SR-D75519 · Issue 536717
Corrected calculating propensities
Resolved in Pega Version 8.3.2
Several PMML models designed to compare the outcomes to a control dataset experienced an issue where the probability scores in Pega did not match the original control dataset. The PMML model was also tested using KNIME; those results matched Pega but not the original control dataset. Investigation showed that the JPMML evaluator contained outdated code, and the incorrect calculations have been resolved.
INC-166845 · Issue 640299
Hazelcast remote execution not called from synchronized context
Resolved in Pega Version 8.7
After navigating to the Admin Studio portal to view the nodes, the portal was temporarily freezing. Investigation of the thread dump revealed this was caused by a DDS pulse sending a remote execution call to all nodes to update logger settings even though the site was not using DDS. This has been resolved by updating the system to avoid calling Hazelcast remote execution from a synchronized context.
INC-192025 · Issue 680706
Scenario Planner performance improvements
Resolved in Pega Version 8.7
Scenario planner runs were causing out of memory errors on the dataflow nodes. To resolve this, updates have been made to improve performance. Only relevant information will be kept for decision funnel simulations out of SR pages, the memory footprint of data structures used to aggregate and rollup counts has been reduced, and temporary objects will be released as soon as they are not needed anymore.
SR-D53223 · Issue 516916
Predictor handling updated for Versioning Adaptive Model
Resolved in Pega Version 8.3.2
When attempting to update an adaptive model in a branch after it had been versioned, errors were observed on Predictor Type data that had not changed from the previous version. This was traced to an issue in the Adaptive Model rule UI in both Prediction and Dev Studio where if a non-default predictor type is selected, it would show in the UI but not be saved to the database. No error was shown. This silently led to the unexpected and incorrect data being stored with the result that once data had accrued, the rule could not be saved/saved-as due to validation believing the predictor type of a predictor with data was changing. To resolve this, rules have been updated so that the system will no longer override the predictor type of a predictor being edited when it is solely the predictor type that is changing.
INC-175207 · Issue 655554
Added handling for DSM Services stuck in leaving status after database outage
Resolved in Pega Version 8.7
During a database outage, the heartbeat would fail and DSM services would eventually try to enter safe mode and stop. As the first step they would try to change the state to LEAVING, but because the database was down saving the LEAVING state failed and the exception was not handled correctly. This resulted in the rest of the stop operation logic not being executed and the service being stuck in LEAVING. To resolve this, an update has been made to ensure the service goes to LEAVING_FAILED if anything fails during the stop operation including when setting state to LEAVING_FAILED. The state LEAVING_FAILED will get flushed to the database eventually when it comes back up. This will allow the aggregation service to start from the LEAVING_FAILED state and recover by itself after a database outage.
INC-184352 · Issue 671897
Predictive model snapshot generation updated for Java 11
Resolved in Pega Version 8.7
While the Simulation data export case type was executed as expected, the predictive stages showed zero records processed. This was traced to instances running on Java 11 which caused an issue with the snapshot process. This did not affect learning, but visualization and reporting were not working in Prediction studio. To resolve this, an update has been made to the snapshotID for Java 11 compatibility which will generate a random UUID instead of using a seed.
INC-178214 · Issue 664890
D_ProjectList updated to resolve defined databases error
Resolved in Pega Version 8.7
After update, an API error for D_ProjectList indicating "No databases defined" was seen when trying to load decision and templates for the first time. The error did not reoccur after the initial save. This was has been resolved by updating the handling for loading the properties file during class loading. The error has also been changed to an exception.
SR-D53225 · Issue 516316
Rule creation logic updated to include creation branch
Resolved in Pega Version 8.3.2
When trying to create a new adaptive model rule in Prediction Studio, the “Create” button was not activating. The adaptive model rule was being saved in a branch ruleset, and investigation indicated that the deactivated button could be traced to the lack of an open ruleset version available even though the intention was to create it on a branch. This has been resolved by modifying the rule creation logic to incorporate the branch for creation.
INC-182137 · Issue 662488
Multistage Prediction Logic improved
Resolved in Pega Version 8.7
When Predictions with Response wait time configured were executed as part of make decision, each decision that came out of the strategy caused a pxDR call to fetch the relevant model execution results and process them to stage the default outcome results for models. This has been improved by modifying the system to process the existing records rather than reading data again from pxDR.
INC-188124 · Issue 672587
Multistage Prediction Logic improved
Resolved in Pega Version 8.7
When Predictions with Response wait time configured were executed as part of make decision, each decision that came out of the strategy caused a pxDR call to fetch the relevant model execution results and process them to stage the default outcome results for models. This has been improved by modifying the system to process the existing records rather than reading data again from pxDR.