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POjava.lang.IncompatibleClassChangeError appears in a specific case
 

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    <p>I'm trying to deploy a Java Play! 2 application. My Bamboo server is running <code>play clean dist</code> which make a zip file that contains the deployed application. Bamboo then unzip the file, and change a symbolic (named current) link to this new folder.</p> <p>Then, manually (right now) I want to run the <code>start</code> script but an <code>java.lang.IncompatibleClassChangeError</code> exception is thrown:</p> <pre><code>root # pwd /home/webserver/current/ root # ./start Play server process ID is 9795 [info] play - datasource [jdbc:mysql://XXX/XXX] bound to JNDI as DefaultDS [debug] c.j.b.BoneCPDataSource - JDBC URL = jdbc:mysql://XXX/XXX, Username = lmc, artitions = 3, max (per partition) = 5, min (per partition) = 2, helper threads = 3, idle max ge = 10 min, idle test period = 5 min [info] play - database [default] connected at jdbc:mysql://XXX/XXX Oops, cannot start the server. java.lang.IncompatibleClassChangeError: Implementing class at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:634) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) at java.net.URLClassLoader.defineClass(URLClassLoader.java:277) at java.net.URLClassLoader.access$000(URLClassLoader.java:73) at java.net.URLClassLoader$1.run(URLClassLoader.java:212) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:205) at java.lang.ClassLoader.loadClass(ClassLoader.java:321) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294) at java.lang.ClassLoader.loadClass(ClassLoader.java:266) at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:905) at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:890) at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:57) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:52) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:34) at play.db.jpa.JPAPlugin.onStart(JPAPlugin.java:35) at play.api.Play$$anonfun$start$1.apply(Play.scala:60) at play.api.Play$$anonfun$start$1.apply(Play.scala:60) at scala.collection.LinearSeqOptimized$class.foreach(LinearSeqOptimized.scala:59) at scala.collection.immutable.List.foreach(List.scala:45) at play.api.Play$.start(Play.scala:60) at play.core.StaticApplication.&lt;init&gt;(ApplicationProvider.scala:51) at play.core.server.NettyServer$.createServer(NettyServer.scala:133) at play.core.server.NettyServer$$anonfun$main$5.apply(NettyServer.scala:162) at play.core.server.NettyServer$$anonfun$main$5.apply(NettyServer.scala:161) at scala.Option.map(Option.scala:133) at play.core.server.NettyServer$.main(NettyServer.scala:161) at play.core.server.NettyServer.main(NettyServer.scala) </code></pre> <p>I've read a lot of posts about this error but nothing can solve my problem right now. I've tried to copy the folder to another place, just like that:</p> <pre><code>root # cp -r /home/webserver/current /root/webserver-current root # cd /root/webserver-current root # ./start </code></pre> <p>And here, instead of the exception, my application is working! :-O My conclusion is that it doesn't works on the <code>/home</code> partition, but I can't believe it that! Do you have any idea or any solution to make it working??</p> <p>Regards, Samuel.</p>
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