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Jan 9, 2018
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Update futures.md #973

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2 changes: 1 addition & 1 deletion _overviews/core/futures.md
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Expand Up @@ -74,7 +74,7 @@ although this should only be done in rare cases.

`ExecutionContext.global` is an `ExecutionContext` backed by a [ForkJoinPool](http://docs.oracle.com/javase/tutorial/essential/concurrency/forkjoin.html).
It should be sufficient for most situations but requires some care.
A `ForkJoinPool` manages a limited amount of threads (the maximum amount of thread being referred to as *parallelism level*).
A `ForkJoinPool` manages a limited amount of threads (the maximum amount of threads being referred to as *parallelism level*).
The number of concurrently blocking computations can exceed the parallelism level
only if each blocking call is wrapped inside a `blocking` call (more on that below).
Otherwise, there is a risk that the thread pool in the global execution context is starved,
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