title: How to specify system property in hadoop except modify hadoop-env.sh?
body: <p>I'd like to set system property (not hadoop property) when running hadoop jobs. I found that it's not easy to setting system property.  Even I set the property in shell</p>
  
  <pre><code>export HADOOP_OPTS="$HADOOP_OPTS:-Dproperty=value"
  </code></pre>
  
  <p>It's still not working. The "-D" option of hadoop command line is only for Configuration, not system property. So the "-D" option also not working</p>
  
  <p>Anyone has ideas ? thanks</p>