STREAMING EVENT DATA TO DIFFERENT CONSUMER INSTANCES OF ONE EVENT CONSUMER DURING FAILURE OF A CONSUMER INSTANCE'S ABILITY TO PROCESS THE EVENT DATA

Some embodiments provide a novel method for providing data regarding events that is stored in a data store to a set of consumers. An event server provides, to a first instance of a particular consumer that includes several instances, a stream of data regarding a first event that is stored in a set of one or more partitions of the data store assigned to the first instance. The event server receives, from the first instance, notification that the first instance failed to process the stream of data. The event server unassigns the set of partitions to the first instance. The event server assigns the set of partitions to a second instance of the particular consumer. The event server provides, to the second instance, the stream of data regarding the first event.