java.util.ConcurrentModificationException: null at com.isomorphic.messaging.LocalMessageDispatcher.deliver

[pankajkumarroy]

I am using smartgwt 14.1p version, i upgraded 6 months back.
After upgrading I am getting frequent ConcurrentModificationException at com.isomorphic.messaging.LocalMessageDispatcher.deliver(LocalMessageDispatcher.java:197).
Please let me know is there any issue with the version or any fix available for this issue.
Please find the below exception.
java.util.ConcurrentModificationException: null
at java.util.HashMap$HashIterator.nextNode(HashMap.java:1605) ~[?:?]
at java.util.HashMap$KeyIterator.next(HashMap.java:1628) ~[?:?]
at com.isomorphic.messaging.LocalMessageDispatcher.deliver(LocalMessageDispatcher.java:197) ~[isomorphic_realtime_messaging.jar:?]
at com.isomorphic.messaging.ISCMessageDispatcher.send(ISCMessageDispatcher.java:179) ~[isomorphic_realtime_messaging.jar:?]
at ServerPushHelper.notifyUI(ServerPushHelper.java:16) [lm-common-utils.jar:?]
at ServerPushUtil.sendECConnectionUpdateNotification(ServerPushUtil.java:82) [lm-servicemanager.jar:?]
at ServerPushUtil.fetchPortDetailsToSendUI(ServerPushUtil.java:73) [lm-servicemanager.jar:?]
at PostActivationStatusCheck.updateService(PostActivationStatusCheck.java:268) [lm-servicemanager.jar:?]
at PostActivationStatusCheck.notifyService(PostActivationStatusCheck.java:105) [lm-servicemanage

[Isomorphic]

This is a real bug - thanks for the report.

This is now fixed for tomorrow's builds.

Note this only affects the LocalMessageDispatcher, which, as doc'd, is intended for testing and/or the rare case of having exactly one server. There are no issues for real production configurations.

[pankajkumarroy]

Thanks for the update. It's great to hear that the bug is getting fixed in tomorrow's builds.

[pankajkumarroy]

Hi Thanks for the latest release, is it fine to replace the jar directly into the production?

[Isomorphic]

It's not a release, just a patch. Yes, patches are intended for production - see smartclient.com/builds.

No, you cannot just copy a single jar, ever. You must do an installation, per docs.