Patent ID: 8688635

Claim:
A computer program product for maintaining a connection to a data set, the computer program product comprising a non-transitory computer readable storage medium having computer readable program code embodied therein that executes to perform operations, the operations comprising: processing a request to open a connection to a data set having members, wherein the connection is used to perform read and write requests to the members in the data set; in response to establishing the connection, establishing for the connection: a primary data set having all the members; a secondary data set to which updated members in the primary data set are written; and a pending delete data set to store pending delete members comprising members that are updated; migrating unmodified members not subject to a read or write operation from the primary data set to the secondary data set; determining a ratio of updated members to unmodified members; and increasing a rate at which the unmodified members not subject to a read or write operation are migrated from the primary data set to the secondary data set in response to determining an increase in the ratio of updated members to unmodified members.