Support Article
getDistinctValuesForProperty API bypasses index to query source
SA-48356
Summary
Pega Marketing utilizes the getDistinctValuesForProperty API to allow Distinct Values indexes to pre-calculate distinct values for certain properties and speed up retrieval of these values.
When the Distinct Value query is unable to match the filter passed in the pre-aggregated index table, then it queries the source table to calculate these results. This allows for accuracy. However, this results in performance degradation when the target table is large.
Error Messages
Not Applicable
Steps to Reproduce
Unknown
Root Cause
The API was working as designed; however, the API design did not consider this use case.
Resolution
Apply HFix-39090.
Published February 19, 2018 - Updated October 8, 2020
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