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From mike-tutkowski <>
Subject [GitHub] cloudstack pull request: Taking fast and efficient volume snapshot...
Date Mon, 11 Apr 2016 02:08:29 GMT
Github user mike-tutkowski commented on the pull request:
    @jburwell Unfortunately Google's ImmutableMap doesn't support null for a value (which
we use). I noticed this while running regression tests and googled to see if there is a way
around it. Google suggested using an unmodifiableMap, but it doesn't provide the same benefits
(we wouldn't be making a copying of the underlying data). It does allow you to provide back
to callers a read-only implementation, though.
    I could allows iterate over the passed-in list and only add to the ImmutableMap entries
that don't have null for a value. Not super elegant, but it would work.

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