NIFIREG-323 Clear secret key when auto restarting in order to obtain new secret key from the NiFi Registry process
diff --git a/nifi-registry-core/nifi-registry-bootstrap/src/main/java/org/apache/nifi/registry/bootstrap/RunNiFiRegistry.java b/nifi-registry-core/nifi-registry-bootstrap/src/main/java/org/apache/nifi/registry/bootstrap/RunNiFiRegistry.java
index e7a46b7..af11fa4 100644
--- a/nifi-registry-core/nifi-registry-bootstrap/src/main/java/org/apache/nifi/registry/bootstrap/RunNiFiRegistry.java
+++ b/nifi-registry-core/nifi-registry-bootstrap/src/main/java/org/apache/nifi/registry/bootstrap/RunNiFiRegistry.java
@@ -1055,6 +1055,7 @@
                     }
 
                     defaultLogger.warn("Apache NiFi Registry appears to have died. Restarting...");
+                    secretKey = null;
                     process = builder.start();
                     handleLogging(process);