Cluster expansion method and apparatus, electronic device and storage medium

A cluster expansion apparatus comprising:

• a memory;
• and
• a processor comprising:
• an acquiring unit configured to acquire data of machines to be expanded, the data of the machines to be expanded comprising one or more of the following:
• a number of the machines to be expanded, performance parameters of the machines to be expanded, and a fragment amount of the machines to be expanded, the acquiring unit further configured to acquire:
• a number of machines in a cluster, and a total data amount of current fragments in the cluster and the fragment amount of the current fragments when it is determined that the number of the machines to be expanded is not a multiple of the number of the machines in the cluster, wherein the total amount of current fragments in the cluster comprises a portion of the data of the machines to be expanded;
• a configuration unit configured to migrate some data amount of each fragment in the current fragments to the machines to be expanded, according to the total data amount of the current fragments in the cluster, the fragment amount of the current fragments and the fragment amount of the machines to be expanded, the configuration unit further configured to configure the machines to be expanded to be in the cluster, according to a storage data amount of each time period in the duster and the performance parameters of the machines to be expanded, when it is determined that the number of the machines to be expanded is a multiple of the number of the machines in the cluster;
• wherein migrating some data amount of each fragment in the current fragments to the machines to be expanded, according to the total data amount of the current fragments in the cluster, the fragment amount of the current fragments, and the fragment amount of the machines to be expanded, comprises:
• determining a data amount to be migrated of each fragment in the current fragments according to the total data amount of the current fragments, the fragment amount of the current fragments and the fragment amount of the machines to be expanded;
• determining a data block to be migrated of each fragment in the current fragments, according to the data amount to be migrated of each fragment in the current fragments;
• acquiring an address interval of the data block to be migrated of each fragment in the current fragments, according to the data block to be migrated of each fragment in the current fragments;
• and
• configuring each fragment in fragments of the machines to be expanded, according to the data block to be migrated of each fragment in the current fragments and the address interval of the data block to be migrated of each fragment in the current fragments.

An electronic device comprising:

• a memory configured to store at least one instruction therein;
• and
• a processor configured to perform the at least one instruction to implement:
• acquiring data of machines to be expanded, the data of the machines to be expanded comprising one or more of the following:
• a number of machines to be expanded, performance parameters of the machines to be expanded, and a fragment amount of machines to be expanded;
• acquiring a number of machines in a cluster;
• when it is determined that the number of the machines to be expanded is not a multiple of the number of the machines in the cluster, acquiring a total data amount of current fragments in the cluster and a fragment, amount of the current fragments, wherein the total data amount of current fragments in the cluster comprises a portion of the data of the machines to be expanded;
• migrating some data amount of each fragment in the current fragments to the machines to be expanded, according to the total data amount of the current fragments in the cluster, the fragment amount of the current fragments and the fragment amount of the machines to be expanded;
• and
• when it is determined that the number of the machines to be expanded is a multiple of the number of the machines in the cluster, configuring the machines to be expanded to be in the cluster, according to the performance parameters of the machines to be expanded
• wherein migrating some data amount of each fragment in the current fragments to the machines to be expanded, according to the total data amount of the current fragments in the cluster, the fragment amount of the current fragments, and the fragment amount of the machines to be expanded, comprises:
• determining a data amount to be migrated of each fragment in the current fragments according to the total data amount of the current fragments, the fragment amount of the current fragments and the fragment amount of the machines to be expanded;
• determining a data block to be migrated of each fragment in the current fragments, according to the data amount to be migrated of each fragment in the current fragments;
• acquiring an address interval of the data block to be migrated of each fragment in the current fragments, according to the data block to be migrated of each fragment in the current fragments;
• and
• configuring each fragment in fragments of the machines to be expanded, according to the data block to be migrated of each fragment in the current fragments and the address interval of the data block to be migrated of each fragment in the current fragments.