INC-201365 · Issue 691786
Handling added for clearing node killed between assignment and processing
Resolved in Pega Version 8.6.3
An Offer flow was not resuming after it expired according to the wait shape. Investigation traced this to partitions which were assigned to a dead node in NEW state where they were not picked up by the dataflow. The problem was only encountered in the unusual situation when a dataflow node was killed in the brief period of time between the assignment and the processing, and has been resolved by adding an update which will clear unknown new assigned partitions for the batch run health task.
INC-201366 · Issue 691509
Performance improvements for stale thread warnings
Resolved in Pega Version 8.6.3
Stale thread warnings were causing performance issues during dataflow run execution. Stale thread/slow component warnings are added as part of the dataflow execution when a processing thread takes more than 5 minutes to process a single dataflow record. The stacktrace of the dataflow thread is added as part of the warning for debugging purposes, but in some scenarios the stacktrace can become very large. This has been resolved by removing the stacktraces from the warning, improving the query logic, and adding the run ID to the exception method to assist if there is an error.
INC-201610 · Issue 691879
Removed services check and added warnings for simulations
Resolved in Pega Version 8.6.3
Attempting to run an audience simulation resulted in the error "Running simulations is not possible, because the required services are not available. Contact your system administrator to enable the data flow and real-time data grid services". Investigation showed the @DsmServices.pxHasFunctionalNodes("DataFlow","Batch") function call contained in the 'when' rule pyUnavailableDecisionServices was returning false even if all the nodes were in the cluster and all the DSM Services were in NORMAL status. To resolve this, the services check has been disabled and the simulation run will show a warning or fail if a data flow run is queued for more than 30 secs or if there is an issue with querying the underlying metrics storage.
INC-202937 · Issue 695942
RealTimeProcessingDelay made configurable
Resolved in Pega Version 8.6.3
When using interaction history summaries in Engagement Policy strategies, the check whether a particular action was sent previously was not returning any results for the customers that did have an action "Sent". These records were present in the IH Fact table but the IH Summary tables were missing these records. This has been resolved by making the realTimeProcessingDelay configurable for reading from IH in a real-time flow configurable (done as part of IH pre-aggregation). This may be useful if there can be a difference in time between machines inserting into IH which causes pre-aggregation to miss processing records. The relevant DSS is "interactionHistory/realTimeProcessingDelay", and the default is 5 seconds. This must be set before starting pre-aggregation. This is the difference between the end position and the log time. RuleSet: Pega-DecisionEngine DSS Name: interactionHistory/realTimeProcessingDelay Value: <new delay in seconds>
INC-204682 · Issue 695705
HandleResponses updated for use with optimized campaign
Resolved in Pega Version 8.6.3
After updating from Pega 8.4, responses were not processed in the pxHandleResponses Data flow if the "pyCampaignOptimization" flag was set to true. This was traced to a missed use case for an optimized campaign, and has been resolved by modifying the condition in HandleResponses.
INC-205010 · Issue 698490
Updated expression string comparison
Resolved in Pega Version 8.6.3
An expression defined in the proposition filter and/or When rule was evaluated differently depending on whether it was run from within Decision Strategy or run isolated in Expression Builder or a When rule. This has been resolved by updating the string comparison.
INC-205378 · Issue 698443
Added handling for double quotes on Substrategy shapes
Resolved in Pega Version 8.6.3
After update, there were compilation issues on calling substrategies from strategies using datapage.pxResults as another page. This was traced to the handling for a parameterized data page with double quotes on Substrategy shapes, and has been resolved.
INC-179727 · Issue 704544
Modified batch requestor handling to ensure cleanup
Resolved in Pega Version 8.7.2
A large buildup of batch requestors was seen, and restarting the node did not clear it. Investigation showed that in the case of one class reading a DSS value, a Pega requestor was being created when it was unable to retrieve any Pega context, and this requestor was not cleaned up afterwards. To resolve this, an update has been made to the way the requestor and Pega context is being created along with ensuring it will be cleaned up properly after use.
INC-192826 · Issue 685795
PMML updated for nested 'if'
Resolved in Pega Version 8.7.2
Running a model on the openscoring API and the Pega PMML model gave different results. This has been resolved by updating the handling for nested 'if' in PMML.
INC-206109 · Issue 706237
Delayed Learning works correctly with Volume Constraints
Resolved in Pega Version 8.7.2
When running an outbound campaign using NBA Designers predictions and delayed learning in conjunction with volume constraints, the adaptive models ended up with incorrect feedback if the prediction had an Alternative label configured with a defined waiting window. This has been resolved with the addition of a new flag 'isVolumeConstraintEnabled' during dataflow creation which will check for volume constraint, and a filter in HandleResponses for that flag.