INC-211349 · Issue 709606
Service API called directly in CDH simulation
Resolved in Pega Version 8.7.2
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-212704 · Issue 707116
Explicit lock release added for Cassandra threads
Resolved in Pega Version 8.7.2
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-213176 · Issue 709975
Data flow stability improvements
Resolved in Pega Version 8.7.2
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 707345
Addressed performance issues for classless DSMClipboardPage
Resolved in Pega Version 8.7.2
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-213217 · Issue 714192
Updated context handling for executing data transforms in dataflows
Resolved in Pega Version 8.7.2
When performing a sort operation in a data transform on a page list and invoking the Data transform through a Data flow, a java.lang.UnsupportedOperationException was generated on the sort step even though the data was correct. Investigation showed that the dataflows were using a different execution context than the context used for regular activity execution. An update has been made to ensure the correct context is being used while executing data transforms in dataflows.
INC-213945 · Issue 709366
Additional logging and executor work for Adaptive Decision Manager
Resolved in Pega Version 8.7.2
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-215005 · Issue 713191
Made CommitLog messages more resilient to class change
Resolved in Pega Version 8.7.2
Persistent class mismatch exceptions were seen while refreshing the ADM models after updating from Pega 8.5. This was caused by changes to the Cassandra adm_commitlog message schema which caused the commit log messages generated to be incompatible with the deserialisation logic present in higher versions of Pega, but as the commit log messages had a time to live of 24 hours the issue self-resolved. However, this has been resolved by setting serialVersionUID for the ModelParameters class so CommitLog messages are now compatible with future minor and patch releases.
INC-216490 · Issue 713633
pxIdentifier dynamically set for DecisionData while using GOS
Resolved in Pega Version 8.7.2
When using a Decision Data component in a strategy which was wrapped with Globally Optimized Strategy (GOS), no results were generated from the DataJoin shape under optimized execution. Investigation showed this was caused by a missing .pxIdentifier for the DecisionData shape during GOS execution. There was a workaround of unselecting the checkbox on the Advanced tab in the Decision Data component, but this has been resolved by updating the strategy kernel service so it will dynamically construct the pxIdentifier based on the skills assignment module (SSA).
INC-217728 · Issue 712731
Made CommitLog messages more resilient to class change
Resolved in Pega Version 8.7.2
Persistent class mismatch exceptions were seen while refreshing the ADM models after updating from Pega 8.5. This was caused by changes to the Cassandra adm_commitlog message schema which caused the commit log messages generated to be incompatible with the deserialisation logic present in higher versions of Pega, but as the commit log messages had a time to live of 24 hours the issue self-resolved. However, this has been resolved by setting serialVersionUID for the ModelParameters class so CommitLog messages are now compatible with future minor and patch releases.
INC-218757 · Issue 714551
AESRemote updated to be asynchronous
Resolved in Pega Version 8.7.2
The Autonomic Event Services (AES) agent PushCDHMetrics became stuck and was not pushing metrics to the console. This has been resolved by updating AESRemote to be asynchronous.