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Mastering Mesos by Akhil Das, Dipa Dubhashi

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Reservation

Mesos also provides the ability to reserve resources on specified slaves. This is particularly useful in ensuring that important services get guaranteed resource offers from a particular slave (for example, a database may need resource offers only from a particular slave, which contains the necessary data). In the absence of a reservation mechanism, there is the possibility that an important service or job may need to wait for a long time before it gets a resource offer satisfying its filter criteria, which would have a detrimental impact on performance.

On the other hand, misusing the reservation feature can lead to the same kind of problems, such as the resource underutilization that Mesos sought to resolve in the first place. Thus, ...

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