INC-201364 · Issue 690806
Prediction outcome response timing updated
Resolved in Pega Version 8.7
Predictions using a response timeout were not emitting a negative response ('NoResponse') when the specified waiting time expired. This was traced to the the outcome and response timeout values being overridden while triggering responses for multi stage predictions along with chained predictions. This has been resolved by modifying the flow to emit each outcome as it is received and by adding the dataflow trigger in the function so that it does not override the values in case of chained predictions.
SR-D60268 · Issue 521467
Performance and thread-handling improvements for SSA
Resolved in Pega Version 8.4
The SecureRandom class was used internally by SSAExecutionContext indirectly via UUID generation. Because this exhibited performance issues on some Linux environments, UUID has been replaced with static AtomicLong. In addition, a memory leak was observed when the strategy (SSA) execution resulted in an exception, and the strategy template has been modified to gracefully shutdown the VM under all circumstances. Thread-safety measures have also been tuned to be more fine-grained to reduce the potential thread contention that was seen while borrowing the SSAInterpreter object from SSAInterpreterPool.
INC-127667 · Issue 581851
Documentation updated to clarify displaying property values for Declare Expressions
Resolved in Pega Version 8.7
The documentation regarding Declare Expressions rules has been updated to clarify that declare expressions do not support displaying values of target properties in the user interface if the target property is an embedded property and if the calculation engages forward chaining. Declare expressions always display property values if the calculation uses backward chaining. During forward chaining, the system might render the UI before populating the clipboard, and the properties are not visible in the UI. To show updated values, define refresh conditions in the UI to get new values from the server when the values change.
SR-D41616 · Issue 509809
Corrected Cassandra startup error related to client authentication
Resolved in Pega Version 8.4
During provisioning, Cassandra nodes in PegaDDSTier failed to join the cluster and the error "Exception (org.apache.cassandra.exceptions.ConfigurationException) encountered during startup: Invalid yaml. Those properties [truststore_password, truststore] are not valid" was generated. Investigation showed that the recent addition of support for client authentication using the settings "dnode/cassandra_client_encryption/truststore" and "dnode/cassandra_client_encryption/truststore_password" resulted in nulls being set cassandra.yaml if the new parameters were not given values. To resolve this, truststore and truststore_password will not be added to cassandra.yaml when they are not set in prconfig or system settings.
SR-D60121 · Issue 525492
All interactions visible in "Latest Responses" for ADM
Resolved in Pega Version 8.4
Interactions were not visible in the "Latest Responses" section of the Model Management landing page for Adaptive models if the requests were stored on multi-node systems. This was due to the system fetching the Last Responses using a list of server nodes built using a version of deployment.getClusterState(tools) which gave only the ADM nodes list instead of all the ADM nodes both client and server. To resolve this, the system has been updated to use ServiceRegistry to get all of the data flow nodes and get the last responses from each of them.
INC-186437 · Issue 685015
Updated entity attachment extraction tokenizers
Resolved in Pega Version 8.7
After creating an entity extraction model, it was seen that one of the entities worked when there was a space after the semicolon but the detection was not working if there was no space. This has been resolved by updating the Tokenizers with extra examples to address tokenization when ":" is present between two words without any spaces.
SR-D51017 · Issue 517182
Expanded date format handling
Resolved in Pega Version 8.4
The xx in the xx:yy time format was incorrectly detected as a year. To correct this, support has been added for the use case of the date followed by time.
INC-168271 · Issue 640347
ADM performance improvements and duplicate inputs corrected for delayed learning records
Resolved in Pega Version 8.7
Additional work has been done to improve the performance for Adaptive Models used in multi-level decisioning, and an issue with duplicate pxCommonInputs has been resolved.
INC-193986 · Issue 680032
Parameter logic updated for metrics activity counter
Resolved in Pega Version 8.7
An error was causing the PushCDHMetrics agent to fail. This was traced to an undefined parameter in the activity which was used as a counter, and has been resolved by replacing it with a local variable of type integer.
SR-D26976 · Issue 507218
Filter added to ensure correct context for proposition strategy rules
Resolved in Pega Version 8.4
Given two applications (ex App1 and App2) hosted on the same domain where App2 was built on App1, trying to create a strategy rule in App1 and do a test run strategy using the propositional data component which internally uses App2 propositions generated the error: Failed to find a 'RULE-DECISION-DECISIONPARAMETERS' with the name 'GROUP_2'. There were 1 rules with this name in the rulebase, but none matched this request." Investigation showed the strategy was using the PropositionNoCacheUtils and PropositionTools java classes to load the propositions during run time. In these classes, the group classes were browsed from the db irrespective of the application context, causing the strategy run to fail as it was not able to access the decision data rules in other applications which shared the same SR class as the current application. To resolve this, a filter has been added to the PropositionNoCacheUtils and PropositionTools java classes to filter out the groups that are not in the current application context.