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Explain how Delta Lake’s Optimistic Concurrency Control (OCC) manages the potential for conflicts when multiple transactions are modifying the same data. Discuss the implications of these conflicts on system performance and data integrity.
A
OCC in Delta Lake prevents all conflicts by locking the data, ensuring high performance but potentially limiting concurrency.
B
Delta Lake’s OCC allows multiple transactions to proceed optimistically, detecting conflicts only during the commit phase. This approach enhances concurrency but may require transaction retries.
C
OCC in Delta Lake is not used for managing conflicts; conflicts are resolved by the cloud storage layer.
D
Delta Lake does not use OCC; it relies on strict locking mechanisms that prevent all conflicts but reduce system performance.
