============= Release 0.269

Details

General Changes

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• Add :func:!uuid to return a unique identifier.

Presto on Spark Changes

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• Add configuration property spark.memory-revoking-target and session property spark_memory_revoking_target to specify the occupancy percent of memory pool after revoke is completed.

Accumulo Connector Changes

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• Replace :func:!uuid from being connector specific to a standard function. In the process the return type has been changed from VARCHAR to UUID and existing use cases might need to perform a cast - CAST(UUID() AS VARCHAR).

Delta Lake Connector Changes

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• Add :doc:/connector/deltalake for reading Delta Lake tables (https://delta.io/) natively in Presto.

Iceberg Connector Changes

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• Add Iceberg table predicate pushdown to reduce the number of files scanned.

Credits

Ajay George, Andrii Rosa, Arjun Gupta, Arunachalam Thirupathi, Basil Crow, Beinan Wang, Costin V Cozianu, James Sun, Pranjal Shankhdhar, Sagar Sumit, Swapnil Tailor, Timothy Meehan, Venki Korukanti, Xiang Fu, Ying Su, Zhenxiao Luo, ericyuliu, sambekar15, singcha, v-jizhang