公开(公告)号：US09680692B2

公开(公告)日：2017-06-13

申请号：US13748173

申请日：2013-01-23

Applicant: Facebook, Inc.

Inventor： Phillip Liu ,  Vishal Kathuria

IPC: G06F15/16 ,  H04L12/24 ,  H04L29/08

CPC classification number: H04L41/0609 ,  H04L67/10

Abstract: Disclosed is a method and system for registering a recursive watch on a node in hierarchical data structure. Embodiments of the disclosed technique may include (i) receiving a request to register an event listener on a source node, the source node being one of a plurality of nodes that are related to each other in a hierarchy; (ii) registering the event listener on the source node, the event listener configured to notify a client of an occurrence of a first event in the source node; and (iii) if the source node has a descendant node in the hierarchy, setting the event listener to notify the client of an occurrence of a second event in the descendant node without requiring registration of another event listener on the descendant node. Each of the nodes may represent, for example, a logical partition of a storage device.