Hello Minh, This is a result of running NiFi 1.x on a newer version of Java, which has begun adding warnings of this nature about using reflection. Since the warning points to spring-core-5.3.29.jar, there is nothing to be done in NiFi 1.x to change this. It should not affect the execution of NiFi at all. If you firmly believe this is affecting you, then drop back to using Java 11.
Regards, -- Mike On Wed, Apr 2, 2025 at 6:55 AM <e-soci...@gmx.fr> wrote: > > Hello all, > > do you know thoses messages from bootstrap log ? > > nifi-bootstrap_2025-03-31.log.gz:2025-03-31 08:28:34,770 ERROR [NiFi > logging handler] org.apache.nifi.StdErr Log configuration loaded from > default internal file. > nifi-bootstrap_2025-03-31.log.gz:2025-03-31 08:31:18,426 ERROR [NiFi > logging handler] org.apache.nifi.StdErr WARNING: An illegal reflective > access operation has occurred > nifi-bootstrap_2025-03-31.log.gz:2025-03-31 08:31:18,426 ERROR [NiFi > logging handler] org.apache.nifi.StdErr WARNING: Illegal reflective access > by org.springframework.cglib.core.ReflectUtils > (file:/appl/nifi/nifi-current/work/nar/framework/nifi-framework-nar-1.23.2.nar-unpacked/NAR-INF/bundled-dependencies/spring-core-5.3.29.jar) > to method > java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain) > nifi-bootstrap_2025-03-31.log.gz:2025-03-31 08:31:18,426 ERROR [NiFi > logging handler] org.apache.nifi.StdErr WARNING: Please consider reporting > this to the maintainers of org.springframework.cglib.core.ReflectUtils > nifi-bootstrap_2025-03-31.log.gz:2025-03-31 08:31:18,426 ERROR [NiFi > logging handler] org.apache.nifi.StdErr WARNING: Use --illegal-access=warn > to enable warnings of further illegal reflective access operations > nifi-bootstrap_2025-03-31.log.gz:2025-03-31 08:31:18,426 ERROR [NiFi > logging handler] org.apache.nifi.StdErr WARNING: All illegal access > operations will be denied in a future release > > It seems to hung the nifi instance > > Thanks for help > > Minh >
