Bug
Performance degradation is encountered in ArcGIS API for JavaScript 4.x when a large dynamic map service layer referencing a query layer is added to a new map.
| Bug ID Number | BUG-000118425 |
|---|---|
| Submitted | November 28, 2018 |
| Last Modified | June 5, 2024 |
| Applies to | ArcGIS GIS Server |
| Version found | 10.4.1 |
| Operating System | N/A |
| Operating System Version | N/A |
| Status | Will Not Be Addressed |
Additional Information
The issue happens on the server end. There are no plans on addressing it in ArcGIS API for JavaScript.Workaround
When performing a query with the goal of returning a count of features, a possible workaround is to place the following JSON in the in the outStatistics (Output Statistics) parameter at REST while returnCountOnly remains false: [{ "statisticType": "count", "onStatisticField": "ObjectID", "outStatisticFieldName": "OIDs"}]This method results in the query results being returned in under 1 second.The Javascript API should use the outStatistics parameter instead of returnCountOnly when retrieving a count of features in a layer upon adding the FeatureLayer to a map.Steps to Reproduce
Bug ID: BUG-000118425
Software:
- ArcGIS GIS Server
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