SR-A6903 · Issue 216455
Data Flow correctly handles table encountering null numeric columns
Resolved in Pega Version 7.2
When a data set was created on top of a exposed table which contains some null value in numeric columns, a Data flow executed using that data set used the value '0' instead of the expected null property. This was traced to the Data Flow batch run execution using the DSMClipboardPages, which weren't able to differentiate if a property was present or not and led to null being mapped to 0 in a numeric property. To correct this, the NativeSQLAPI will return null values as empty values when querying a DB and will not use them populate a DSM page or propagate them in the data flow.
SR-A6903 · Issue 216454
Data Flow correctly handles table encountering null numeric columns
Resolved in Pega Version 7.2
When a data set was created on top of a exposed table which contains some null value in numeric columns, a Data flow executed using that data set used the value '0' instead of the expected null property. This was traced to the Data Flow batch run execution using the DSMClipboardPages, which weren't able to differentiate if a property was present or not and led to null being mapped to 0 in a numeric property. To correct this, the NativeSQLAPI will return null values as empty values when querying a DB and will not use them populate a DSM page or propagate them in the data flow.
SR-A7401 · Issue 216480
Performance tune-ups in DSM
Resolved in Pega Version 7.2
Strategy Profiler was showing misleading timing information for Switch, Champion Challenger, Exclusion, and Data Join. This has been fixed. In addition, Strategy Set has been optimized to let it evaluate the customer-specific expressions once per component execution (instead of per SR page) , and it will not clone SR pages if it's unnecessary. The Prioritization shape has also been improved to only prioritize the Top N if that?s configured.
SR-A7401 · Issue 219542
Performance tune-ups in DSM
Resolved in Pega Version 7.2
Strategy Profiler was showing misleading timing information for Switch, Champion Challenger, Exclusion, and Data Join. This has been fixed. In addition, Strategy Set has been optimized to let it evaluate the customer-specific expressions once per component execution (instead of per SR page) , and it will not clone SR pages if it's unnecessary. The Prioritization shape has also been improved to only prioritize the Top N if that?s configured.
SR-A12733 · Issue 227212
Fixed NPE for Tracer
Resolved in Pega Version 7.2
It was not possible to execute strategies if the tracer was turned on. This was failing because the tracer was trying to collect the primary page in XML format from a clipboard page that was missing the implementation to generate the XML. This has been corrected.
SR-A13237 · Issue 227844
Fixed NPE for Tracer
Resolved in Pega Version 7.2
It was not possible to execute strategies if the tracer was turned on. This was failing because the tracer was trying to collect the primary page in XML format from a clipboard page that was missing the implementation to generate the XML. This has been corrected.
SR-A12341 · Issue 226423
Corrected implementation for DataFlow key non-match
Resolved in Pega Version 7.2
If a DataFlow Dataset configured against a Report Definition had a property key name that was not identical to the column name in the database table, the Dataflow failed to execute with error " Incorrect implementation for Report Definition as a data flow source. Property-to-database table column mapping was not applied correctly". The implementation has been fixed to resolve this issue.
SR-D68707 · Issue 529871
Update Handler will not run during migration
Resolved in Pega Version 8.4.1
Rolling restart of DataFlow, ADM ,VBD, and Util Tiers failed with a PENDING_JOINING error after an in-place upgrade. This was traced to the logic for the update timing: when nodes start after an upgrade from 7.x to 8.x they will migrate data flow runs. Migration happens on only one node, and while it's in progress the other nodes will wait until migration finishes before they come up. At this point the state of the data flow services will be 'PENDING JOINING'. The issue is that while migrating runs, the Data Flow Update Handler was triggered to validate whether there were nodes available on the service the run belongs to. This call can cause the corresponding data flow service to be initialized, but the call will be blocked since all services wait for the migration to end. This resulted in a deadlock which prevented all nodes from coming up successfully. To resolve this, the process has been updated to skip the update handler during migration to avoid triggering the initialization of client services that are waiting on the migration lock.
SR-D74117 · Issue 539463
DDS service will not run Hazelcast check if external Cassandra is configured
Resolved in Pega Version 8.4.1
Services were not responding, and thread dumps seen in the logs indicated that a large number of threads were waiting for one to come back from getting the cluster state for a DSM process. Investigation showed that the threads were waiting for a Hazelcast response about the cluster state. However, since a Hazelcast call is not needed when Pega is configured with external Cassandra, the DDS Service code has been changed to not to check for candidate nodes if configured with external Cassandra cluster.
SR-D75519 · Issue 536719
Corrected calculating propensities
Resolved in Pega Version 8.4.1
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.