无法在根目录下面创建目录

[T-winkle]

无法在HDFS的根目录下创建目录，IDEA2017与2019都不能创建，2019启动时报错如下：

Access is allowed from event dispatch thread only.

com.intellij.openapi.diagnostic.RuntimeExceptionWithAttachments: EventQueue.isDispatchThread()=false Toolkit.getEventQueue()=com.intellij.ide.IdeEventQueue@79717534
Current thread: Thread[ApplicationImpl pooled thread 1,1,Idea Thread Group] 1526617034
SystemEventQueueThread: Thread[AWT-EventQueue-0 2019.2.1#IU-192.6262.58 IDEA, eap:false, os:Windows 10 10.0, java-version:JetBrains s.r.o 11.0.3+12-b304.39 2019.2.1#IU-192.6262.58 IDEA, eap:false, os:Windows 10 10.0, java-version:JetBrains s.r.o 11.0.3+12-b304.39,6,Idea Thread Group] 1126234283
	at com.intellij.openapi.application.impl.ApplicationImpl.assertIsDispatchThread(ApplicationImpl.java:1068)
	at com.intellij.openapi.application.impl.ApplicationImpl.assertIsDispatchThread(ApplicationImpl.java:1057)
	at com.intellij.ui.tabs.impl.JBTabsImpl.getTabs(JBTabsImpl.java:1392)
	at com.fangyuzhong.intelliJ.hadoop.fsbrowser.ui.TabbedBrowserForm.getBrowserForm(TabbedBrowserForm.java:114)
	at com.fangyuzhong.intelliJ.hadoop.fsbrowser.ui.TabbedBrowserForm.getBrowserTree(TabbedBrowserForm.java:148)
	at com.fangyuzhong.intelliJ.hadoop.fsbrowser.ui.BrowserToolWindowForm.getBrowserTree(BrowserToolWindowForm.java:126)
	at com.fangyuzhong.intelliJ.hadoop.fsbrowser.FileSystemBrowserManager.scrollToSelectedElement(FileSystemBrowserManager.java:217)
	at com.fangyuzhong.intelliJ.hadoop.fsobject.FileSystemObjectImpl.buildTreeChildren(FileSystemObjectImpl.java:486)
	at com.fangyuzhong.intelliJ.hadoop.fsobject.FileSystemObjectImpl.access$000(FileSystemObjectImpl.java:42)
	at com.fangyuzhong.intelliJ.hadoop.fsobject.FileSystemObjectImpl$2.execute(FileSystemObjectImpl.java:448)
	at com.fangyuzhong.intelliJ.hadoop.core.thread.BackgroundTask.run(BackgroundTask.java:86)
	at com.intellij.openapi.progress.impl.CoreProgressManager$TaskRunnable.run(CoreProgressManager.java:894)
	at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcess$2(CoreProgressManager.java:169)
	at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:591)
	at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:537)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:59)
	at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:156)
	at com.intellij.openapi.progress.impl.CoreProgressManager$4.run(CoreProgressManager.java:408)
	at com.intellij.openapi.application.impl.ApplicationImpl$1.run(ApplicationImpl.java:294)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base/java.lang.Thread.run(Thread.java:834)