pyspark managed hive table grant not working

Question

I am using below code to save results of processing from dataframe to a hive table

df.write.mode("append").format("parquet").saveAsTable(tablename)

I am able to access the table using select sql externally, after the spark processing is completed using spark-submit

But another user is getting error "permission denied" I have given the user permission using below grant statement

grant select on table schema1.tablename to user anotheruser;