INC-132164 · Issue 575347
Updated Email Listener sentence detector logic
Resolved in Pega Version 8.4.2
When the Email Listener encountered a specific XLSM attachment, it became hung up in Running state. The email was marked as read in the email box, but the Email Triage case was not created and the Listener did not process subsequent emails. If the Listener was stopped, it would not restart. Investigation showed that multiple numbers of \n followed by a repeating sentence in the document caused the pointer to lag behind and create multiple annotations pointing to the same offsets. This in turn caused the further analysis to run in a really large loop, causing the slowdown. This has been resolved by updating the logic of the post processing for the sentence detector so that the duplicate annotations are not created.
INC-132516 · Issue 571342
Updated reference values for Strategy Rules test execution
Resolved in Pega Version 8.4.2
A Stale Thread exception was seen while running strategies with the test run panel. Investigation showed this was due to the Pega API's "pega" and "tools" references not being synched up, causing the Proposition Filter to use the old "pega" reference even if it was recycled. This has been resolved by updating the system so it will not use the cached "pega" value but it will use "tools" to make sure "pega" is the correct reference.
INC-132532 · Issue 576414
Strategy Exclusion Component naming conflict resolved
Resolved in Pega Version 8.4.2
After upgrade, modifying the RHS of Exclusions shape in Strategy "ExclusionTest" resulted in compilation issues during the save of the Rule. Investigation showed there was a compile time error related to a use case around shapes with exclusion in both sides using an expression provided that does more than just property value access, and which resulted in a naming conflict in the generated code. This has been resolved.
INC-133169 · Issue 572613
Service Registry heartbeat updates
Resolved in Pega Version 8.4.2
If a service (node) did not update its heartbeat for more than 90 seconds, eventually these stale services were removed from the database because the service registry did not consider them present. To resolve this, topology listeners will now use a java thread pool to run their logic and no longer use the heartbeat thread. Even if these listeners are slow, it won't affect the heartbeat and won't cause nodes to become unhealthy. If for some reason the heartbeat becomes slow (due to database issues) it will issue a thread dump to help identify what causes the slowness and aid in troubleshooting.
INC-134097 · Issue 574512
Service Registry heartbeat updates
Resolved in Pega Version 8.4.2
If a service (node) did not update its heartbeat for more than 90 seconds, eventually these stale services were removed from the database because the service registry did not consider them present. To resolve this, topology listeners will now use a java thread pool to run their logic and no longer use the heartbeat thread. Even if these listeners are slow, it won't affect the heartbeat and won't cause nodes to become unhealthy. If for some reason the heartbeat becomes slow (due to database issues) it will issue a thread dump to help identify what causes the slowness and aid in troubleshooting.
SR-D75583 · Issue 547301
JMX access enhancement
Resolved in Pega Version 8.4.2
An enhancement has been added to JMX access that provides two new prconfigs, "dnode/cassandra_jmx_username" and "dnode/cassandra_jmx_password". These allow adding credential requirements to local JMX.
SR-D81328 · Issue 542960
Kafka Disk Space auto cleanup improvements
Resolved in Pega Version 8.4.2
High disk space consumption was seen when using a custom QueueProcessor and standard retention policies. To resolve this, an enhancement has been added which will allow consumed QueueProcessor messages to be removed from the stream as soon as they are processed to avoid out of space issues. This will ignore partitions with undefined positions.
SR-D86469 · Issue 551897
Performance improvements for Test Strategy data flow
Resolved in Pega Version 8.4.2
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.
SR-D87709 · Issue 552400
Default context check added for saving adaptive model with locked rulesets
Resolved in Pega Version 8.4.2
When updating an adaptive model rule in Prediction Studio, the error message "No unlocked Rulesets/Versions found that are valid for this record. Unlock at least one Ruleset/Version that can contain records of this type." appeared when clicking Save. This occurred when a branch was used in the default context of the Prediction Studio settings. Although there was a workaround to use Dev Studio to Save As the adaptive model rule to the required branch, this has been resolved by adding a check for default context and then saving the model there if it is mentioned.
SR-D90367 · Issue 556688
Cleanup enhanced for long pyEditElement names
Resolved in Pega Version 8.4.2
A pyEditElement error relating to decision data was seen multiple times in a stack trace. Research showed that while the utility worked as expected for decision data rules with names of less than 30 characters, the pyEditElement section was truncated the name for the decision data. This meant that decision data with the name SampleIssueandSampleGroupTwosalkdjkightntbmkblffvfvfv would be saved as SampleIssueandSampleGroupT for the pyEditElement section. Because of this, the utility failed the match and did not clean up the pyEditElement section. To resolve this, the cleanup utility has been updated to handle pyEditElement sections of decision data with longer names. Additional logging has also been added to improve debugging.