<code><span class="memberNameLink"><a href="#isDirty()">isDirty</a></span>()</code></th>
<td class="colLast">
<div class="block"><code>true</code> if the in-memory or evicted matrix may be different from
 the matrix located at <a href="#_hdfsFileName"><code>_hdfsFileName</code></a>; <code>false</code> if the two
 matrices are supposed to be the same.</div>
</td>
</tr>
<tr id="i48" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberName