TABLE 1.

Feature comparison with some popular data lake systems on the market.

	Delta Lake	Apache Iceberg	Apache Hudi	Apache Kudu	AWS Data Lake (Dremio)	ProtoDLS
Hadoop support	√	√	√	–	–	√
Metadata management	√	√	√	√	√	√
Workload management	–	–	–	–	√	√
Data governance	–	–	–	–	√	√
Streaming	√	√	√	√	√	√
Versioning	√	–	√	–	√	–
Spark SQL	√	–	√	√	–	–
Index	–	√	√	√	√	√
Row-level update	√	√	√	√	√	–
ACID transactions	√	√	√	√	√	–
Standard compliance	–	–	–	–	√	–
Security	–	–	–	√	√	√
S3 support	√	√	–	–	√	–
Explainability	–	–	–	–	–	√