Optimize SND data import #268
Merged
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Rationale
The importRows code path is failing with duplicate EventId errors. This code path was introduced to speed up the code when the SND data is initially loaded on the server. Unfortunately, a recent change to reduce the MAX_MERGE_ROWS has caused this code path to be taken in other situations.
We need to ensure the importRows code path is only triggered by the initial data load.
Changes
Updated mergeRows in EventDataTable and AttributeDataTable.