Patent ID: 11947499
Assignee: EMC IP HOLDING COMPANY LLC
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 18:
19. A system, comprising:
a plurality of federation member nodes comprising a first federation member node and a second federation member node,
wherein the first federation member node comprises a computer processor configured to:
detect a discrepancy between a slave metadata collection maintained on the first federation member node and a master metadata collection maintained on the second federation member node;
compute, in response to detecting the discrepancy, a local metadata namespace root delta comprising a hash difference between first and second aggregated cryptographic hashes;
map a set of commits applied to the master metadata collection to the local metadata namespace root delta based on the first and second aggregated cryptographic hashes, wherein the set of commits are searchable using the local metadata namespace root delta based on the mapping;
transmit, to the second federation member node, a namespace update request comprising the local metadata namespace root delta and the set of commits;
receive, from the second federation member node and in response to the namespace update request, the set of commits applied to the master metadata collection,
wherein the set of commits represents the discrepancy between the slave and master metadata collections; and

apply, to correct the discrepancy, the set of commits to the slave metadata collection, and wherein the set of commits remains searchable using the local metadata namespace root delta after applying.