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<h1>Overview</h1>
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The Common Documentation describes the common utilities and libraries that support the other Hadoop subprojects.
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If you have more questions about Hadoop, you can ask on the <a href="https://hadoop.apache.org/core/mailing_lists.html">Mailing Lists</a> or browse the <a href="http://mail-archives.apache.org/mod_mbox/hadoop-core-commits/">Mailing List Archives</a>.
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