ator&lt;org.apache.pig.data.Tuple&gt;, org.apache.pig.Algebraic</pre>
<div class="block">Computes union of ItemsSketch.
 To assist Pig, this class implements both the <i>Accumulator</i> and <i>Algebraic</i> interfaces.</div>
</li>
</ul>
</div>
<div class="summary">
<ul class="blockList">
<li class="blockList">
<!-- ======== NESTED CLASS SUMMARY ======== -->
<ul class="blockList">
<li class="blockList"><a name="nested.class.summary">
<!--   -->
</a>
<h3>Nested Class Summary</h3>
<table class="memberSummary" 