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INC-128342 · Issue 594185

Improved cleanup for adm_response_meta_info

Resolved in Pega Version 8.6

The adm_commitlog.adm_response_meta_info column family was growing, leading to gradual increase in CPU utilization on the Adaptive Decision Management (ADM) nodes over time. Investigation showed that the compaction on the adm_response_meta_info table was not being triggered by the ADM service, and the compaction did not remove rows that belonged to models that had been deleted. To resolve this, compaction of the adm_response_meta_info table has been moved from the ADM client nodes to the ADM service nodes, which will correctly trigger the compaction on a predefined schedule. The compaction logic has also been refactored to remove rows that belong to models that have been deleted.

INC-136634 · Issue 591679

Thread contention resolved for InteractionHistoryQuery

Resolved in Pega Version 8.6

High thread contention was observed while running Inbound load tests. This was traced to pzLoadInteractionHistory invoking a generated strategy to retrieve ihFields from InteractionHistoryQuery using the getUsedInteractionHistoryFields() method: because this method is synchronized, it caused a bottleneck. To resolve this, the synchronized methods have been replaced with the appropriate data structures.

INC-136969 · Issue 585547

Section and Paragraph rule types added to Revision Manager

Resolved in Pega Version 8.6

An enhancement has been made to add support for section and paragraph rule types in revision management. With this change, the sections and paragraph rule types can be added to overlay and can be added to change requests and modified.

INC-138037 · Issue 586595

Strategy handling updated for very large systems using IH summary

Resolved in Pega Version 8.6

When a Strategy in a Real-time dataflow used IH Summary on a system with more than 5000 groups for one eventKey, the message "Error retrieving aggregates from Cassandra KVS" intermittently appeared. Investigation showed that if the number of result rows was greater than the FETCH_SIZE (set to 5000), it meant another read to Cassandra was required and an exception was generated. To resolve this, updates have been made so that instead of returning maps, the system will return iterators and change them to map on the calling thread.

INC-138103 · Issue 585640

Enhancement added for node heartbeat recovery process

Resolved in Pega Version 8.6

Nodes were not showing up in the admin portal even though they were up and running and could be seen in the pr_sys_statusnodes table. The exception "An exception was encountered while invoking the cluster membership listener callback" was seen. All nodes became visible again after multiple restarts. The root cause was traced back to a temporary database connectivity problem. The database itself was fine according to database monitoring reports, but a network problem, a slow database query, or another issue prevented Pega from establishing a connection for more than a minute. An enhancement has been made to resolve this: if a node becomes unhealthy due to the service registry missing due to a failed heartbeat, the heartbeat will try to recover after 60 seconds and keep trying every 30 seconds until it succeeds.

INC-138501 · Issue 592288

Added VBD support for CSRF token setting

Resolved in Pega Version 8.6

Attempting to open any VBD reports in the marketing portal for a simulation test caused the user to be logged out. Investigation showed that this happened when CSRF token check was enabled in System > Settings > Cross-Site Request Forgery, and was caused by the planner not passing the CSRF tokens in its Ajax calls. To resolve this, handling for the CSRF tokens has been added to the necessary Ajax calls.

INC-139371 · Issue 588236

Enhancement added for node heartbeat recovery process

Resolved in Pega Version 8.6

Nodes were not showing up in the admin portal even though they were up and running and could be seen in the pr_sys_statusnodes table. The exception "An exception was encountered while invoking the cluster membership listener callback" was seen. All nodes became visible again after multiple restarts. The root cause was traced back to a temporary database connectivity problem. The database itself was fine according to database monitoring reports, but a network problem, a slow database query, or another issue prevented Pega from establishing a connection for more than a minute. An enhancement has been made to resolve this: if a node becomes unhealthy due to the service registry missing due to a failed heartbeat, the heartbeat will try to recover after 60 seconds and keep trying every 30 seconds until it succeeds.

INC-139574 · Issue 606142

Exception handling added for dataflow rule assembly

Resolved in Pega Version 8.6

A Blue Screen error was coming up in the Customer Service Web Chat Application after an agent accepted the incoming chat request and sent messages in the chatbox in the Interaction portal. This has been resolved by adding handling for exceptions that occur when inlining templates during dataflow rule assembly, when inlining templates, we weren't handling exceptions properly.

INC-140160 · Issue 597036

NLP model update reflected on utility nodes

Resolved in Pega Version 8.6

After training models on a web node, model updates were not reflected in the email listeners running on the utility nodes. This was traced to the implementation of the model storage using obj-save, which does not propagate the static content on nodes apart from where it was saved. To resolve this, the implementation has been updated to use WBSave which clears static content on all the nodes.

INC-140210 · Issue 591884

RUTA scripting documentation updated

Resolved in Pega Version 8.6

Additional documentation has been added around the variables available for RUTA scripts for entity extraction. This includes information on explicitly clearing the variables that are declared in the scripts, which may be necessary for ensuring the correct entity extraction. https://community.pega.com/knowledgebase/articles/decision-management-overview/detecting-transaction-details-ruta

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