Batch Size and Wait Time
For origin stages, the batch size determines the maximum number of records sent through the pipeline at one time. The batch wait time determines the time that the origin waits for data before sending a batch. At the end of the wait time, it sends the batch regardless of how many records the batch contains.
For example, a File Tail origin is configured for a batch size of 20 records and a batch wait time of 240 seconds. When data arrives quickly, File Tail fills a batch with 20 records and sends it through the pipeline immediately, creating a new batch and sending it again as soon as it is full. As incoming data slows, a remaining batch contains a few records, gaining an extra record periodically. 240 seconds after creating the batch, File Tail sends the partially-full batch through the pipeline. It immediately creates a new batch and starts a new countdown.
Configure the batch wait time based on your processing needs. You might reduce the batch wait time to ensure all data is processed within a specified time frame or to make regular contact with pipeline destinations. Use the default or increase the wait time if you prefer not to process partial or empty batches.