Github user denine99 commented on the pull request:
https://github.com/apache/accumulo/pull/33#issuecomment-96812649
Okay, I took John and Josh's comments into account and pointed out the
caching case and the modifying case. Modifying the Key/Value and having it
affect the source iterator seems like a rarer issue, but it is possible with
user-created iterators.
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