Hello,
I am deploying NIFI 1.13.0 on Windows 10 and Windows Server and as soon as the instance is active it starts logging the following error:
2021-03-05 15:57:39,728 ERROR [Timer-Driven Process Thread-5] o.apache.nifi.controller.FlowController Failed to capture component stats for Stats History
java.lang.NullPointerException: null
at org.apache.nifi.diagnostics.SystemDiagnostics.getOpenFileHandles(SystemDiagnostics.java:224)
at org.apache.nifi.controller.FlowController.getNodeStatusSnapshot(FlowController.java:3011)
at org.apache.nifi.controller.FlowController.access$400(FlowController.java:230)
at org.apache.nifi.controller.FlowController$2.run(FlowController.java:697)
at org.apache.nifi.engine.FlowEngine$2.run(FlowEngine.java:110)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
at java.base/java.util.concurrent.FutureTask.runAndReset(FutureTask.java:305)
at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:305)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:834)
This behavior is the same in an open box instance (without any configuration) and in secured instances (tls-toolkit); and at first glance it doesn't seem to have any impact on the behavior of the instance functionality, but it causes rapid growth of the nifi-app.log file and makes it difficult to read.
This error does not appear in 1.12.
I'll appreciate your help.
Thanks,
Temp
