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https://issues.apache.org/jira/browse/NIFI-5894?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16728822#comment-16728822
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Eric Ulicny commented on NIFI-5894:
-----------------------------------
Code updated based on PR comments.
> FTPTransfer NullPointerException - FTPFile.getTimestamp() returns null
> ----------------------------------------------------------------------
>
> Key: NIFI-5894
> URL: https://issues.apache.org/jira/browse/NIFI-5894
> Project: Apache NiFi
> Issue Type: Bug
> Components: Extensions
> Affects Versions: 1.8.0
> Reporter: henning ottesen
> Assignee: Eric Ulicny
> Priority: Major
> Time Spent: 50m
> Remaining Estimate: 0h
>
> 2018-12-13 10:34:07,405 WARN [Timer-Driven Process Thread-2]
> o.a.n.controller.tasks.ConnectableTask Administratively Yielding
> ListFTP[id=a6cee9c8-0167-1000-2bc2-5e69d2e33af5] due to uncaught Exception:
> java.lang.NullPointerException java.lang.NullPointerException: null
> at
> org.apache.nifi.processors.standard.util.FTPTransfer.newFileInfo(FTPTransfer.java:305)
> at
> org.apache.nifi.processors.standard.util.FTPTransfer.getListing(FTPTransfer.java:270)
> at
> org.apache.nifi.processors.standard.util.FTPTransfer.getListing(FTPTransfer.java:260)
> at
> org.apache.nifi.processors.standard.util.FTPTransfer.getListing(FTPTransfer.java:191)
> at
> org.apache.nifi.processors.standard.ListFileTransfer.performListing(ListFileTransfer.java:106)
> at
> org.apache.nifi.processor.util.list.AbstractListProcessor.listByTrackingTimestamps(AbstractListProcessor.java:471)
> at
> org.apache.nifi.processor.util.list.AbstractListProcessor.onTrigger(AbstractListProcessor.java:413)
> at
> org.apache.nifi.processor.AbstractProcessor.onTrigger(AbstractProcessor.java:27)
> at
> org.apache.nifi.controller.StandardProcessorNode.onTrigger(StandardProcessorNode.java:1165)
> at
> org.apache.nifi.controller.tasks.ConnectableTask.invoke(ConnectableTask.java:203)
> at
> org.apache.nifi.controller.scheduling.TimerDrivenSchedulingAgent$1.run(TimerDrivenSchedulingAgent.java:117)
> at
> java.util.concurrent.Executors$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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