I was playing with the samples available on Github (GitHub - Esri/arcgis-runtime-samples-android: ArcGIS Runtime SDK for Android Samples ) and while profiling one of the application, I observed that the native memory usage increases everytime I rotate the device (about 10Mb every rotation) as shown in the screenshot below.

I profiled two (raster-layer-file and raster-layer-service)applications available in the samples repository and the issue was reproductable in both of them.
The issue is reproductable in runtime100.1 and 100.2.
Regards,
Patrick