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Resolved Issues

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INC-126129 · Issue 569666

PropertyToColumnMap made more robust

Resolved in Pega Version 8.1.9

The DF_ProcessEmails dataflow was intermittently failing with a StageException error. This was traced to schema changes being propagated asynchronously by system pulse, which seem to have caused PropertyToColumnMap to cache stale schema. To resolve this, if the property mapping is not found the first time, the system will make a second attempt to get the mapping. Additional logging has also been added for better diagnostics.

INC-128385 · Issue 564521

Behavior made consistent between SSA and legacy engines

Resolved in Pega Version 8.1.9

There was a behavioral disparity between the legacy execution engine and the SSA engine where the latter was not creating a new page when the index was one above the size of the page list. This has now been corrected in order to make the SSA behavior fully backward compatible with the legacy engine, i.e. a new blank page will be added to the list if the index is one above the size of the list.

INC-129222 · Issue 568530

Handling improvements for commit logs

Resolved in Pega Version 8.1.9

The ADM commit log logs the number of unconsumed messages that are going to expire. In certain circumstances, it can include unconsumed messages that are not going to expire in the count. Because they are not expired and removed, the environment was running out of disk space due to the ADM commitlogs table growing larger than expected and performance issues were seen. To resolve this, a new adm_commitlog.adm_responses_commit_log_date_tiered table has been created, with a default_time_to_live of 24 hours. DateTieredCompactionStrategy has been set with max_window_size_seconds as 24hrs and tombstone_compaction_interval as 24hrs.

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-A6740 · Issue 214445

Bulk delete activity added for ADM models

Resolved in Pega Version 7.2

In order to support the deletion of ADM models in bulk, an enhancement has been added to remove the unwanted models from the database provided a list of them is given as input. The activity pxDeleteModelsByCriteria has been created; "Used to delete ADM models in bulk. Models to be deleted are determined by the criteria selected by this Activity's parameters; a model is deleted if it matches all selected criteria."

SR-A8236 · Issue 217334

Data flow respects vertical scalability settings

Resolved in Pega Version 7.2

The number of threads per node specified in Decision->Simulation Settings->Topology landing page was not taken into account by data flow execution, leading to the inability to configure vertical scalability per PRPC node and/or exclude certain nodes from data flow execution. This was an error where the configuration was being ignored and a default value was always used, and has been corrected.

SR-A5666 · Issue 215313

Flow Image available in "WhereAmI" option of iframe

Resolved in Pega Version 7.2

In some cases, it was not possible to see a flow canvas when the request was made from external system (e.g.. calling Pega URL from iframe). The framework was not taking into account the case where the frame was embedded in a document from a different domain. The cause of this issue is that the iframe and the parent frame have different origins, which prevents Viewer Data registering correctly. The system has been updated to detect whether the parent frame has the same origin as iframe, then choose correct the parent context to register Viewer Data. The object used to contain viewer data should be created in the right context in order to avoid cross origin exceptions.

SR-A7256 · Issue 218467

Flow image resolution now set by default

Resolved in Pega Version 7.2

In some flows with widely spaced shapes, the resolution of the flow image was insufficient- i.e., the text inside the flow shapes is not legible. The flow image is captured at a user defined zoom level, causing the captured flow images to have non-uniform resolution. The image capture now is done at a default origin and zoom level. The image capture will then restore the user selected zoom level after the capture happens.

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