Github user HeartSaVioR commented on the issue:
https://github.com/apache/storm/pull/1783
One thing to consider is that Caffeine seems to require Java 8, which means
that this patch can't be shipped to 1.x version line. Do we want to keep using
Guava for 1.x branch?
@ben-manes Is there any versions for Caffeine which works with Java 7?
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