Write horizon data management

摘要

Conditions are enforced to prevent unintended deletion of data stored by a data storage system. For example, to delete a collection of data, a condition on the collection of data's size may be enforced. The collection may be required to be empty, for example. In addition, a condition that there not exist a pending data processing operation that can affect fulfillment of the condition on the collection of data's size is also enforced.

主权项

1. A computer-implemented method comprising:
receiving a request to upload a data object to a logical data container; determining a counter associated with processing a plurality of requests to upload one or more data objects to one or more logical data containers, the plurality of requests including the request; accessing a value recorded for the logical data container, the value indicative of a potential pending request affecting the logical data container; and processing the request based at least in part on a comparison of the counter and the value, the processing comprising:
if the counter is greater than the value, updating the value to be equal to or greater than the counter and uploading the data object to the logical data container based at least in part on the updated value, andif the value is equal to or greater than the counter, uploading the data object to the logical data container without an update to the value.