A distributed deadlock occurs when two or more processes in a distributed system are unable to proceed because each is waiting for resources held by another, creating a cycle of dependencies across different nodes. Detecting such deadlocks is challenging because the system lacks a centralized authority to monitor resource allocation and process states, making it difficult to obtain a global view of the resource usage. Additionally, the asynchronous nature of distributed systems means that processes may have incomplete or outdated information about the states of other processes, complicating detection algorithms.
the coordinator conculde incorrectly that a deadlock exist and kills some process --------------------------- Detecting a non existent deadlock in distributed system has been referred as false deadlock and it may occur due to communication delay.. ---->Ashok Paranjothi
There are four strategies of dealing with deadlock problem:1. The Ostrich ApproachJust ignore the deadlock problem altogether.2. Deadlock Detection and RecoveryDetect deadlock and, when it occurs, take steps to recover.3. Deadlock AvoidanceAvoid deadlock by careful resource scheduling.4. Deadlock PreventionPrevent deadlock by resource scheduling so as to negate at least one of the four conditions.
In distributed deadlock detection, the delay in propagating local information might cause the deadlock detection algorithms to identify deadlocks that do not really exist. Such situations are called phantom deadlocks and they lead to unnecessary aborts.
The difference is exactly what you have just stated: deadlock prevention is used to stop deadlocks before they happen (to prevent them), while deadlock detection is used to figure out when a process has deadlocked (to detect it).
The word that means hard to detect or describe is elusive.
The antonym for deadlock is agreement.
the paticle that was hard to detect was neutrons because it had no electrical charge.
Holy Deadlock was created in 1934.
Deadlock - film - was created in 1931.
Wedlock Deadlock was created in 1947.
House of Dreams - 2004 To Deadlock or Not to Deadlock 1-3 was released on: USA: 22 January 2004
the paticle that was hard to detect was neutrons because it had no electrical charge.