apache-nifi - NiFi FlowFile 存储库无法更新

Question

我正在使用 Apache NiFi 来摄取和预处理一些 CSV 文件，但是在长时间运行时，它总是失败。错误总是一样的:

FlowFile Repository failed to update

在日志中搜索，我总是看到这个错误:

2018-07-11 22:42:49,913 ERROR [Timer-Driven Process Thread-10] o.a.n.p.attributes.UpdateAttribute UpdateAttribute[id=c7f45dc9-ee12-31b0-8dee-6f1746b3c544] Failed to process session due to org.apache.nifi.processor.exception.ProcessException: FlowFile Repository failed to update: org.apache.nifi.processor.exception.ProcessException: FlowFile Repository failed to update
org.apache.nifi.processor.exception.ProcessException: FlowFile Repository failed to update
        at org.apache.nifi.controller.repository.StandardProcessSession.commit(StandardProcessSession.java:405)
        at org.apache.nifi.controller.repository.StandardProcessSession.commit(StandardProcessSession.java:336)
        at org.apache.nifi.processor.AbstractProcessor.onTrigger(AbstractProcessor.java:28)
        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)
Caused by: java.io.IOException: **Cannot update journal file ./flowfile_repository/journals/8772495.journal because this journal has already been closed**
        at org.apache.nifi.wali.LengthDelimitedJournal.checkState(LengthDelimitedJournal.java:223)
        at org.apache.nifi.wali.LengthDelimitedJournal.update(LengthDelimitedJournal.java:178)
        at org.apache.nifi.wali.SequentialAccessWriteAheadLog.update(SequentialAccessWriteAheadLog.java:121)
        at org.apache.nifi.controller.repository.WriteAheadFlowFileRepository.updateRepository(WriteAheadFlowFileRepository.java:300)
        at org.apache.nifi.controller.repository.WriteAheadFlowFileRepository.updateRepository(WriteAheadFlowFileRepository.java:257)

让我相信根本原因是 Nifi 无法更新日志文件 ./flowfile_repository/journals/8772495.journal 因为该日志已经关闭**，如日志文件所示。

我该如何解决这个问题？

谢谢!

Answer 1

前几天我遇到了同样的问题。
当我检查“flowfile_repository”所在卷上的磁盘空间时，我看到了这个

/dev/sdc1       447G  447G   24K 100% /var/proj/data2

它的 100% 已满。