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

INC-169544 · Issue 649541

Enhancement for MaxEnt modeling data

Resolved in Pega Version 8.7

An enhancement has been added to create output for the model coefficients, the term frequency, and the inverse term frequency for use in maximum entropy modeling. For MRM processes, every Maximum Entropy (Maxent) based topic model will contain two additional stats resources. These resources can be used to validate and replicate running of topic model outside of Pega. The resources are: 1) Term Frequency file – A CSV file with all words used for training and their cumulative frequency across training set. File name format – TRAINING_DATA_TERM_FREQUENCY_< RandomNumber >.csv olumns – Word, Count 2) Coefficient file – A CSV file with all features (words, taxonomy matches and category matches) and model learnt weights for each topic across training set. File name format – MAXENT_COEFFICIENT_VALUE.csv Columns – Feature, < TopicName1 >, < TopicName2 > ,…, < TopicNameK >

INC-170721 · Issue 658960

Stricter criteria set for reusing an SSAExecutionContext

Resolved in Pega Version 8.7

After a Strategy was configured with an existing Proposition Filter and the Explain Results box was unchecked, executing the strategy resulted in the error "Stack is empty, cannot pop any more frames". Investigation showed that the SSAExecutionContext object was reused across the two criteria evaluation in Proposition Filter rule: this works well as long as the input is the same across the two evaluations. However, the SSAExecutionContext object also stashed a reference to a PublicAPI object which became stale in the second evaluation and caused the empty stack issue for the given scenario. This has been resolved by providing stricter criteria in deciding when an SSAExecutionContext can be reused or not in the case of Proposition Filter rule.

INC-171594 · Issue 656183

Spell check correctly applied to email body

Resolved in Pega Version 8.7

Spell check was not being applied to email body for text analysis in Email Channel. This has been resolved to work irrespective of case.

INC-172785 · Issue 662334

Adaptive model retry mechanism enabled

Resolved in Pega Version 8.7

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 660219

Google OAuth and Spring versions updated

Resolved in Pega Version 8.7

The Google-oauth-client jar has been upgraded to version 1.31.1, and SpringFramework libraries have been updated to version 5.3.9 .

INC-174550 · Issue 658393

Alternative pyLabel source for Auto-generated Proposition Filter added as fall back

Resolved in Pega Version 8.7

After using save-as to move an offer/action rule containing eligibility criteria into a new ruleset /branch, the criteria disappeared. Proposition Filter has an explicit dependency on relevant records, and in this scenario investigation revealed all of the relevant records had been previously deliberately deleted. Using save-as on auto-generated CDH rules like actions is also not a best practice. To better handle unexpected actions like these and avoid the hard dependency on Relevant Records, when creating the Proposition Filter via the programatic API the system will fall back to reading the label from the sourcePage if is not possible to get the label from Relevant Record.

INC-174661 · Issue 678822

Handling added for clearing node killed between assignment and processing

Resolved in Pega Version 8.7

An Offer flow was not resuming after it expired according to the wait shape. Investigation traced this to partitions which were assigned to a dead node in NEW state where they were not picked up by the dataflow. The problem was only encountered in the unusual situation when a dataflow node was killed in the brief period of time between the assignment and the processing, and has been resolved by adding an update which will clear unknown new assigned partitions for the batch run health task.

INC-174781 · Issue 655121

Kerberos authentication added for external Cassandra

Resolved in Pega Version 8.7

Support has been added for Kerberos authentication with Cassandra.

INC-174933 · Issue 651829

Special characters escaped for use in "is in List" lookups

Resolved in Pega Version 8.7

After creating a specific criterion on any proposition using a string property, the "Is In List" operator, and a customer list with one value containing a "$", clicking save or check in resulted in the exception error "Problem invoking function: pega_decisionengine_propositionfilterfua.pzPropositionFilterMethodBody--(PublicAPI,ClipboardPage) java.lang.IllegalArgumentException: Illegal group reference at java.util.regex.Matcher.appendReplacement(Matcher.java:857) ". This has been resolved by escaping regular expression control characters in string replacement, which will allow the use of characters such as the $ sign for "is in List" lookups.

INC-175207 · Issue 655554

Added handling for DSM Services stuck in leaving status after database outage

Resolved in Pega Version 8.7

During a database outage, the heartbeat would fail and DSM services would eventually try to enter safe mode and stop. As the first step they would try to change the state to LEAVING, but because the database was down saving the LEAVING state failed and the exception was not handled correctly. This resulted in the rest of the stop operation logic not being executed and the service being stuck in LEAVING. To resolve this, an update has been made to ensure the service goes to LEAVING_FAILED if anything fails during the stop operation including when setting state to LEAVING_FAILED. The state LEAVING_FAILED will get flushed to the database eventually when it comes back up. This will allow the aggregation service to start from the LEAVING_FAILED state and recover by itself after a database outage.

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