Unable to access AWS S3 - Error : java.nio.file.AccessDeniedException

[Madhawa]

Reading file like this "Data = spark.sql("SELECT * FROM edge.inv.rm") 

Getting this error 

org.apache.spark.SparkException: Job aborted due to stage failure: Task 10 in stage 441.0 failed 4 times, most recent failure: Lost task 10.3 in stage 441.0 (TID 204) (XX.XX.X.XX executor 0): com.databricks.sql.io.FileReadException: Error while reading file s3://edge-dataproducts-s3/inv/RM/part-002-c7e-12-8d9-fa1.c0.snappy.parquet.                                                                                                                      

Caused by: java.nio.file.AccessDeniedException: s3a://edge-dataproducts-s3/inv/RM/part-002-c7e-12-8d9-fa1.c0.snappy.parquet   

Tried different clusters types, spark run time versions, still getting the same error.

Any suggestions to solve this error ?

[Madhawa]

My concern is that sometimes I am able to run it without any errors, and other times I get this error. Why is that?