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Answer: Set a state retention policy, use checkpointing to ensure fault tolerance, and optimize the state store by using `mapGroupsWithState`.
Setting a state retention policy and using checkpointing helps in managing the state store size and ensuring fault tolerance. The `mapGroupsWithState` function is used to manage stateful operations efficiently.
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In a scenario where you need to explore and tune state information using stream-static joins and Delta Lake, describe the steps you would take to optimize the state store. Include considerations for state retention, checkpointing, and the use of mapGroupsWithState.
A
Use mapGroupsWithState without setting a state retention policy and avoid checkpointing.
B
Set a state retention policy, use checkpointing to ensure fault tolerance, and optimize the state store by using mapGroupsWithState.
C
Ignore state retention and checkpointing, and directly perform stream-static joins.
D
Use a batch query to avoid dealing with state information.