Question
Has anyone encountered an issue with SLA agent throwing ConcurrentModificationException though the workitem is not being accessed by anyone else??
Has anyone encountered an issue with SLA agent throwing ConcurrentModificationException though the workitem is not being accessed by anyone else??
System Info : CPM 7.1.3 on Pega 7.1.8
2016-04-19 14:25:14,414 [ PegaRULES-Batch-4] [ STANDARD] [ ] [ CCI:01.01.01] ( internal.mgmt.Executable) ERROR - Exception
java.util.ConcurrentModificationException
at java.util.HashMap$HashIterator.nextEntry(HashMap.java:922)
at java.util.HashMap$ValueIterator.next(HashMap.java:950)
at com.pega.pegarules.data.internal.clipboard.ClipboardPageImpl.clearMessages(ClipboardPageImpl.java:3869)
at com.pegarules.generated.activity.ra_action_closeinteration_af6cf4aa5e5116d8f7b1be514bbe101d.step2_circum0(ra_action_closeinteration_af6cf4aa5e5116d8f7b1be514bbe101d.java:285)
at com.pegarules.generated.activity.ra_action_closeinteration_af6cf4aa5e5116d8f7b1be514bbe101d.perform(ra_action_closeinteration_af6cf4aa5e5116d8f7b1be514bbe101d.java:86)
at com.pega.pegarules.session.internal.mgmt.Executable.doActivity(Executable.java:3500)
at com.pegarules.generated.callActivity_071017_xvj4o_pyNDBZ4Gy293rekg.callActivity07_10_17(callActivity_071017_xvj4o_pyNDBZ4Gy293rekg.java:122)
at com.pegarules.generated.callActivity_071017_xvj4o_pyNDBZ4Gy293rekg.invoke(callActivity_071017_xvj4o_pyNDBZ4Gy293rekg.java:82)
at com.pega.pegarules.generation.internal.library.LibraryRuntime.resolveAndinvokeFunctionViaReflection(LibraryRuntime.java:133)
at com.pega.pegarules.generation.internal.library.LibraryRuntime.invokeLibraryRuntime(LibraryRuntime.java:110)
at com.pega.pegarules.session.internal.mgmt.Executable.invokeLibraryRuntime(Executable.java:8954)
at com.pega.pegarules.priv.generator.LibrarySupport.resolveAndInvokeFunctionViaReflection(LibrarySupport.java:181)
at com.pegarules.generated.pega_rules_utilities.callActivity(pega_rules_utilities.java:1619)
at com.pegarules.generated.activity.ra_action_executesla_385b3e0f8d36abe26bfa86b4b22f803a.step19_circum0(ra_action_executesla_385b3e0f8d36abe26bfa86b4b22f803a.java:2107)
at com.pegarules.generated.activity.ra_action_executesla_385b3e0f8d36abe26bfa86b4b22f803a.perform(ra_action_executesla_385b3e0f8d36abe26bfa86b4b22f803a.java:434)
at com.pega.pegarules.session.internal.mgmt.Executable.doActivity(Executable.java:3500)
at com.pega.pegarules.session.internal.mgmt.Executable.invokeActivity(Executable.java:10521)
at com.pegarules.generated.activity.ra_action_processevent_b20b900d4f9f22f92e8fd368c9027da2.step7_circum0(ra_action_processevent_b20b900d4f9f22f92e8fd368c9027da2.java:735)
at com.pegarules.generated.activity.ra_action_processevent_b20b900d4f9f22f92e8fd368c9027da2.perform(ra_action_processevent_b20b900d4f9f22f92e8fd368c9027da2.java:198)
at com.pega.pegarules.session.internal.mgmt.Executable.doActivity(Executable.java:3500)
at com.pega.pegarules.session.internal.async.agent.QueueProcessor.runActivity(QueueProcessor.java:721)
at com.pega.pegarules.session.internal.async.agent.QueueProcessor.execute(QueueProcessor.java:602)
at com.pega.pegarules.session.internal.async.BatchRequestorTask.run(BatchRequestorTask.java:945)
at com.pega.pegarules.session.internal.PRSessionProviderImpl.performTargetActionWithLock(PRSessionProviderImpl.java:1259)
at com.pega.pegarules.session.internal.PRSessionProviderImpl.doWithRequestorLocked(PRSessionProviderImpl.java:1008)
at com.pega.pegarules.session.internal.PRSessionProviderImpl.doWithRequestorLocked(PRSessionProviderImpl.java:901)
at com.pega.pegarules.session.internal.async.BatchRequestorTask.run(BatchRequestorTask.java:670)
at com.pega.jsr166backport.java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:991)
at com.pega.jsr166backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:532)
at java.lang.Thread.run(Thread.java:745)
Thanks Murali! Nope, that is not the scenario. This is all I have in the activity.
This seems to be a product issue as error is coming from ClipboardPageImpl class -
at java.util.HashMap$HashIterator.nextEntry(HashMap.java:922)
at java.util.HashMap$ValueIterator.next(HashMap.java:950)
at com.pega.pegarules.data.internal.clipboard.ClipboardPageImpl.clearMessages(ClipboardPageImpl.java:3869)
If someone from Pega can have a look at this class they might get an idea.
Murali...
Yep! Pega has suggested an Hotfix. will have to verify after importing it.
Great! Thanks for the update Venu.
Murali...
This exception is thrown even in scenarios when list is modified outside the iterator within the same thread/user context. Check the closeinteraction activity if it trying to modify (like removing or adding an element to list) after getting the iterator but outside the iterator loop.
Murali...