GitHub user abbccdda opened a pull request:

    https://github.com/apache/kafka/pull/3714

    close iterator on doc example

    The iterator interface usage has some examples missing explicit close 
operation after usage. We should remind the user to do so because un-closed 
iterator will leave the underlying file descriptor open, thus eating up memory.
    @guozhangwang @Ishiihara 

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/abbccdda/kafka add_iterator_close_on_doc

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/kafka/pull/3714.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #3714
    
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commit eacff5ac24090e476211301f01801a7f4f5d88af
Author: Boyang Chen <byc...@pinterest.com>
Date:   2017-08-22T20:46:54Z

    close iterator on doc example

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