Github user ctubbsii commented on the pull request:
https://github.com/apache/accumulo/pull/70#issuecomment-184089574
For reference, String.intern() should not be used for Java 1.6 runtime, as
that could grow the PermGen space significantly. It could possibly replace the
WeakHashMap in 1.7, because intern storage has been moved to the main Java
heap. It might not actually be needed at all, since we've effectively
eliminated all the extra objects and copies that were left around with Text.
And, in Java 1.8 update 30, the G1 GC has a String dedupe feature which may
eliminate the extra copies without needing to intern.
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