The ..... may arise when a process rolls back to its checkpoint after a failure and requests all the other affected processes also to roll back

CLOUD COMPUTING

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

The ____ may arise when a process rolls back to its checkpoint after a failure and requests all the other affected processes also to roll back

A	Rollback
B	Phantom Effect
C	Domino Effect
D	Livelock problem

Explanation:

Detailed explanation-1: -The Livelock problem may arise when a process rolls back to its checkpoint after a failure and requests all the other affected processes also to roll back. In such a situation if the roll back mechanism has no synchronization, it may lead to the livelock problem as described below [1].

Detailed explanation-2: -Checkpoint based rollback recovery techniques can be classified into three categories: uncoordinated checkpointing, coordinated checkpointing and communication induced check pointing. Uncoordinated checkpointing allows each process the maximum autonomy in deciding when to take checkpoints.

Detailed explanation-3: -Disadvantages a) Multiple processes may force independent checkpoints for the same Z-formation. b) Checkpoints may be forced for Z-formations that never emerge. 1.

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SOFTWARE ENGINEERING

EMERGING TRENDS IN SOFTWARE ENGINEERING

CLOUD COMPUTING