INC-166498 · Issue 637350
Locking and classmap improvements
Resolved in Pega Version 8.3.6
Threads were getting stuck inside classMap and tableInformationMap, causing nodes to go down. This was traced to issues with class map performance and locking, and has been resolved by replacing the lock library with a newer version and refactoring the tableInformationMapImpl class to use a concurrent hashmap instead.
INC-166498 · Issue 637054
Performance improvements for sites with a large number of tables
Resolved in Pega Version 8.3.6
Performance impacts were seen when there were a very large number of tables in the database and the cluster/node persistence jobs were running. This was traced to the volume of metadata / schema introspection queries fired from the pyPersistNodeState and pyPersistClusterState jobs along with the Classmap cache invalidation / lookup queries, and has been resolved by improving the code to avoid database introspection when the current number of tables is greater than a maximum value.
INC-166631 · Issue 637021
Optimizing helper class enhanced to handle external databases
Resolved in Pega Version 8.3.6
Running a BIX extract that included a manifest for a target database was resulting in a null pointer exception for the manifest extraction. Attempting to generate the DDL for the manifest table also failed. This was traced to an issue with the helper class using a hardcoded default database for forming the queries, causing it to ignore the DB config/DADN/prconfig for the Oracle database and form a query using the PegaRules' database credentials. This only occurred when trying to do external database operations on a different DB platform; Oracle PegaRules worked as expected with an Oracle external DB and Postgres Pegarules worked with a Postgres external DB, but mixing Postgres PegaRules and an Oracle external DB would result in the null pointer error. To resolve this, the helper class has been enhanced to work with external databases by passing the database name as a parameter so it will properly calculate the query based on the type of target. The default for 'database/oracle/allowOptimization' is set to false: additional database privileges must be added or some configurations must be updated to provide the information needed in lieu of the privileges before making use of these optimizations. In addition, an error in the name of the class has also been corrected and is now available as PerformanceHelper rather than the previous "PerformaneHelper".
INC-168334 · Issue 648372
Locking added to avoid null pointer error for auto-populate property
Resolved in Pega Version 8.3.6
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-169764 · Issue 645803
Decision table query performance improvements
Resolved in Pega Version 8.3.6
Severe latency was seen after upgrade, and it was not possible to save business rule changes. This was traced to an issue with the decision rule being treated as a custom rule, and has been resolved by inserting a check. In addition, optimization has been added for queries on the pr_sys_decchg table.
INC-170841 · Issue 646186
Resolved PRQueueLockException
Resolved in Pega Version 8.3.6
A Class Queue not found exception resulted when an SLA was deleted on the same transaction where it was created when deferred save was used. This was an inadvertent side effect of work done on the QueueManager implementation to invalidate previously deferred operations for item and schedule removal, and has been resolved by clearing the processing state for PRQueueLockException when an item reservation fails.
INC-161645 · Issue 634639
Java Bean import updated to handling differences in Java 7 and Java 8
Resolved in Pega Version 8.5.5
The behavior of the java bean Introspector class is inconsistent across different versions of the JDK when detecting indexed properties built off of java.util.List objects, causing Java Bean import to generate differently in Java 7 and Java 8. This has been resolved by updating PRIndexedPropertyDescriptor to better handle this JDK difference by resolving indexed read and write methods manually using simple reflection.
INC-163292 · Issue 635839
Portlet service deprecated
Resolved in Pega Version 8.5.5
Portlet authentication services have been removed from the standard installation package. The IAC service has been restored.
INC-158018 · Issue 633374
Archiving updated to include pxobjclass in CTE column list
Resolved in Pega Version 8.5.5
After enabling the case archival feature on a casetype, cases were getting stuck in the Archive-Ready state while being archived, and a 'column not found' error was seen. Investigation showed that the generated SQL statement used to retrieve the resolved case instances used a common table expression (CTE) whose columns were inskey, insclass, and parentinskey, and the query that referenced the CTE was attempting to compare the column pxobjclass when pxobjclass did not exist in the CTE's column list. To resolve this, the CTE column list has been updated to pzinskey, pxobjclass, and parentinskey to prevent the 'column not found error' from occurring, and the query that referenced the CTE was also updated to use the correct column names and aliases.
INC-159244 · Issue 627864
Bulk actions check in preserves declare expression legacy setting
Resolved in Pega Version 8.5.5
When a declare expression was saved in legacy mode with "Whenever used" selected in change tracking, performing a bulk check-in of the rule caused the expression to default to the new forward chaining method. This did not occur when using a direct check-in. Investigation showed this was caused by the check-in page holding a legacy value before the step execution, and has been resolved by adding a pre-save activity before the validation activity that will restore the .pyIsLegacy value from .pyExpressionTypeSelector, if set.