Maximum out-of-order tolerance is applied within a single value tuple of. When the OVER clause is used, several aspects of event processing by Azure Stream Analytics are modified: OVER clause interacts with event ordering Syntax TIMESTAMP BY scalar_expression Įvent timestamp can be retrieved in the SELECT statement in any part of the query using System.Timestamp() property. See 'OVER clause interacts with event ordering' for the impact the use of the OVER clause has on the processing of the job. Azure Stream Analytics supports substreams by specifying OVER sub-clause to enable processing of events in independent timelines. In case a query only processes data from each event producer independently, handling events from each producer in its own timeline is more efficient than managing time skews between producers. While the disorder between event producers may be large, the disorder within the events from a single producer is generally small or even non-existent.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. Archives
February 2023
Categories |