In June, Databricks open-sourced all the Delta Late APIs as part of the new Delta Lake 2.0 release. This put a definitive end to criticism from its competitors like Cloudera, Dremio, Google (Big Lake), Microsoft, Oracle, SAP, AWS Snowflake, HPE (Ezmeral) and Vertica, who had doubted whether Delta Lake was open source or proprietary.
“The new announcement should provide continuity and clarity for users and help counter confusion (stoked in part by competitors) about whether Delta Lake is proprietary or open source,” said Matt Aslett, research director at Ventana Research.
This is not the first time there has been an ambiguity regarding the open-source nature of a tool. The best example is Microsoft’s VS Code.
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