2 submission and 3-paragraph submission analysis

2-Paragraph Submission

Note left of Coordinator: Voting phaseCoordinator->Cohort1: queryCoordinator->Cohort2: queryCohort1-->Coordinator: yes/noNote right of Cohort1: prepare/abortCohort2-->Coordinator: yes/noNote right of Cohort2: prepare/abortNote left of Coordinator: Commit phaseCoordinator->Cohort1: commit/rollbackCoordinator->Cohort2: commit/rollbackCohort1-->Coordinator: acknowledgmentNote right of Cohort1: commit/abortCohort2-->Coordinator: acknowledgmentNote right of Cohort2: commit/abort

Submit Request Phase

1. The collaborator sends the submission request to each performer;
2. The performer receives the commit request, starts the execution of the transaction, and the two sides record the rollback and retry log;
3. The performer executes the transaction, notifies the collaborator whether the commit can be executed, suspends the resource waiting for the collaborator's notification;

Submission Phase

1. The collaborator receives all the performers ' notifications to decide whether to initiate the submission or roll back the request;
2. Each performer completes the instructions of the collaborator to release the resources;
3. The collaborator waits for all the performers to complete the transaction after the ACK;

3-Paragraph Submission

2 submission and 3-paragraph submission analysis