INC-177031 · Issue 664858
Adaptive model retry mechanism enabled
Resolved in Pega Version 8.7
Adaptive models were missing from the Model Management page as well as in the Prediction studio while similar models for the same proposition, only differing by the Channel name, were visible. This was traced to data not being synchronized between the database and Cassandra. The pegadata.pr_data_adm_factory database table did not contain the record of the missing channel, but Cassandra did. Since the current Cassandra adm_scoringmodel contained model information, the system still believed the model was present. In order to ensure Cassandra and the database table are in sync, an update has been made to enable the retry mechanism "SyncFactoryKeysTask" to create the ADM model in factory table by periodically looking for scoring models without factories or an entry in adm_meta.
INC-177877 · Issue 661176
Write lock check added to avoid thread contention
Resolved in Pega Version 8.7
After updating the Pega platform and NBA Designer, a significant drop in performance for multilevel strategies was observed. Investigation showed that invoking a sub strategy containing external input intermittently caused a thread contention issue related to write lock. This was traced to overzealous write locking of a component where only a read lock for the thread was required, and has been resolved by adding a verification check to determine whether a write lock is necessary for a given operation before acquiring it.
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.
INC-178938 · Issue 661495
Exception handling added for ClipboardPropertyCollection
Resolved in Pega Version 8.7
After upgrading from Pega v7.3 to 8.5, validating the existing strategy logic generated the error "ClipboardPropertyCollection is not a supported ILType". This was traced to the special Pega expression type PropertyCollection not being supported by IL, and has been resolved by adding logic that will throw a more appropriate exception (instead of the generic PRRuntimeException) so the event can be caught by the existing fallback logic.
INC-181401 · Issue 665936
Added handling for MS SQL datestamp format
Resolved in Pega Version 8.7
When using an Microsoft SQL Server, the browse operation was failing with an SQL error for the pyIHSummary dataset. Investigation showed there were some datasets that generated SQL statements with a date timestamp format that SQL was not able to handle implicitly, affecting browsing but not functionality. This has been resolved.
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-183211 · Issue 667012
Compare-To-Empty-String support added to Analyzer
Resolved in Pega Version 8.7
An enhancement has been added to support a NotEquals decision function in the Analyzer.
INC-183431 · Issue 665162
Strategy execution queries tuned
Resolved in Pega Version 8.7
During NBA strategy execution, interaction history summaries were queried multiple times for a single strategy execution. To improve this function, the isChanged query will now be executed once after system startup if there are no changes instead of being executed every time the Aggregates DataSet BBK is executed. If the same Aggregates query is made multiple times as part of a Strategy in a REST request (i.e. likely multiple ADM models in a MakeDecision call), only one Aggregates BBK call will be made.
INC-183855 · Issue 667692
Feedback data visible after update
Resolved in Pega Version 8.7
In order to improve backwards compatibility, handling has been added for blank values of ruleset and classname in feedback data from NLP models.
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.