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INC-143121 · Issue 610732

Timeout for loading predictors made configurable

Resolved in Pega Version 8.3.6

When using an extremely large number of predictors, the Report definition pzADMPredictorsFilter was suffering timeouts due to the time for loading predictors from the database exceeding the time threshold allowed. This has been resolved by marking the rule as editable to allow custom setting of the threshold according to need.

INC-148899 · Issue 615702

Adaptive models update correctly

Resolved in Pega Version 8.3.6

Some models had the recorded responses column updated, but the models (number of Positive, Negative and Processed Responses) were not updated. Investigation showed that deleting the modelRuleConfiguration through the stateManager/client did not delete modelFactories related to the configuration. If a new configuration came in with a different algorithm, the update issue occurred. This has been resolved by reseting the configuration according to its factory in that specific case.

INC-155822 · Issue 618267

Locking added to avoid null pointer error for auto-populate property

Resolved in Pega Version 8.3.6

After configuring the auto populate property "OrgProduct" which referred to a data page, the system experiencing heavy load led to the property not getting properly initialized. This resulted in a WrongModeException and NullPointerException. To resolve this, the system has been updated to lock the requestor when Queue Processors execute their activity. This will prevent race conditions and concurrent modifications if other threads are accessing the same requestor.

INC-157629 · Issue 626633

Duplicate key exception resolved for adaptive model

Resolved in Pega Version 8.3.6

During the model snapshot update, a DuplicateKeyException was generated while trying to insert a record in to the predictor table. This did not affect the model's learning, but did appear ion the model monitoring report. This was traced to a local scenario of having the same outcome values defined on the model with different cases (Accept and accept). All predictors used in an Adaptive model are inserted into the model monitoring tables as a part of the monitoring job: because the monitoring tables are not case sensitive, this lead to a unique constraint exception since there were multiple IH predictors with the same name. To resolve this, validation has been added which will skip adding duplicates from new responses.

INC-160331 · Issue 628710

ML model continue tag error changed to debug logging

Resolved in Pega Version 8.3.6

Log entries were seen indicating "The continue tag is found without a start tag for window Line1 1234567890 in text". This appeared to be coming from the MLCommand java class. Investigation showed this occurred when the ML model believed a portion of the text (token) was a continuation of the entity because it has not found the starting part of the entity. This situation is not currently treated as a valid output, so an update has been made to change the logging level from error to debug for this case.

SR-69015 · Issue 619995

Unescaping characters implemented for expressions

Resolved in Pega Version 8.3.6, Resolved in Pega Version 8.4.4, Resolved in Pega Version 8.5.3, Resolved in Pega Version 8.6

An issue where expression builder statements were evaluated differently at runtime than at testing has been resolved. Pega Platform expressions with String literals(that is, sequences of characters enclosed in quotation marks) now unescape characters in strategy shapes such as Set Property or Filter.

SR-D16934 · Issue 493702

External Cassandra nodes listed in DDS cluster

Resolved in Pega Version 8.3.1

Nodes of an external Cassandra cluster were not listed in the DDS cluster except for the first one in the host list, and when the “only” listed Cassandra node was restarted, the status on the DDS cluster LP did not become “NORMAL” afterwards. In addition, even though other C* nodes were up and running, the external Cassandra cluster was reported as unreachable. This was an unintended side effect of work done on the landing page to reflect the real state of the nodes after some were killed and restarted, and has been corrected by refining the equals() and hashCode() methods for DDS member info in order to better differentiate the external Cassandra nodes.

SR-D22686 · Issue 493516

IH summaries working with external Cassandra

Resolved in Pega Version 8.3.1

Summaries were not working for external Cassandra. This was an issue with the IH summary component using the aggregated dataset as a reference, and this fix contains several components to improve this function. An issue where the IH aggregates dataset does not materialize when DDS is external Cassandra has been resolved by modifying the code that checks the DDS availability. A filter that was used to match “” did not work when pre-aggregation is off : this was due to the IH Browse operation being done outside of a DF context, and has been fixed. The IH Summary shape not working properly in a strategy if it referenced an aggregate dataset with pxInteractionID as part of the group-by properties was traced to an issue with it generating a pxInteractionID value when executing the strategy, and has been resolved by excluding pxInteractionID from the group keys in the IH Summary shape.

SR-D24880 · Issue 494171

CEP bucket size increased to 1 minute

Resolved in Pega Version 8.3.1

Frequent DSM Data Flow Errors were observed in production nodes with very high event rates. This was traced to the default bucket size for CEP being 1 second for a 31 day window, which was not sufficient to handle high volume use which may create an event strategy window large enough to hit the Cassandra column size limit. In order to resolve this, the default bucket size has been increased from 1 second to 1 minute.

SR-D25184 · Issue 494689

Support added for referencing Page Group property inside of strategy

Resolved in Pega Version 8.3.1

Referencing a page property under Page Group property inside a strategy resulted in a runtime error of ClassCasting: "java.lang.ClassCastException: java.util.ArrayList cannot be cast to com.pega.decision.strategy.ssa.runtime.ClipboardPage". The issue was traced to the SSA optimized code for the GetPage SSA assuming that the GetPage SSA would only have another page as a parent. In order to handle the above scenario where GetPage would have a GetPageCollection as a parent and return a List of ClipboardPages, a GetPage function has been applied over each entry in the results of the GetPageCollection SSA using a MapAction SSA. Some optimizations will be applied in cases where the GetPageCollection has only one entry, which will replace the MapAction with a simple GetPage action.

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