QUESTION
How to force TileArcGISRest.updateParams() to redraw tiles?
ANSWER
updateParams() may still be experimental in TileArcGISRest (not indicated in API as of 11/19/15 version 3.11.1)
Use TileWMS source instead!
Implements the following in OL3:
• WMS get feature info working with template populated from GeoJSON
• Dynamic CQL filtering of WMS request
• USGS TNM (The National Map) tiled base map layers