Answer-first summary for fast verification
Answer: Checkpointing, Write Ahead Logs and Idempotent Sinks
Structured Streaming ensures end-to-end, exactly-once semantics through a combination of checkpointing, write-ahead logs, and idempotent sinks. Checkpointing and write-ahead logs record the offset range of data processed during each trigger interval, while idempotent sinks prevent duplicate writes of the same data. Together, these mechanisms guarantee that data is processed exactly once, even in the event of failures.
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How does Structured Streaming ensure end-to-end, exactly-once semantics under any failure condition?
A
Write Ahead Logging and Water Marking
B
Idempotent Sinks and Water Marking
C
Checkpointing and Write Ahead Logging
D
Write Ahead Logging and Idempotent Sinks
E
Checkpointing, Write Ahead Logs and Idempotent Sinks
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