Locality-aware token management for a distributed file system

A computer program product comprising a computer readable storage medium having a computer readable program stored therein, wherein the computer readable program, when executed in a data processing system, causes the data processing system to:

• receive, at a first local token manager, a request for a token to access a computing resource from a local node associated with the first local token manager;
• determine, at the first local token manager, if the token is present in a local token cache of the first local token manager;
• grant, in response to the token being present in the local token cache, by the first local token manager, the token to the local node;
• request, in response to the token not being present in the local token cache, the token from a global token manager;
• and
• cache, in response to receiving the token from the global token manager, the token in the local token cache of the first local token manager and granting the token to the local node.

An apparatus comprising:

• at least one processor;
• and
• at least one memory coupled to the at least one processor, wherein the at least one memory comprises instructions which, when executed by the at least one processor, cause the at least one processor to:
• receive, at a first local token manager, a request for a token to access a computing resource from a local node associated with the first local token manager;
• determine, at the first local token manager, if the token is present in a local token cache of the first local token manager;
• grant, in response to the token being present in the local token cache, by the first local token manager, the token to the local node;
• request, in response to the token not being present in the local token cache, the token from a global token manager;
• and
• cache, in response to receiving the token from the global token manager, the token in the local token cache of the first local token manager and granting the token to the local node.