| 摘要 |
<P>PROBLEM TO BE SOLVED: To secure high availability of a decentralized data store system. <P>SOLUTION: A plurality of slave servers classify each of a plurality of partial tables that the slave servers manage into one of a plurality of groups, and associate the plurality of groups with a plurality of division WAL logs storing update information to partial tables belonging to the plurality of groups respectively. Once detecting a failure occurring to one of the plurality of slave servers, a master server selects a plurality of division WAL logs of the slave server to which the failure occurs, and selects a slave server for recovery out of the slave servers other than the slave server to which the failure occurs. Each of the plurality of slave servers reads in a selected division WAL log when selected as the slave server for recovery to start managing a partial table belonging to a group corresponding to the selected division WAL log. <P>COPYRIGHT: (C)2013,JPO&INPIT |
