Koop Vector Tile Service is not clearing graphics of previous map zoom levels at times

[GopinathPD]

Hi Team,

We are using koop.js to render hexagon polygons through vector tile services. Koop services are fetching the data from elasticsearch and sending back to UI (Angular + ArcGIS Javascript API) in the form of polygon geometry. We are observing that the hex tile layer is not clearing at times for some of the tiles. This is not a consistent issue w.r.t any place or data. Most of our users are facing this issue once in a while.

Details:
"@koopjs/provider-elasticsearch": "3.0.0",
"@koopjs/output-vector-tiles": "^2.1.1",
"@elastic/elasticsearch": "^7.13.0",
"dotenv": "^10.0.0",
"express": "4.16.4",
"koop": "^4.0.4",
"koop-output-geoservices": "^2.0.0"

Angular: 9
ArcGIS Javascript API: 4.20

Any help in resolving the issue is highly appreciated.

[rgwozdz]

cc @dhatcher

[jmp601]

We have noticed this behavior too, @dhatcher but I am waiting to test the new stuff you've pushed out. @GopinathPD I would recommend upgrading the elastic provider beyond 3.4.2 as that included fixes for Hex aggs at different precisions. Let me know if this fixes your issue! We've been working a lot with Danny on the elasticsearch provider.