yarn.nodemanager.local-dirs文件夹的文件权限应该是什么？我已经弄乱了这些文件的权限，无法解决它。目前我已将文件夹权限设置为755yarn:hadoop. 每当我尝试运行nodemanager时，都会遇到eperm:operation not allowed error。详细信息-

2014-06-19 22:15:17,954 INFO org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService: usercache path : file://opt1/yarn/nm2/usercache_DEL_1403241103430
2014-06-19 22:15:17,954 INFO org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService: usercache path : file://opt1/yarn/nm2/usercache_DEL_1403241317919
2014-06-19 22:15:17,954 INFO org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService: usercache path : file://opt1/yarn/nm2/usercache_DEL_1403241109852
2014-06-19 22:15:17,954 INFO org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService: usercache path : file://opt1/yarn/nm2/usercache_DEL_1403241098628
2014-06-19 22:15:17,992 INFO org.apache.hadoop.service.AbstractService: Service org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService failed in state INITED; cause: org.apache.hadoop.yarn.exceptions.YarnRuntimeException: Failed to initialize LocalizationService
org.apache.hadoop.yarn.exceptions.YarnRuntimeException: Failed to initialize LocalizationService
        at org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.serviceInit(ResourceLocalizationService.java:233)
        at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
        at org.apache.hadoop.service.CompositeService.serviceInit(CompositeService.java:108)
        at org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.serviceInit(ContainerManagerImpl.java:220)
        at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
        at org.apache.hadoop.service.CompositeService.serviceInit(CompositeService.java:108)
        at org.apache.hadoop.yarn.server.nodemanager.NodeManager.serviceInit(NodeManager.java:188)
        at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
        at org.apache.hadoop.yarn.server.nodemanager.NodeManager.initAndStartNodeManager(NodeManager.java:353)
        at org.apache.hadoop.yarn.server.nodemanager.NodeManager.main(NodeManager.java:401)
Caused by: EPERM: Operation not permitted
        at org.apache.hadoop.io.nativeio.NativeIO$POSIX.chmodImpl(Native Method)
        at org.apache.hadoop.io.nativeio.NativeIO$POSIX.chmod(NativeIO.java:226)
        at org.apache.hadoop.fs.RawLocalFileSystem.setPermission(RawLocalFileSystem.java:629)
        at org.apache.hadoop.fs.RawLocalFileSystem.mkdirs(RawLocalFileSystem.java:421)
        at org.apache.hadoop.fs.FileSystem.primitiveMkdir(FileSystem.java:1061)
        at org.apache.hadoop.fs.DelegateToFileSystem.mkdir(DelegateToFileSystem.java:157)
        at org.apache.hadoop.fs.FilterFs.mkdir(FilterFs.java:187)
        at org.apache.hadoop.fs.FileContext$4.next(FileContext.java:720)
        at org.apache.hadoop.fs.FileContext$4.next(FileContext.java:716)
        at org.apache.hadoop.fs.FSLinkResolver.resolve(FSLinkResolver.java:90)
        at org.apache.hadoop.fs.FileContext.mkdir(FileContext.java:716)
        at org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.serviceInit(ResourceLocalizationService.java:230)
        ... 9 more

本地dirs文件夹在尝试启动失败后具有以下文件夹-filecache、nmprivate、3 usercache\u del\u timestamp。根据错误的位置（resourcelocalizationservice.java，第233行），有三种可能的操作会引发此错误-
a） 清理旧文件-这是有效的，正如日志输出所反映的那样
b） 创建新文件-在尝试启动失败后，我在本地目录中看到三种文件-三个usercache\u del\uux*、filecache和nmprivate文件。
c） 创建日志路径-我已检查日志文件夹是否具有775权限yarn:hadoop.
可能出了什么问题？我正在使用cloudera来管理我的集群。