title: Will an illegal reflective access operation prevent a program from running?
body: <p>I am working on a project using java and flink to build a data stream of tweets. When I run the program I receive this error:</p>
  
  <pre><code>WARNING: An illegal reflective access operation has occurred
  WARNING: Illegal reflective access by org.apache.flink.core.memory.HybridMemorySegment (file:/home/haydn/.m2/repository/org/apache/flink/flink-core/1.4.2/flink-core-1.4.2.jar) to field java.nio.Buffer.address
  WARNING: Please consider reporting this to the maintainers of org.apache.flink.core.memory.HybridMemorySegment
  WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
  WARNING: All illegal access operations will be denied in a future release
  </code></pre>
  
  <p>The program seems to run afterwards though, so I'm just wondering if this error means anything will not be working as intended, or if everything will be fine. </p>
  
  <p>I noticed other posts in which people gave suggestions on how to hide the message, which is why I assumed it wasn't critical.</p>
  
  <p>Thanks :)</p>