Hi Everyone,   I have a basic question. While inserting data from a dataframe to an existing Hive Table.   I am using like in pySpark, which is always adding new data into table. (works fine as per requirement)   df.write.insertInto(table)  but as per Spark docs, it's mentioned I should use command as  df.write.mode("append").insertInto("table")  Is it necessary to use mode("append") ? ... View more