Information processing system, information processing method, and non-transitory computer readable medium

A non-transitory computer readable medium storing a program causing a computer to execute a process, the computer being configured to manage a plurality of second information processing apparatuses to be paired with a first information processing apparatus retaining data, the plurality of second information processing apparatuses retaining data synchronized with the data retained by the first information processing apparatus, the process comprising:

• in response to a request for pair re-formation from the first information processing apparatus that has ceased to be paired with one of the plurality of second information processing apparatuses, requesting that each of the plurality of second information processing apparatuses perform confirmation of existence of the first information processing apparatus paired with the second information processing apparatus;
• receiving a result of the confirmation of existence returned by each of the plurality of second information processing apparatuses in response to the request for the confirmation of existence;
• and
• if the first information processing apparatus that made the request for pair re-formation is referred to as a requester and the second information processing apparatus that was paired with the requester is referred to as an immediately preceding pairing partner, referencing the received results of the confirmation of existence and identifying, as the immediately preceding pairing partner, the second information processing apparatus that has failed to confirm existence of the first information processing apparatus paired with the second information apparatus.

An information processing method for causing a computer to execute a process, the computer being configured to manage a plurality of second information processing apparatuses to be paired with a first information processing apparatus retaining data, the plurality of second information processing apparatuses retaining data synchronized with the data retained by the first information processing apparatus, the process comprising:

• in response to a request for pair re-formation from the first information processing apparatus that has ceased to be paired with one of the plurality of second information processing apparatuses, requesting that each of the plurality of second information processing apparatuses perform confirmation of existence of the first information processing apparatus paired with the second information processing apparatus;
• receiving a result of the confirmation of existence returned by each of the plurality of second information processing apparatuses in response to the request for the confirmation of existence;
• and
• if the first information processing apparatus that made the request for pair re-formation is referred to as a requester and the second information processing apparatus that was paired with the requester is referred to as an immediately preceding pairing partner, referencing the received results of the confirmation of existence and identifying, as the immediately preceding pairing partner, the second information processing apparatus that has failed to confirm existence of the first information processing apparatus paired with the second information apparatus.