SEMANTIC LAYERS IN APACHE SUPERSET: SIP-182 AND APACHE OSSIE

Summary from the TLDR Data newsletter

Apache Superset is adding first-class semantic layer support, replacing pseudo-databases for metrics and dimensions. A new SemanticLayer/Explorable interface converts chart requests into SemanticQuery objects and returns Arrow tables, targeted for Superset 7.0. Apache Ossie is also being built as a vendor-neutral JSON/YAML interchange layer.