INC-141579 · Issue 591852
Enhancement added for node heartbeat recovery process
Resolved in Pega Version 8.3.5
Nodes were not showing up in the admin portal even though they were up and running and could be seen in the pr_sys_statusnodes table. The exception "An exception was encountered while invoking the cluster membership listener callback" was seen. All nodes became visible again after multiple restarts. The root cause was traced back to a temporary database connectivity problem. The database itself was fine according to database monitoring reports, but a network problem, a slow database query, or another issue prevented Pega from establishing a connection for more than a minute. An enhancement has been made to resolve this: if a node becomes unhealthy due to the service registry missing due to a failed heartbeat, the heartbeat will try to recover after 60 seconds and keep trying every 30 seconds until it succeeds.
INC-142674 · Issue 594496
Enhancement added for node heartbeat recovery process
Resolved in Pega Version 8.3.5
Nodes were not showing up in the admin portal even though they were up and running and could be seen in the pr_sys_statusnodes table. The exception "An exception was encountered while invoking the cluster membership listener callback" was seen. All nodes became visible again after multiple restarts. The root cause was traced back to a temporary database connectivity problem. The database itself was fine according to database monitoring reports, but a network problem, a slow database query, or another issue prevented Pega from establishing a connection for more than a minute. An enhancement has been made to resolve this: if a node becomes unhealthy due to the service registry missing due to a failed heartbeat, the heartbeat will try to recover after 60 seconds and keep trying every 30 seconds until it succeeds.
INC-137255 · Issue 584910
Resolved Cassandra query read/write latency
Resolved in Pega Version 8.3.5
Read/write latency was seen when certain Cassandra queries were triggered by the system. This was traced to an unusual case where a flush was not done for an exceptionally long time period, and has been resolved.
SR-D39956 · Issue 511637
Corrected method IF use with shortcut function
Resolved in Pega Version 8.2.5
After upgrade, method IF was not working as expected when used in an expression like "@if(.totalorders_120days>0,(.remakeorders_120days/.totalorders_120days)<0.3,false)". This was caused by a missed use case for the combination of an exception-generating function in combination with a shortcut function (i.e. ternary, and, or), and has been resolved.
SR-D41207 · Issue 512087
Fallover stategy added to chat routing to keep event processor running
Resolved in Pega Version 8.2.5
Chats were becoming stuck in the queue and end users were not able to connect with the customer service representative. An excessive number of queued items were observed in a Queue Processor named "EventProcessor". This was traced to the setting "Browse from the offset" having been removed because of a retention policy. This resulted in "Browse from the end of the stream" being used instead even though browse should start from the earliest known offset. To resolve this, Stream Producer will be cached based on topic, and Stream consumer will fall over to an earliest strategy in case the requested offset isn't found so the event queue will be handled in a timely manner.
SR-D42662 · Issue 516870
Support added for auto restart of system paused nodes
Resolved in Pega Version 8.2.5
After the system paused a run, nodes had to be manually restarted by hand. Investigation showed that a node had fallen from the Hazelcast cluster due to an instability and that there was no support for an auto-restart under this condition. This has been resolved by adding a pulse task to resume runs stuck in system pause.
SR-D43912 · Issue 509737
Fallover stategy added to chat routing to keep event processor running
Resolved in Pega Version 8.2.5
Chats were becoming stuck in the queue and end users were not able to connect with the customer service representative. An excessive number of queued items were observed in a Queue Processor named "EventProcessor". This was traced to the setting "Browse from the offset" having been removed because of a retention policy. This resulted in "Browse from the end of the stream" being used instead even though browse should start from the earliest known offset. To resolve this, Stream Producer will be cached based on topic, and Stream consumer will fall over to an earliest strategy in case the requested offset isn't found so the event queue will be handled in a timely manner.
SR-D47618 · Issue 512602
Statistic rounding error in ADMSnapshot Agent with Oracle corrected
Resolved in Pega Version 8.2.5
While running the ADMSnapshot Agent, the exception "internal.mgmt.Executable) ERROR com.pega.decision.adm.client.ADMException: Failed to complete ADM Data Mart snapshot" was seen. This was traced to an issue with the rounding of performance statistics when using Oracle, and has been resolved.
SR-D47713 · Issue 511970
Corrected issue with strategy framework testing
Resolved in Pega Version 8.2.5
Issues were seen in creating a dataflow to test the strategy framework shipped with the Pega Marketing product. It was not possible to use a data transform to test this strategy because it is in the shipped PegaMKTEngine ruleset. Investigation showed the value of appliedToClass was retrieved from "pyRunOnDataFlowClassName" instead of from the running strategy, and this has been resolved.
SR-D51353 · Issue 516913
Unit testing validation relaxed for external input strategy
Resolved in Pega Version 8.2.5
When trying to test a strategy, the testing transform had to exist in the same ruleset/version as the strategy or it would not resolve. Investigation showed that because the artifacts were in a different ruleset and version build on top of the application that the testing strategy belongs to, validation failed because it was using the platform based ruleset validation. This was a missed use case, and has been resolved by relaxing the validation for external input strategy so it does not take into account the ruleset and version of it. This same change has been applied for referenced data transforms.