INC-188882 · Issue 679143
DSS added for configurable asynchronous writes into DDS
Resolved in Pega Version 8.5.6
An enhancement has been added which will allow DDS writes happening within pxDelayedLearningFlow to happen asynchronously and be configurable per node in order to improve performance. name: dnode/save_dds_async_processing_enabled description: Enable asynchronous processing of records in DDS Dataset save operation. Failures to store individual records will not interrupt operation execution.
INC-191350 · Issue 679705
Corrected single case metrics being combined
Resolved in Pega Version 8.5.6
In Single Case dataflow runs, even though the data is processed on nodes, after some point of time the metrics were moving to 'Combined metrics of unavailable node'. This occurred when the corresponding service (realtime) was not available on the node when running the single case run, and has been resolved by updating the system to prevent single case metrics being combined while running on a node without realtime service enabled.
INC-191356 · Issue 679162
External Input setting available on Strategy Batch Performance Test
Resolved in Pega Version 8.5.6
It was not possible to specify the External Input as part of a strategy when using a Batch Performance test. This has been resolved by updating the pzDisplayTestStrategyContext When condition to "true" the so external input selector is properly displayed.
INC-191789 · Issue 679605
Updated SimpleDateFormat to remove lenient parsing mode
Resolved in Pega Version 8.5.6
When using File Dataset to ingest CSV files with the required Date format set as yyyyMMdd, an error was thrown if the date value provided in a file was in the format '14/04/1971', but a date format such as 14-04-1971 did not produce an error but instead was mapped to a Date value of 00131204. . This has been resolved by disabling the lenient mode of parsing in SimpleDateFormat.
INC-192102 · Issue 676359
Performance improvements for stale thread warnings
Resolved in Pega Version 8.5.6
Stale thread warnings were causing performance issues during dataflow run execution. Stale thread/slow component warnings are added as part of the dataflow execution when a processing thread takes more than 5 minutes to process a single dataflow record. The stacktrace of the dataflow thread is added as part of the warning for debugging purposes, but in some scenarios the stacktrace can become very large. This has been resolved by removing the stacktraces from the warning, improving the query logic, and adding the run ID to the exception method to assist if there is an error.
INC-192826 · Issue 685796
PMML updated for nested 'if'
Resolved in Pega Version 8.5.6
Running a model on the openscoring API and the Pega PMML model gave different results. This has been resolved by updating the handling for nested 'if' in PMML.
INC-193326 · Issue 683805
Adaptive model retry mechanism enabled
Resolved in Pega Version 8.5.6
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-193632 · Issue 679171
Cassandra driver metrics exposed for performance troubleshooting
Resolved in Pega Version 8.5.6
By default Cassandra driver metrics are now enabled. Metrics can be disabled by setting the dnode/disable_driver_metrics prconfig parameter.
INC-193986 · Issue 680031
Parameter logic updated for metrics activity counter
Resolved in Pega Version 8.5.6
An error was causing the PushCDHMetrics agent to fail. This was traced to an undefined parameter in the activity which was used as a counter, and has been resolved by replacing it with a local variable of type integer.
INC-194305 · Issue 681679
File Dataset wildcards updated for ADM storage
Resolved in Pega Version 8.5.6
Attempting to access the filepath was failing and an error was seen indicating "Could not obtain lock 'Create repository file pegacloudfilestorage:ADM/Rule-Decision-AdaptiveModel/Data-Decision-Request-Customer". While creating a file name, a lock is generated while checking the file names of existing files. If the file data set has a large number of files, a condition may occur where some threads are unable to save data and an exception is thrown. To resolve this, the wildcard previously used in the file name has been replaced with the Pega node id + thread id + current timestamp. This will ensure all wildcards are unique and there is no need to lock and list existing files.