SR-D84190 · Issue 547175
Post-Import Migration Agent query optimized
Resolved in Pega Version 8.4.1
A Post-Import Migration agent belonging to the Pega-ImportExport Ruleset and set to run every 60 seconds by default triggered the SQL query "select ASTERISK from pegadata.pca_CWT_CXP_Work_Interaction" which ran for an excessive amount of time, caused a utilization spike, and then crashed the utility nodes. Investigation showed the excessive run time and load was caused by the query fetching a very large number of results. To better handle this scenario, the query usage has been updated.
SR-D84795 · Issue 546204
Handling added for NOT NULL primary key requirement
Resolved in Pega Version 8.4.1
The CRMFS application upgrade failed during an upgrade of a Production-clone environment to Pega 8.3.1 with the error "Encountered an issue applying DDL: ALTER TABLE pegadata.pr_History_PegaSAFS_Data_ReasonCode ALTER COLUMN pzinskey DROP NOT NULL: Database-General Problem executing SQL to update database schema ERROR: column "pzinskey" is in a primary key." This occurred because the database had a table column as primary key with a NOT NULL modifier while the archive that needed to be imported had a table column with neither the primary key nor NOT NULL modifier in it. Therefore during import the system was trying to drop the NOT NULL modifier first, resulting in the error as NOT NULL cannot be removed if it is a primary key. To resolve this, handling has been added for the use case of not dropping the NOT NULL requirement for the primary key.
SR-D85745 · Issue 545906
DASS and DAS associated to the Pega-ProcessCommander Ruleset
Resolved in Pega Version 8.4.1
An upgrade was failing at the point of Pega Rules Upgrade in the Installer Instance with the error "Encountered database exception when preprocessing deferred operations <insert updatesCache instance DATA-ADMIN-SYSTEM PEGA not only if new>. This node not found in the database - Either the record was never saved or was deleted. Unable to join the cluster." This error occurred because the strategic application import during upgrade manually included a "systemname" DASS instance which had a value other than "prpc". This caused a override of the platform shipped DASS (with value "prpc), which is required by the upgrade. In order to avoid this condition, DASS and DAS have been associated to the Pega-ProcessCommander Ruleset.
SR-D89002 · Issue 549104
SameSite cookie setting updated for pre-authentication
Resolved in Pega Version 8.4.1
In work done in previous versions to modify the SameSite cookie handling to support Mashups in Google Chrome v80+, SameSite was set to None only in case of an authenticated Pega-RULES cookie and not for a Pre-authenticated cookie. That caused the Samesite value to not be set when using a pre-authenticated cookie, and the blank value was treated as 'Lax', causing a login challenge. To resolve this, Samesite will be set to 'None' when using pre-authenticated cookie, which will match the way it is being set in authenticated cookie.
SR-D90485 · Issue 549270
SameSite cookie setting added for Mashup support in Google Chrome v80+
Resolved in Pega Version 8.4.1
The Google Chrome browser version 80 and above now treats SameSite with a blank value as "Lax" by default, causing mashup scenarios to break. In order to compensate for this change, support has been added for setting SameSite=None in Cookie Settings; this value automatically includes the “secure” cookie flag, which enforces HTTPS for the Pega server and mashup. For mashups to work, SameSite should be set as None. Create a Dynamic system setting in the Pega-Engine RuleSet with the name “security/csrf/samesitecookieattributevalue” and the value "None" and restart the server. (The SameSite value "None" works only in secure HTTPS connections.) Note: The SameSite cookie may be set to None/Lax/Strict, based on the requirement. For cookie requirements other than mashup, it should be set as either Strict or Lax, depending upon your application.
SR-D90524 · Issue 549048
SameSite cookie setting added for Mashup support in Google Chrome v80+
Resolved in Pega Version 8.4.1
The Google Chrome browser version 80 and above now treats SameSite with a blank value as "Lax" by default, causing mashup scenarios to break. In order to compensate for this change, support has been added for setting SameSite=None in Cookie Settings; this value automatically includes the “secure” cookie flag, which enforces HTTPS for the Pega server and mashup. For mashups to work, SameSite should be set as None. Create a Dynamic system setting in the Pega-Engine RuleSet with the name “security/csrf/samesitecookieattributevalue” and the value "None" and restart the server. (The SameSite value "None" works only in secure HTTPS connections.) Note: The SameSite cookie may be set to None/Lax/Strict, based on the requirement. For cookie requirements other than mashup, it should be set as either Strict or Lax, depending upon your application.
INC-161984 · Issue 638858
Web Tier busy threads released on timeout
Resolved in Pega Version 8.7
Tomcat Web Tier Busy Threads were not being correctly released, causing stability and performance problems that included health check pings not receiving a thread to service the request so the node was marked as bad, users were quiesced, and the node replaced. Investigation showed the 'put' on the blocking queue did not time out when the queue was full and waited indefinitely, keeping the thread blocked. To resolve this, the system will use 'offer' on the blocking queue instead of 'put' to force thread release on timeout. In addition, debug logs have been added to understand when the offer (or Put) does not succeed and the state of the queue that is causing this issue; the debug logs for class com.pega.pegarules.session.internal.serverpush.RoboticAutomationImpl should be enabled only if the thread busy issue is observed and for limited time window while actively debugging.
INC-164794 · Issue 637993
Apache Commons libraries updated
Resolved in Pega Version 8.7
Apache commons-codec has been updated to version 1.15 , and Apache commons-io has been updated to version 2.7.
INC-168696 · Issue 645531
Improved logging for column population exceptions
Resolved in Pega Version 8.7
Improvements have been added to logging to assist in capturing issues with OptimizationMetadata that could lead to a ColumnPopulationException.
INC-170599 · Issue 645222
DSS partition count setting made backward compatible
Resolved in Pega Version 8.7
After upgrade, the DSS 'dsm/services/stream/pyTopicPartitionsCount' used to limit the number of partitions was no longer working and instead used the default value of 20. This has been corrected and made backwards compatible.