you from experiencing the site as intended. To improve your experience, please update your browser.

Close Deprecation Notice
Contact us