Enlisting in a Transaction (cont’d)

• When an application A in a transaction T first calls an application B at another node, B must tell its local TM that the transaction has arrived.

Transaction

Manager

Communications

Manager

Application A

2. AddBranch(N, T)

1. Call(AP-B, T)

Transaction

Manager

Communications

Manager

Application B

4. StartBranch(N, T)

5. Call(AP-B, T)

3. Send Call(AP-B, T)

Node M

Node N

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