This section discusses the changes that you need to be aware of when migrating your application to Elasticsearch 6.2.
All permission bootstrap checkedit
Elasticsearch installs a security manager during bootstrap to mitigate the scope
of exploits in the JDK, in third-party dependencies, and in Elasticsearch itself
as well as to sandbox untrusted plugins. A custom security policy can be applied
and one permission that can be added to this policy is
java.security.AllPermission. However, this effectively disables the security
manager. As such, granting this permission in production mode is now forbidden
via the all permission bootstrap check.