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Pega Platform Resolved Issues for 8.1 and newer are now available on the Support Center.

SR-D78940 · Issue 542928

Dataflow monitoring enhanced

Resolved in Pega Version 8.4.1

Enhanced monitoring and healthchecks have been added for dataflow and alerts.

SR-D79145 · Issue 543055

Added tokenizer for KeyWord-Based Topic Detection phrases

Resolved in Pega Version 8.4.1

KeyWord-Based Topic Detection was not Working for "Enrollment/Re-Enrollment" as a word, for example a categorization model with the text 'This is an email related to Enrollment/Re-Enrollment'. To facilitate this use, a tokenizer has been added to break 'should',' must', and 'and' words into components for a taxonomy match.

SR-D82150 · Issue 546532

Properties persist after revision import

Resolved in Pega Version 8.4.1

"When properties were added to a form, they sometimes disappeared after revision import even though the properties always remained visible in a strategy. Investigation showed that the Form changes made in a DD rule were not properly updated in the pyEditElement section. To correct this, logic has been added to handle the form changes in the DD in the following activities:Data-Rule-Summary.pyMergePropositions Data-Rule-Summary.pyRemoveDDRules Data-Rule-Summary.pyWithdrawDDChanges Data-Rule-Summary.pyRemoveRestoreDDRule"

SR-D82727 · Issue 547725

Improved management for table pr_log_dataflow_events

Resolved in Pega Version 8.4.1

The Lifecycle event table was sometimes growing too large. This additional strain of database transaction volume caused poor performance on the Dataflow tier and lead to cluster instability and time-consuming cluster restarts. Due to problems in one of the Pulse tasks, the Pulse thread was not processing single case metrics properly and causing the unbounded queue for single case to grow. This has been addressed by switching to a fixed queue size, which is configurable with the DSS: dnode/single_case_queue_size. The default value of the DSS is 4000, and if changed a system restart is required. An error will be logged each 1000 queue misses, and metrics will be dropped if the queue is full. In addition, the Pulse task frequency has been improved and managed to prevent interference with other Pulse tasks and will be triggered only if a run is system-paused for a long interval. Rebalances now have a failsafe if something unexpected happens during the Pausing of the run, and If the cluster becomes unstable, the life cycle events logs may be disabled with dataflow/run/events/persist .

SR-D85095 · Issue 546342

Updated COUNT logic for strategies with ssavm set to true

Resolved in Pega Version 8.4.1

An error was seen when attempting to save a strategy after setting ssavm to true, indicating an issue in the “COUNT” method in Group By shape. Since the source field is not used and does not need to be evaluated here, the system has been updated to ignore the source field if the operation is COUNT.

SR-D85558 · Issue 548287

Handling added for prolonged Heartbeat Update Queries

Resolved in Pega Version 8.4.1

After restart, the pyFTSIncrementalIndexer queue size had hundreds of thousands of entries even though it was empty prior to the restart.Investigation traced this to a job scheduler that checked all the database connections everyday at 1 EST by using a list that contained some connections which did not exist. Checking those invalid connections caused other update queries to queue and wait, resulting in the update heartbeat query taking longer than its default beat. This caused a Split Brain issue wherein other nodes considered the long-executing node to be dead and triggered a rebalance while the node itself continued to execute partitions thinking that it was healthy. This caused duplicate processing of records. To resolve this, a fail safe has been added: while updating heartbeat in Service Registry, nodes will enter safe mode when the update query is taking longer than the default beat.

SR-D89012 · Issue 550801

DelegatedRules refresh icon made accessible

Resolved in Pega Version 8.4.1

When using Accessibility, the refresh icon in pzDelegatedRules was being read as "Link". This has been corrected by adding text for the refresh icon.

SR-D89428 · Issue 550393

Data Flow StartTime uses locale timezone

Resolved in Pega Version 8.4.1

The start time of the dataflow was displayed in GMT instead of the operator locale timezone. This has been corrected.

SR-D89643 · Issue 548293

Old Tumbling Time data in event strategies given TTL for cleanup

Resolved in Pega Version 8.4.1

Old Tumbling Time data keys in event strategies were not being cleaned up, causing Cassandra timeouts after the dataflow run had been running for several months. The longer the dataflow was running using standard compaction, the more the data was potentially spread out across SSTables and the slower it became. This has been resolved by adding a 'time to live' value for tumbling time windows, and event strategies has been switched to use leveled compaction by default.

SR-D67316 · Issue 541206

Cross-site Scripting protection for PegaRULESMove_Skimming_Query

Resolved in Pega Version 8.4.1

Cross-site Scripting protection has been added for input parameter toRSV of the activity PegaRULESMove_Skimming_Query.

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