Hi @ckumar - thanks for the reply.   I think that screenshot lacked info may be due to my permission issue.   Same issue has been posted by team mate here - https://community.cloudera.com/t5/Support-Questions/NiFi-Node-showing-2-nodes-and-not-respecting-node-down-fault/td-p/334221   Please take a look at the screenshot attachment there which has more info.   And i can login from all 3 nodes ui, and in all nodes it shows up only 1 & 2. ... View more

Below is the app log -    2021-11-18 16:07:13,819 ERROR [main] org.apache.nifi.NiFi Failure to launch NiFi due to java.util.ServiceConfigurationError: org.apache.nifi.processor.Processor: Provider org.apache.nifi.processors.windows.event.log.ConsumeWindowsEventLog could not be instantiated java.util.ServiceConfigurationError: org.apache.nifi.processor.Processor: Provider org.apache.nifi.processors.windows.event.log.ConsumeWindowsEventLog could not be instantiated at java.util.ServiceLoader.fail(ServiceLoader.java:232) at java.util.ServiceLoader.access$100(ServiceLoader.java:185) at java.util.ServiceLoader$LazyIterator.nextService(ServiceLoader.java:384) at java.util.ServiceLoader$LazyIterator.next(ServiceLoader.java:404) at java.util.ServiceLoader$1.next(ServiceLoader.java:480) at org.apache.nifi.nar.StandardExtensionDiscoveringManager.loadExtensions(StandardExtensionDiscoveringManager.java:156) at org.apache.nifi.nar.StandardExtensionDiscoveringManager.discoverExtensions(StandardExtensionDiscoveringManager.java:131) at org.apache.nifi.nar.StandardExtensionDiscoveringManager.discoverExtensions(StandardExtensionDiscoveringManager.java:117) at org.apache.nifi.web.server.JettyServer.start(JettyServer.java:1042) at org.apache.nifi.NiFi.<init>(NiFi.java:158) at org.apache.nifi.NiFi.<init>(NiFi.java:72) at org.apache.nifi.NiFi.main(NiFi.java:301) Caused by: java.lang.NoSuchFieldError: SIZE at com.sun.jna.platform.win32.WinBase.<clinit>(WinBase.java:52) at com.sun.jna.platform.win32.Kernel32Util.getComputerName(Kernel32Util.java:60) at org.apache.nifi.processors.windows.event.log.ConsumeWindowsEventLog.<init>(ConsumeWindowsEventLog.java:178) at org.apache.nifi.processors.windows.event.log.ConsumeWindowsEventLog.<init>(ConsumeWindowsEventLog.java:164) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at java.lang.Class.newInstance(Class.java:442) at java.util.ServiceLoader$LazyIterator.nextService(ServiceLoader.java:380) ... 9 common frames omitted 2021-11-18 16:07:13,820 INFO [Thread-19] org.apache.nifi.NiFi Initiating shutdown of Jetty web server... 2021-11-18 16:07:13,820 INFO [Thread-19] org.apache.nifi.NiFi Jetty web server shutdown completed (nicely or otherwise). ... View more

I tried to change the package name of these 2 dependencies with the help of maven shade plugin, shade has places these dependencies classes in new package. Still whenever I add any of these dependenies to maven/jar nifi is failing to start !!! ... View more

You can write a simple custom processor which uses local caching (like Caffeine cache implementation) with cache expiry time as ur window time and build the logic. May be you can store words in cache and keep updating the count or something like that ... View more

@Green_  - Can I have a custom appender configured in logback.xml to collect logs and put that in MongoDB ? would that be possible with nifi logs ? ... View more

@Green_  Filtering means I may need to ignore some INFO level logs and consider only DEBUG or ERROR level logs... and I dont have to be using native nifi processors only.. but right way of doing is importtant. Please suggest if you see an other way ... View more