INC-213176 · Issue 709974
Data flow stability improvements
Resolved in Pega Version 8.6.4
All nodes were showing as active and running in the cluster, including background, stream, web nodes, but the queue processor would not start. Log entries indicated "IllegalStateException: Invalid run transition found [PENDING_NODES->COMPLETED] on run [DF_OutboundPreProcessing_SMS] by [EventDescription{originator=CheckNodeAvailabilityTask, reason=Restoring previous state." Due to this, all dataflows were moved to queued state. As soon as the corrupted dataflow was deleted the other dataflows were resumed. To resolve this, data flow stability improvements have been added along with better handling of runs in Queued state.
INC-213189 · Issue 707344
Addressed performance issues for classless DSMClipboardPage
Resolved in Pega Version 8.6.4
The DSMClipboardPage implementation handles Page Group access as a classless page (i.e. pxObjClass = ""), creating potential performance issues in implementations where the page group is used with a very large number of distinct AccountIDs in a short period. This has been resolved by updating the system to not cache keys for page group classless page.
INC-213262 · Issue 709457
Refresh added to limit commit log partition size
Resolved in Pega Version 8.6.4
Issues were seen on DDS nodes, including slowness and randomly dropping out and being replaced by new nodes. WARN messages in Cassandra logs reported issues relating to a large partition size of adm_response_commit_log_date_tiered table. Investigation showed the large partition size (over 10GB) was causing frequent C* query timeouts due to scanning a large number of tombstones, resulting in node terminations. This has been resolved with an update which will limit the commit log partition size by refreshing the NID every set interval.
INC-213945 · Issue 709365
Additional logging and executor work for Adaptive Decision Manager
Resolved in Pega Version 8.6.4
The Adaptive Decision Manager Pulse operation stopped running on some of the ADM nodes, causing an impact on the model update. To address this, some additional protections have been added for pulse operations running in a scheduled executor, and ERROR logging has been enabled.
INC-216894 · Issue 712241
Refresh added to limit commit log partition size
Resolved in Pega Version 8.6.4
Issues were seen on DDS nodes, including slowness and randomly dropping out and being replaced by new nodes. WARN messages in Cassandra logs reported issues relating to a large partition size of adm_response_commit_log_date_tiered table. Investigation showed the large partition size (over 10GB) was causing frequent C* query timeouts due to scanning a large number of tombstones, resulting in node terminations. This has been resolved with an update which will limit the commit log partition size by refreshing the NID every set interval.
INC-179727 · Issue 704544
Modified batch requestor handling to ensure cleanup
Resolved in Pega Version 8.7.2
A large buildup of batch requestors was seen, and restarting the node did not clear it. Investigation showed that in the case of one class reading a DSS value, a Pega requestor was being created when it was unable to retrieve any Pega context, and this requestor was not cleaned up afterwards. To resolve this, an update has been made to the way the requestor and Pega context is being created along with ensuring it will be cleaned up properly after use.
INC-192826 · Issue 685795
PMML updated for nested 'if'
Resolved in Pega Version 8.7.2
Running a model on the openscoring API and the Pega PMML model gave different results. This has been resolved by updating the handling for nested 'if' in PMML.
INC-206109 · Issue 706237
Delayed Learning works correctly with Volume Constraints
Resolved in Pega Version 8.7.2
When running an outbound campaign using NBA Designers predictions and delayed learning in conjunction with volume constraints, the adaptive models ended up with incorrect feedback if the prediction had an Alternative label configured with a defined waiting window. This has been resolved with the addition of a new flag 'isVolumeConstraintEnabled' during dataflow creation which will check for volume constraint, and a filter in HandleResponses for that flag.
INC-207357 · Issue 703349
Decision Management book updated for additional NLP troubleshooting
Resolved in Pega Version 8.7.2
Troubleshooting articles have been added to the Decision Management book which address the most common issues encountered when working with the NLP capability of Pega Platform, including topic and entity detection and email parser. These tips can assist with issues such as a node running out of memory due to having a large number of custom Ruta scripts that use REGEX pattern matching.
INC-208709 · Issue 710809
Added handling for new requestor in previously authenticated Voice AI group
Resolved in Pega Version 8.7.2
When attempting to pilot the new Voice AI feature set provided recently in the Customer Service framework, the error "You lack access required to execute RULE-OBJ-ACTIVITY WORK-CHANNEL-INTERACTION-VOICEAI TRANSCRIPTDISPATCHER" was logged. The same was seen for the ConnectToAudioProcessor activity. Investigation showed this could happen when a new requestor that's not authenticated yet gets created with currentAccessGroup already equal to the desired access group, causing the authentication step to be skipped. This has been resolved with an update to address the dataflow thread authentication edge case where the default requestor access group is equal to the dataflow run's access group.