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From Sean Owen <>
Subject Do we need to finally update Guava?
Date Sun, 15 Dec 2019 16:08:28 GMT
See for example:

This is a dicey dependency that we have been reluctant to update as a)
Hadoop used an old version and b) Guava versions are incompatible
after a few releases.

But Hadoop is going all the way from 11 to 27 in Hadoop 3.2.1. Time to
match that? I haven't assessed how much internal change it requires.
If it's a lot, well, that makes it hard, as we need to stay compatible
with Hadoop 2 / Guava 11-14. But then that causes a problem updating
past Hadoop 3.2.0.

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