Big Data Systems HPI

Quiz 2 - Cloud Computing & Distributed File Systems


Question

Assume a cluster with 1000 machines. There are 300 machines of type X, 200 of type Y, and 500 of type Z. The probability of a machine to fail during the execution of a certain job is 0.0005 for X, 0.001 for Y and 0.00001 for Z. If a machine fails, the job fails.

*Given that each machine runs a single job, compute the probability that the job will fail during execution. Give the number with 4 digit precision as answer and use '.' as fraction separator -> "0.1234". *


Answer

0.2989

1-((1-p)^n * ... )




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