我正面临着一个问题与nifi写hdfs。我得到一个错误：

ERROR [Timer-Driven Process Thread-10] o.apache.nifi.processors.hadoop.PutHDFS PutHDFS[id=4af43efa-a8ff-18ac-0000-00002377fba5] Failed to properly initialize Processor. If still scheduled to run, NiFi will attempt to initialize and run the Processor again after the 'Administrative Yield Duration' has elapsed. Failure is due to java.lang.reflect.InvocationTargetException: java.lang.reflect.InvocationTargetException
java.lang.reflect.InvocationTargetException: null
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.apache.nifi.util.ReflectionUtils.invokeMethodsWithAnnotations(ReflectionUtils.java:137)
        at org.apache.nifi.util.ReflectionUtils.invokeMethodsWithAnnotations(ReflectionUtils.java:125)
        at org.apache.nifi.util.ReflectionUtils.invokeMethodsWithAnnotations(ReflectionUtils.java:70)
        at org.apache.nifi.util.ReflectionUtils.invokeMethodsWithAnnotation(ReflectionUtils.java:47)
        at org.apache.nifi.controller.StandardProcessorNode.lambda$initiateStart$1(StandardProcessorNode.java:1364)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.IllegalArgumentException: Can not create a Path from an empty string
        at org.apache.hadoop.fs.Path.checkPathArg(Path.java:126)
        at org.apache.hadoop.fs.Path.<init>(Path.java:134)
        at org.apache.nifi.processors.hadoop.AbstractHadoopProcessor.getConfigurationFromResources(AbstractHadoopProcessor.java:225)
        at org.apache.nifi.processors.hadoop.AbstractHadoopProcessor.resetHDFSResources(AbstractHadoopProcessor.java:254)
        at org.apache.nifi.processors.hadoop.AbstractHadoopProcessor.abstractOnScheduled(AbstractHadoopProcessor.java:205)
        ... 15 common frames omitted

我的hdfs配置是：

注意：在putfile上应用了相同的配置，它工作得非常好（kafka.topic不是空的）