@Nes_Hdr Single user compute uses fine-grained access control to access the tables with RLS/CLM enabled.There is no specific details about OPTIMIZE being supported in Single user mode. Under this doc limitations of FGAC mentions that
"No support for...
@bcsalay This could possibly be a cache issue. Are you doing dataframe.cache() anywhere in your code? if so please follow that by using unpersist()Also can you use the below config at cluster levelspark.databricks.io.cache.enabled false