Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/1813#discussion_r16065213
--- Diff: core/src/main/java/com/google/common/base/Optional.java ---
@@ -0,0 +1,243 @@
+/*
+ * Copyright (C) 2011 The Guava Authors
--- End diff --
BTW if we're comfortable with not locking this file to the 14.0.1 version
(or remembering to do this when we change guava versions), I can remove this
fork (and clean up some code elsewhere in this patch too).
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