Which type of search allows for stateful operations in Splunk?

In Splunk, the type of search that allows for stateful operations is the one categorized as streaming. Streaming searches operate on event-level data in real-time or near real-time, which allows the search to continuously process incoming events as they arrive. This characteristic enables the execution of operations that depend on maintaining the state across a sequence of events, such as calculating running totals, averages, or performing time series analyses.

Streaming searches do not require the completion of all events before providing results, thereby making them capable of processing data in a more dynamic manner. This is particularly beneficial in situations where real-time analysis or alerting is necessary, as it allows organizations to react immediately to changing conditions based on the data flowing through the system.

Transforming and generating searches, while powerful in their own right, do not inherently support the same level of stateful operation. Transforming searches focus on manipulating results into a different form, typically requiring a complete set of data before returning results, whereas generating searches tend to create new events or series that do not depend on the immediacy of incoming data. Non-streaming searches also do not provide the necessary stateful processing capabilities that streaming searches afford.