title: Does Cassandra support Java 10?
body: <p>We're planning on migrating our environment from Java 8 to OpenJDK 10. Doing this on my local machine, I've found that Cassandra will no longer start for me, giving the following error :</p>
  
  <p><a href="https://i.stack.imgur.com/2n87Z.png" rel="noreferrer"><img src="https://i.stack.imgur.com/2n87Z.png" alt="enter image description here"></a></p>
  
  <p>I can't find any solid information online that says it is definitely not supported.</p>
  
  <p><a href="https://stackoverflow.com/questions/50362215/cassandra-does-not-start-on-java-10">This post</a> from 4 months ago suggests that they do not support Java 10, but doesn't say it is confirmed, and is more inferred. There is also a comment on it from another user saying they have managed to get it running on Java 11.</p>
  
  <p>The final comment on <a href="https://datastax-oss.atlassian.net/browse/JAVA-1795" rel="noreferrer">this ticket</a> on datastax says "We've updated our CI matrix to include Java 10 and everything works except for the aforementioned OSGi testing issues." I'm not sure what to take away from that, but it seems to imply that it is working with Java 10 now, as the ticket is marked as resolved.</p>
  
  <p><a href="https://issues.apache.org/jira/browse/CASSANDRA-9608" rel="noreferrer">This ticket</a>, they discuss support for Java 11. There are a few comments discussing the need to even support Java 10, but they don't really give a definitive answer on whether they will or not.</p>
  
  <p>Finally <a href="http://thelastpickle.com/blog/2018/08/16/java11.html" rel="noreferrer">this blog</a> discusses a way to get Java 11 working with cassandra. However I notice this is using Cassandra 4.0. Has this officially been released? I notice on their <a href="http://cassandra.apache.org/download/" rel="noreferrer">website</a> they say the release date is tbd and says the current stable release is 3.11.3, and there is no mention of it on their <a href="https://docs.datastax.com/en/landing_page/doc/landing_page/compatibility.html" rel="noreferrer">compatibility page</a>. </p>
  
  <p>I currently installed Cassandra on windows via Datastax, but I have also tried cloning the current git repository and running it from there, but I get the same error message (although on their github they do seem to say it has only been tested with Java 8). </p>
  
  <p>Do they simply not support 10 then? Also if anyone knows if they plan to release 4.0 soon, and if that will definitely support 11 (and I assume 10 ?), that would be a massive help.</p>