 href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;file)</pre>
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<h4>isDirty</h4>
<pre class="methodSignature">public&nbsp;boolean&nbsp;isDirty()</pre>
<div class="block"><code>true</code> if the in-memory or evicted matrix may be different from
 the matrix located at <a href="#_hdfsFil