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Posted to issues@nifi.apache.org by "David Handermann (Jira)" <ji...@apache.org> on 2021/10/25 21:37:00 UTC
[jira] [Assigned] (NIFI-9331) Potential NPE when logging
long-running tasks
[ https://issues.apache.org/jira/browse/NIFI-9331?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
David Handermann reassigned NIFI-9331:
--------------------------------------
Assignee: David Handermann
> Potential NPE when logging long-running tasks
> ---------------------------------------------
>
> Key: NIFI-9331
> URL: https://issues.apache.org/jira/browse/NIFI-9331
> Project: Apache NiFi
> Issue Type: Bug
> Components: Core Framework
> Reporter: Mark Payne
> Assignee: David Handermann
> Priority: Minor
>
> In the ThreadUtils class, we have the following code:
> if (monitor.getLockedStackFrame().equals(element))
> However, getLockedStackFrame() can return null, which results in a NPE such as:
> 2021-10-24 11:38:17,122 ERROR org.apache.nifi.engine.FlowEngine: Uncaught Exception in Runnable task
> java.lang.NullPointerException: null
> at org.apache.nifi.util.ThreadUtils.createStackTrace(ThreadUtils.java:72)
> at org.apache.nifi.controller.StandardProcessorNode.getActiveThreads(StandardProcessorNode.java:1443)
> at org.apache.nifi.components.monitor.LongRunningTaskMonitor.run(LongRunningTaskMonitor.java:57)
> at org.apache.nifi.engine.FlowEngine$2.run(FlowEngine.java:110)
> at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
> at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
> at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
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