INC-153223 · Issue 613703
DSS added to set Cassandra query page size limit
Resolved in Pega Version 8.4.4
When a site with a large number of nodes captured responses to the commit log, it was possible for nodes run out of heap space and cause system instability. This was due to the Cassandra query not having a specified page size, so the cluster-wide default setting of 5000 created an issue for large sites which could have over 150 nodes capturing responses. This has been resolved by specifying the page size on the Cassandra query that used to read responses from the commit log. This value will be set dynamically with a DSS to not read more than n responses from all shards combined in a single batch.
INC-154128 · Issue 614295
High thread contention in StrategySSAProgram resolved
Resolved in Pega Version 8.4.4
While Running inbound campaigns during peak times, high contention was observed around "threadSafeWrite" and "threadSafeRead". To resolve this and improve performance, the code around handling write locks has been updated.
INC-154889 · Issue 617191
Corrected export of zero value as '0E-9'
Resolved in Pega Version 8.4.4
File Data Set was exporting properties such as pxPriority and pyPropensity as '0E-9' if the value was 0.00000 . This has been corrected.
INC-155822 · Issue 618268
Locking added to avoid Null pointer exception for auto-populate property
Resolved in Pega Version 8.4.4
After configuring the auto populate property "OrgProduct" which referred to a data page, the system experiencing heavy load led to the property not getting properly initialized. This resulted in a WrongModeException and NullPointerException. To resolve this, the system has been updated to lock the requestor when Queue Processors execute their activity. This will prevent race conditions and concurrent modifications if other threads are accessing the same requestor.
INC-157097 · Issue 619995
REGEX In Expression Builder matches runtime values
Resolved in Pega Version 8.4.4
An expression builder statement was evaluating differently at runtime vs at testing. This was traced to a difference in escape character handling between old legacy code and the new strategy runtime engine, and has been resolved by ensuring the strategy runtime engine is supporting escape character use cases.
INC-157194 · Issue 620152
CheckRevisionDeployment requires authentication
Resolved in Pega Version 8.4.4
Authentication has been added to the CheckRevisionDeployment service package.
SR-69015 · Issue 619995
Unescaping characters implemented for expressions
Resolved in Pega Version 8.3.6, Resolved in Pega Version 8.4.4, Resolved in Pega Version 8.5.3, Resolved in Pega Version 8.6
An issue where expression builder statements were evaluated differently at runtime than at testing has been resolved. Pega Platform expressions with String literals(that is, sequences of characters enclosed in quotation marks) now unescape characters in strategy shapes such as Set Property or Filter.
INC-181148 · Issue 663164
Documentation updated for altering data type to Timestamp to avoid duplicate data in Decision Hub
Resolved in Pega Version 8.5.6
By default, the pxOutComeTime column has a Date data type in the pr_data_ih_fact table. This may cause duplicate data issues. To resolve this, the 8.5 and 8.6 installation and upgrade guides for Pega Customer Decision Hub have been updated to include a new procedure "Modifying column definitions to use the TIMESTAMP datatype in an Oracle database". Performing this procedure will allow users to avoid the duplicate data issue. All documents are available from the Pega Customer Decision Hub product page.
INC-172785 · Issue 662335
Adaptive model retry mechanism enabled
Resolved in Pega Version 8.5.6
Adaptive models were missing from the Model Management page as well as in the Prediction studio while similar models for the same proposition, only differing by the Channel name, were visible. This was traced to data not being synchronized between the database and Cassandra. The pegadata.pr_data_adm_factory database table did not contain the record of the missing channel, but Cassandra did. Since the current Cassandra adm_scoringmodel contained model information, the system still believed the model was present. In order to ensure Cassandra and the database table are in sync, an update has been made to enable the retry mechanism "SyncFactoryKeysTask" to create the ADM model in factory table by periodically looking for scoring models without factories or an entry in adm_meta.
INC-173596 · Issue 660221
Google OAuth and Spring versions updated
Resolved in Pega Version 8.5.6
The Google-oauth-client jar has been upgraded to version 1.31.1, and SpringFramework libraries have been updated to version 5.3.9 .