INC-132976 · Issue 580685
Performance improvements for Test Strategy data flow
Resolved in Pega Version 8.1.9
In the Test Strategy panel under Single case -> "Settings", selecting the "Data flow" option and choosing CustomerData dataflow was taking an excessive amount of time to run on a system with an extremely large database. To improve performance, two areas have been addressed: 1) the default behavior for record key suggestions in the test panel has been modified to collect only the ID as the additional data is not necessary at that time; 2) a DSS has been added that will opt out of reading and collecting the customer IDs in order to minimize data stored on the clipboard.
INC-138037 · Issue 586593
Strategy handling updated for very large systems using IH summary
Resolved in Pega Version 8.1.9
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.
SR-D92734 · Issue 553412
Simulation can take Data flow type as destination
Resolved in Pega Version 8.1.9
Support has been added for Data flow functionality as simulation target and data transform in simulation input.
SR-D16934 · Issue 493702
External Cassandra nodes listed in DDS cluster
Resolved in Pega Version 8.3.1
Nodes of an external Cassandra cluster were not listed in the DDS cluster except for the first one in the host list, and when the “only” listed Cassandra node was restarted, the status on the DDS cluster LP did not become “NORMAL” afterwards. In addition, even though other C* nodes were up and running, the external Cassandra cluster was reported as unreachable. This was an unintended side effect of work done on the landing page to reflect the real state of the nodes after some were killed and restarted, and has been corrected by refining the equals() and hashCode() methods for DDS member info in order to better differentiate the external Cassandra nodes.
SR-D22686 · Issue 493516
IH summaries working with external Cassandra
Resolved in Pega Version 8.3.1
Summaries were not working for external Cassandra. This was an issue with the IH summary component using the aggregated dataset as a reference, and this fix contains several components to improve this function. An issue where the IH aggregates dataset does not materialize when DDS is external Cassandra has been resolved by modifying the code that checks the DDS availability. A filter that was used to match “” did not work when pre-aggregation is off : this was due to the IH Browse operation being done outside of a DF context, and has been fixed. The IH Summary shape not working properly in a strategy if it referenced an aggregate dataset with pxInteractionID as part of the group-by properties was traced to an issue with it generating a pxInteractionID value when executing the strategy, and has been resolved by excluding pxInteractionID from the group keys in the IH Summary shape.
SR-D24880 · Issue 494171
CEP bucket size increased to 1 minute
Resolved in Pega Version 8.3.1
Frequent DSM Data Flow Errors were observed in production nodes with very high event rates. This was traced to the default bucket size for CEP being 1 second for a 31 day window, which was not sufficient to handle high volume use which may create an event strategy window large enough to hit the Cassandra column size limit. In order to resolve this, the default bucket size has been increased from 1 second to 1 minute.
SR-D25184 · Issue 494689
Support added for referencing Page Group property inside of strategy
Resolved in Pega Version 8.3.1
Referencing a page property under Page Group property inside a strategy resulted in a runtime error of ClassCasting: "java.lang.ClassCastException: java.util.ArrayList cannot be cast to com.pega.decision.strategy.ssa.runtime.ClipboardPage". The issue was traced to the SSA optimized code for the GetPage SSA assuming that the GetPage SSA would only have another page as a parent. In order to handle the above scenario where GetPage would have a GetPageCollection as a parent and return a List of ClipboardPages, a GetPage function has been applied over each entry in the results of the GetPageCollection SSA using a MapAction SSA. Some optimizations will be applied in cases where the GetPageCollection has only one entry, which will replace the MapAction with a simple GetPage action.
SR-D26010 · Issue 500163
Modified VBD insertion logic to improve handling
Resolved in Pega Version 8.3.1
An issue with not being able to launch an additional VDB node was traced to two processes inserting into VBD with different field signatures and triggering unnecessary object creation. This was amplified when adding a second node as the objects were serialized. To resolve this, the insertion logic has been modified to avoid creating new data container/field descriptors after a new field is included, as well as a measurement with smaller data type than previous container.
SR-D28038 · Issue 501755
External Cassandra nodes listed in DDS cluster
Resolved in Pega Version 8.3.1
Nodes of an external Cassandra cluster were not listed in the DDS cluster except for the first one in the host list, and when the “only” listed Cassandra node was restarted, the status on the DDS cluster LP did not become “NORMAL” afterwards. In addition, even though other C* nodes were up and running, the external Cassandra cluster was reported as unreachable. This was an unintended side effect of work done on the landing page to reflect the real state of the nodes after some were killed and restarted, and has been corrected by refining the equals() and hashCode() methods for DDS member info in order to better differentiate the external Cassandra nodes.
SR-D32719 · Issue 505260
Compliation error resolved for editing complex offers
Resolved in Pega Version 8.3.1
The following error was logged while trying to edit offers: "com.pega.pegarules.pub.generator.FirstUseAssemblerException: Failed to compile generated Java, com.pegarules.generated.html_section.ra_stream_pyeditelement." Research showed the code for the static initializer was exceeding the 65535 byte limit, causing the java compilation of the pyEditElement section to fail for a decision data rule. This was due to the pyEditElement section for a decision data rule being circumstanced: the assembler architecture of circumstanced section rules generated and added code for all the versions of a circumstanced section. Hence, if the section referenced a lot of properties and it existed in multiple ruleset(s)/ruleset versions, the java compilation for the section rule failed. To correct this, the integration of the pyEditElement section with decision data rules has been revised and enhanced, and a function and utility have been provided to call the function to clean up the old and redundant pyEditElement sections for a given decision data rule.