# Considerations and limitations
<a name="Deltaconsiderations-limitations"></a>
+ Delta Lake is supported for use with Amazon EMR releases 6.9.0 and higher. You can use [Apache Spark](https://aws.amazon.com/emr/features/spark/) 3.x on Amazon EMR clusters with Delta tables.
+ We recommend that you use s3 URI scheme for S3 location paths instead of s3a for best performance, security and reliability. For more information see [Working with storage and file systems](https://docs.aws.amazon.com/emr/latest/ManagementGuide/emr-plan-file-systems.html).
+ With Amazon EMR 7.0, Delta Universal Format (UniForm) and convert-to-Iceberg statements aren't supported.
+ With Amazon EMR 6.9 and 6.10, when you store Delta Lake table data in Amazon S3, column data becomes `NULL` after column rename operation. This issue is resolved with Amazon EMR 6.11. For more information about the experimental column rename operation, see [Column rename operation](https://docs.delta.io/latest/delta-batch.html#rename-columns) in the Delta Lake User Guide.
+ When using EMR Delta with Glue in the Beijing (cn-north-1) region, set `hive.s3.endpoint` to `https://s3---cn-north-1.amazonaws.com.rproxy.goskope.com.cn`.
+ If you create a database in the AWS Glue Data Catalog outside of Apache Spark, the database could have an empty `LOCATION` field. Because Spark doesn't allow databases to be created with an empty location property, you'll get the following error if you use Spark in Amazon EMR to create a Delta table in a Glue database and the database has an empty `LOCATION` property:

  ```
  IllegalArgumentException: Can not create a Path from an empty string
  ```

  To resolve this issue, create the database in the Data Catalog with a valid, non-empty path for the `LOCATION` field. For steps to implement this solution, see [Illegal argument exception when creating a table](https://docs.aws.amazon.com/athena/latest/ug/notebooks-spark-known-issues.html#notebooks-spark-known-issues-illegal-argument-exception) in the *Amazon Athena User Guide*.