Invalid message received with signature XXXXX errors in Apache Tomcat and JBoss EAP

Issue

• We see the following error on JBoss EAP. What does it mean:

  ERROR [org.apache.coyote.ajp] (ajp-/127.0.0.1:8009-1) JBWEB003061: Invalid message received with signature ####
  

• In application test environment, we are not able to upload file size greater than 2 kb. We are getting below error

  Mar 12 11:28:36,752 ERROR [com.example.FileUploadServlet] (ajp-/0.0.0.0:14619-1) java.lang.ArrayIndexOutOfBoundsException
  Mar 12 11:28:36,753 ERROR [org.apache.coyote.ajp] (ajp-/0.0.0.0:14619-1) JBWEB003061: Invalid message received with signature 11565
  Mar 12 11:28:36,803 ERROR [org.jboss.remoting.remote.connection] (Remoting "hostname" read-1) JBREM000200: Remote connection failed: java.io.IOException: Connection reset by peer
  

• Unidentified logs in Apache Tomcat

  20-May-2020 18:32:37.250 SEVERE [ajp-nio-123.456.789.000-8009-exec-1] org.apache.coyote.ajp.AjpMessage.processHeader Invalid message received with signature [18688]