Data recovery method, medium, and electronic device

A data recovery method, comprising:

• when current checkpoint data is successfully stored in a persistent memory, sending a notification message representing that a corresponding computing node successfully stores the current checkpoint data in the persistent memory;
• receiving a checkpoint identifier corresponding to a current checkpoint, wherein the checkpoint identifier is generated when determining that all computing nodes in a distributed graph computing system successfully store the current checkpoint data in respective persistent memories;
• and
• associating the checkpoint identifier with the current checkpoint data stored in the persistent memory, wherein associated current checkpoint data is used for data recovery during recovery execution before a checkpoint identifier corresponding to a next checkpoint is obtained.

A data recovery method, comprising:

• when successfully storing current checkpoint data in a persistent memory, sending, by a slave computing node to a master computing node, a notification message representing that a corresponding computing node successfully stores the current checkpoint data in the persistent memory;
• when determining that all computing nodes in a distributed graph computing system successfully store the current checkpoint data in respective persistent memories, generating, by the master computing node, a checkpoint identifier corresponding to a current checkpoint;
• sending, by the master computing node, the checkpoint identifier to the slave computing node;
• and
• associating, by the slave computing node, the checkpoint identifier with the current checkpoint data stored in the persistent memory, wherein associated current checkpoint data is used for data recovery during recovery execution before a corresponding slave computing node obtains a checkpoint identifier corresponding to a next checkpoint.