INC-210639 · Issue 705347
Query limit removed from Scenario Planner
Resolved in Pega Version 8.6.4
Scenario Planner was not correctly finding or opening some Audience Simulations. Investigation showed that when there are 500+ completed data flows, the system was failing to load next 500 records from pegadata.pr_data_decision_ddf_runtime. This has been resolved by removing the query limits, and additional debug logging has been added.
INC-211251 · Issue 706539
Handling added for Model level Data type empty values
Resolved in Pega Version 8.6.4
After update, the Email Intelligent Virtual Assistant™ (IVA) was not able find the proper response for the real-time incoming emails but was able to find the topic and response when running it from Dev Studio and Prediction Studio. This was due to an edge case where the model datatype page list property was present on the text analyzer rule and a page was present in it, but the property pyName which actually holds the data type (body, attachment, all) was not present in the page. This has been resolved by updating the system to add 'all' as the datatype if the pyName is blank (null or empty).
INC-211349 · Issue 709605
Service API called directly in CDH simulation
Resolved in Pega Version 8.6.4
Running a simulation from the Customer Decision Hub with strategy and dataflow that used customer data resulted in with either a failed run or blank explain detail reports. Investigation showed synchronization was not triggered due to the pxVBDAvailable call returning false, and this has been resolved by directly calling the service API without additional checks.
INC-212169 · Issue 710513
Log4j file security vulnerability issue addressed
Resolved in Pega Version 8.6.4
A zero-day vulnerability was identified in the Apache Log4j logging software which could potentially allow malicious actors to take control of organizational networks. Pega has immediately and thoroughly addressed this issue. More information can be found at https://docs.pega.com/security-advisory/security-advisory-apache-log4j-zero-day-vulnerability .
INC-212704 · Issue 707115
Explicit lock release added for Cassandra threads
Resolved in Pega Version 8.6.4
Customer Decision Hub was not responding for realtime request REST service calls, and thread dumps during start up were showing all HTTP request threads were stuck in CassandraSessionCache.getSession. If an error is thrown while invalidating an old Cassandra session, the system may fail to unlock the write lock. This results in subsequent threads being blocked on the session cache's ReadWriteLock when they attempt to retrieve the session from the session cache. To resolve this, an update has been made to ensure that invalidate session is wrapped in a finally block that releases the write lock and log any thrown errors.
INC-212754 · Issue 708688
Log4j file security vulnerability issue addressed
Resolved in Pega Version 8.6.4
A zero-day vulnerability was identified in the Apache Log4j logging software which could potentially allow malicious actors to take control of organizational networks. Pega has immediately and thoroughly addressed this issue. More information can be found at https://docs.pega.com/security-advisory/security-advisory-apache-log4j-zero-day-vulnerability .
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.