配置Apache Hop经Kerberos访问HDFS遇浏览失败问题求助

我需要创建文件转换管道，从Kerberos认证的远程HDFS下载输入文件并将输出文件存储回该HDFS。本地已完成以下配置：

• 安装Kerberos并获取密钥；
• 设置环境变量（JAVA_HOME、HADOOP_CONF_DIR和HADOOP_OPTS）；
• 安装Hadoop客户端，通过CLI命令hdfs dfs -ls hdfs://clusterhadoop/user测试远程HDFS读写成功；
• 在hop/config/hop-config.json中添加环境变量；
• 将Hadoop依赖包hadoop-common-3.1.1.jar和hadoop-hdfs-3.1.1.jar放入hop/plugins/tech/下新建的hdfs/lib目录；
• 在插件资源管理器中添加HDFS，主类设为org.apache.hadoop.fs.hdfs.HdfsFileSystem并指定上述jar路径。

但配置完成后，使用CSV File Input或TextFile Input组件查看HDFS内容时失败，报错如下：

Error browsing to location: 'hdfs://clusterhadoop/user/toto.csv'
FileNotFolderException: Could not list the contents of "file:///home/ubuntu/hop/hdfs:/clusterhadoop/user" because it is not a folder.
Root cause: FileNotFolderException: Could not list the contents of "file:///home/ubuntu/hop/hdfs:/clusterhadoop/user" because it is not a folder.

org.apache.commons.vfs2.FileNotFolderException: Could not list the contents of "file:///home/ubuntu/hop/hdfs:/clusterhadoop/user" because it is not a folder.
    at org.apache.commons.vfs2.provider.AbstractFileObject.getChildren(AbstractFileObject.java:1107)
    at org.apache.hop.ui.core.vfs.HopVfsFileDialog.populateFolder(HopVfsFileDialog.java:941)
    at org.apache.hop.ui.core.vfs.HopVfsFileDialog.refreshBrowser(HopVfsFileDialog.java:898)
    at org.apache.hop.ui.core.vfs.HopVfsFileDialog.refreshAll(HopVfsFileDialog.java:1278)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:569)
    at org.apache.hop.ui.core.gui.BaseGuiWidgets.lambda$getListener$1(BaseGuiWidgets.java:213)
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:91)
    at org.eclipse.swt.widgets.Display.sendEvent(Display.java:5857)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1617)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:5067)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:4519)
    at org.apache.hop.ui.core.vfs.HopVfsFileDialog.open(HopVfsFileDialog.java:584)
    at org.apache.hop.ui.core.dialog.BaseDialog.presentFileDialog(BaseDialog.java:278)
    at org.apache.hop.ui.core.dialog.BaseDialog.presentFileDialog(BaseDialog.java:172)
    at org.apache.hop.pipeline.transforms.fileinput.text.TextFileInputDialog.lambda$open$8(TextFileInputDialog.java:484)
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:91)
    at org.eclipse.swt.widgets.Display.sendEvent(Display.java:5857)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1617)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:5067)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:4519)
    at org.apache.hop.ui.core.dialog.BaseDialog.defaultShellHandling(BaseDialog.java:528)
    at org.apache.hop.pipeline.transforms.fileinput.text.TextFileInputDialog.open(TextFileInputDialog.java:501)
    at org.apache.hop.ui.hopgui.file.pipeline.delegates.HopGuiPipelineTransformDelegate.editTransform(HopGuiPipelineTransformDelegate.java:195)
    at org.apache.hop.ui.hopgui.file.pipeline.HopGuiPipelineGraph.editTransform(HopGuiPipelineGraph.java:3368)
    at org.apache.hop.ui.hopgui.file.pipeline.HopGuiPipelineGraph.editTransform(HopGuiPipelineGraph.java:2210)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:569)
    at org.apache.hop.core.gui.plugin.action.GuiActionLambdaBuilder.lambda$createLambda$0(GuiActionLambdaBuilder.java:97)
    at org.apache.hop.ui.hopgui.context.GuiContextUtil.lambda$handleActionSelection$0(GuiContextUtil.java:182)
    at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:40)
    at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:132)
    at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:5042)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:4522)
    at org.apache.hop.ui.hopgui.HopGui.open(HopGui.java:478)
    at org.apache.hop.ui.hopgui.HopGui.main(HopGui.java:356)

恳请帮忙解决该问题，感谢！

内容的提问来源于stack exchange，提问作者user30133690