SnowflakeRecordReader throws ArrayOutOfBoundsException upon Different Header and Row Lengths

During Snowflake source plugin operation, the plugin first uses a COPY INTO command to copy the data from the source table into staging files, and then each executor creates a new SnowflakeRecordReader to process one of the staging file splits. However, the SnowflakeRecordReader makes the assumption that each file has a header row which matches the lengths of the row length (code), but we have run into some issues where this may not be the case.

We should explicitly be checking the row length matches the header length for each record and either throwing the proper error or logging a warning for row which does not match.