INC-172546 · Issue 652877
Resolved classcast exception with assembled HTML controls
Resolved in Pega Version 8.5.4
A classcast exception was being generated on login. Investigation showed the Static Assembler was unexpectedly using a different Assembler to assemble the Html control rule. Standard behavior is that StreamBuilderAssembler assembles controls of type StreamBuilder and ControlAssemblerForVTable assembles controls of type ControlBuilder. In this case, static assembly for HTML controls using VTable was performed using StreamBuilderAssembler, causing a classcast exception when using VTable because the instance of the generated.html class was incorrectly inheriting from StreamBuilder (the parent class of ControlBuilder) instead of ControlBuilder which is the specified interface in the generated.html Java code. This has been resolved by updating the system to skip rules of type 'Rule-HTML-Property'(control) during Static Assembly.
INC-172675 · Issue 649453
Configuration added for extending queue processor timeout
Resolved in Pega Version 8.5.4
Alerts for queue processor (QP) items which took more than 15 minutes to run could result in the system marking the node as 'unhealthy'. In environments with Pega Health Check enabled, this would shut down the node gracefully. It was not possible to change this default as it was hardcoded. In order to support systems that may have custom processes that run beyond 15 minutes, a a new setting has been exposed that allows configuration of the interval after which a node with long-running queue processor is marked as unhealthy and is restarted. By default this remains 900000 milliseconds / 900 seconds / 15 minutes, but it may be adjusted up to 24 hours to avoid premature node shutdown. The stale thread detection mechanism will take that setting into account and use the provided value or default to 15 minutes if the value was not provided. In addition, the threshold's units in the UI have been changed from ms to seconds.
INC-172692 · Issue 650613
InsID will be derived from handle if null for upgrade
Resolved in Pega Version 8.5.4
Upgrade from Pega 7.2.x to Pega 8.4.x failed with a null pointer exception in the “Upgrade Context” target. This was traced to a rule where the pxInsID was null. To resolve this, an update has been made to derive the InsID from handle when needed.
INC-173092 · Issue 648737
Checks for Apache Tomcat 6 with MSSQL removed
Resolved in Pega Version 8.5.4
After implementing a specific local Tomcat configuration that removed the Tomcat version number from displaying on Tomcat standard error screens, the error "Tomcat 6 not supported or unable to detect version for custom Tomcat: Apache Tomcat. Contact Pega Customer Support!" appeared and Tomcat failed to start. Because Tomcat 6 was not supported for use with Microsoft SQL Server Systems, Pega used the ServletContext.getServerInfo() method to determine the Tomcat version; if the system used Tomcat 6 or an undetermined version in combination with MSSQL then the system would purposefully not start. As Tomcat 6 is no longer supported in Pega 8.5.2 and above, this check is unnecessary in those versions and the Tomcat version 6 checks in ClassMapImpl have been removed to allow serverAllowsMerge to return as true.
INC-174296 · Issue 650754
Delayed JS/DF initialization failures will trigger alert
Resolved in Pega Version 8.5.4
In order to ensure better cluster monitoring, a PEGA0102 alert has been added for job registration failure that will be triggered if there are startup issues. The logging will include the JOB_NAME for improved troubleshooting.
INC-175205 · Issue 652286
Agent restart made more resilient
Resolved in Pega Version 8.5.4
During a timeout outage, agents intermittently encountered a NoClassDefFound error and were disabled. After the database connection was restored, the agents were not automatically restarting. This has been resolved by making the code more resilient to errors; agent will be restarted when a temporary issue is detected, and the restart will be immune to most exceptions.
INC-175672 · Issue 652942
ServicePackage threads properly released
Resolved in Pega Version 8.5.4
After completing a system stress test, the requestor pool threads for the ServicePackage were not released. Investigation showed that the threads were waiting for Data Pages to be loaded in the background even though there was no background job corresponding to those data pages in the Async Services pool. This has been resolved by making an update to avoid removing the object handlers when the load-datapage finds that an entry exists with a NOT_STARTED state.
INC-162881 · Issue 636993
Decision Table check-in warnings supported for large tables
Resolved in Pega Version 8.5.4
After adding an empty row in the middle of Decision Table rows and checking in, the Decision table rule's CheckIn form shows a functionality warning about a conflict in decision table ("This rule contains 1 logic conflict(s). Click the 'Show Conflicts' button for more details."). However, this behavior did not occur as expected if the decision table had more than 500 cells in it, and has now been resolved.
INC-163970 · Issue 636137
Expression Builder updated for special character handling
Resolved in Pega Version 8.5.4
If a modulo operator (%) was used in expression builder, the expression showed the correct value when it was submitted (closed) but on reopen the expression was changed and not calculated correctly. If the expression was not reopened then it calculated the value properly. This issue was traced to a server call to pzEvaluatePegaExpression which treated certain values as containing special characters, and has been resolved by updating the handling for this scenario.
INC-164002 · Issue 639913
Decision table null input handling updated for backward compatibility
Resolved in Pega Version 8.5.4
After upgrade, any null values as inputs in the decision tables were skipped if "Allow Missing properties" was not checked. This behavior was different from previous versions. In order to improve backward compatibility, the new function pxEvaluateDecisionTable has been added which has an additional parameter to set AllowMissingProperties, and the older function logic has been modified to take the parameter value from the parameter page.