title: NoSuchMethodError: org.apache.htrace.core.Tracer$Builder
body: <p>I am trying to run a MapReduce program in Eclipse and am repeatedly getting an error saying:</p>
  
  <pre><code>Exception in thread "main" java.lang.NoSuchMethodError: org.apache.htrace.core.Tracer$Builder.&lt;init&gt;(Ljava/lang/String;)V
  </code></pre>
  
  <p>I downloaded the .jar files from here:<br>
  <a href="http://mvnrepository.com/artifact/org.apache.htrace/htrace-hbase/3.1.0-incubating" rel="nofollow noreferrer">http://mvnrepository.com/artifact/org.apache.htrace/htrace-hbase/3.1.0-incubating</a>
  <a href="http://mvnrepository.com/artifact/org.apache.htrace/htrace-hbase/4.1.0-incubating" rel="nofollow noreferrer">http://mvnrepository.com/artifact/org.apache.htrace/htrace-hbase/4.1.0-incubating</a><br>
  And put them in my project folder, under a 'lib' directory, before manually adding them to the Eclipse project reference library using the menu options 'Build Path > Configure Build Path'. Yet the error persists.</p>
  
  <p>Any idea how to fix it? I am brand new to Java and so would be really grateful for any insights that will get my program to run. Thanks!</p>
  
  <p><a href="https://i.stack.imgur.com/QLulY.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/QLulY.png" alt="enter image description here"></a></p>