Establishing and maintaining data apportioning for availability domain fault tolerance

A computer readable medium, embodied in a non-transitory computer readable medium, the non-transitory computer readable medium having stored thereon a sequence of instructions which, when stored in memory and executed by one or more processors causes the one or more processors to perform a set of acts for selecting a replication configuration to manage metadata data in a computing system having a plurality of nodes that span two or more availability domains, the acts comprising:

• accessing a plurality of node topology attributes describing the nodes, wherein the node topology attributes comprise a mapping between nodes and the availability domains;
• collecting resource usage measurements corresponding to the plurality of nodes that span two or more availability domains;
• generating a plurality of candidate replication configurations, the plurality of candidate replication configurations having respective configuration scores;
• computing a plurality of resource usage balance scores corresponding to respective ones of the plurality of candidate replication configurations;
• and
• selecting a replication configuration from the candidate replication configurations based at least in part on the resource usage balance scores.

A system for selecting a replication configuration to manage metadata data in a computing system having a plurality of nodes that span two or more availability domains, the system comprising:

• a storage medium having stored thereon a sequence of instructions;
• and
• one or more processors that execute the instructions to cause the one or more processors to perform a set of acts, the acts comprising,
• accessing a plurality of node topology attributes describing the nodes, wherein the node topology attributes comprise a mapping between nodes and the availability domains;
• collecting resource usage measurements corresponding to the plurality of nodes that span two or more availability domains;
• generating a plurality of candidate replication configurations, the plurality of candidate replication configurations having respective configuration scores;
• computing a plurality of resource usage balance scores corresponding to respective ones of the plurality of candidate replication configurations;
• and
• selecting a replication configuration from the candidate replication configurations based at least in part on the resource usage balance scores.