hadoop datanode無法啓動無效的位置

Question

除datanode外，所有服務正在運行。當我啓動datanode時，我得到下面的錯誤。

> ************************************************************/ 
2017-09-05 10:19:06,339 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: registered UNIX signal handlers for [TERM, HUP, INT] 
2017-09-05 10:19:06,675 WARN org.apache.hadoop.hdfs.server.common.Util: Path /data1/hdfs/dn should be specified as a URI in configuration files. Please update hdfs configuration. 
2017-09-05 10:19:06,675 WARN org.apache.hadoop.hdfs.server.common.Util: Path /data2/hdfs/dn should be specified as a URI in configuration files. Please update hdfs configuration. 
2017-09-05 10:19:06,679 WARN org.apache.hadoop.hdfs.server.common.Util: Path /data3/hdfs/dn should be specified as a URI in configuration files. Please update hdfs configuration. 
2017-09-05 10:19:07,441 INFO org.apache.hadoop.security.UserGroupInformation: Login successful for user hadoop/hzes@HZ.DATA.COM using keytab file /opt/keytab/hadoop.keytab 
2017-09-05 10:19:08,208 WARN org.apache.hadoop.hdfs.server.datanode.DataNode: Invalid dfs.datanode.data.dir /data1/hdfs/dn : 
java.io.FileNotFoundException: File file:/data1/hdfs/dn does not exist 
     at org.apache.hadoop.fs.RawLocalFileSystem.deprecatedGetFileStatus(RawLocalFileSystem.java:598) 
     at org.apache.hadoop.fs.RawLocalFileSystem.getFileLinkStatusInternal(RawLocalFileSystem.java:811) 
     at org.apache.hadoop.fs.RawLocalFileSystem.getFileStatus(RawLocalFileSystem.java:588) 
     at org.apache.hadoop.fs.FilterFileSystem.getFileStatus(FilterFileSystem.java:425) 
     at org.apache.hadoop.util.DiskChecker.mkdirsWithExistsAndPermissionCheck(DiskChecker.java:139) 
     at org.apache.hadoop.util.DiskChecker.checkDir(DiskChecker.java:156) 
     at org.apache.hadoop.hdfs.server.datanode.DataNode$DataNodeDiskChecker.checkDir(DataNode.java:2516) 
     at org.apache.hadoop.hdfs.server.datanode.DataNode.checkStorageLocations(DataNode.java:2558) 
     at org.apache.hadoop.hdfs.server.datanode.DataNode.makeInstance(DataNode.java:2540) 
     at org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:2432) 
     at org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:2479) 
     at org.apache.hadoop.hdfs.server.datanode.DataNode.secureMain(DataNode.java:2661) 
     at org.apache.hadoop.hdfs.server.datanode.SecureDataNodeStarter.start(SecureDataNodeStarter.java:77) 
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) 
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
     at java.lang.reflect.Method.invoke(Method.java:606) 
     at org.apache.commons.daemon.support.DaemonLoader.start(DaemonLoader.java:243) 
............... 


2017-09-05 10:19:08,218 FATAL org.apache.hadoop.hdfs.server.datanode.DataNode: Exception in secureMain 
java.io.IOException: All directories in dfs.datanode.data.dir are invalid: "/data1/hdfs/dn" "/data2/hdfs/dn" "/data3/hdfs/dn" 
     at org.apache.hadoop.hdfs.server.datanode.DataNode.checkStorageLocations(DataNode.java:2567) 
     at org.apache.hadoop.hdfs.server.datanode.DataNode.makeInstance(DataNode.java:2540) 
     at org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:2432) 
     at org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:2479) 
     at org.apache.hadoop.hdfs.server.datanode.DataNode.secureMain(DataNode.java:2661) 
     at org.apache.hadoop.hdfs.server.datanode.SecureDataNodeStarter.start(SecureDataNodeStarter.java:77) 
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) 
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
     at java.lang.reflect.Method.invoke(Method.java:606) 
     at org.apache.commons.daemon.support.DaemonLoader.start(DaemonLoader.java:243) 
2017-09-05 10:19:08,221 INFO org.apache.hadoop.util.ExitUtil: Exiting with status 1 
2017-09-05 10:19:08,233 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: SHUTDOWN_MSG: 

我的親戚配置：

<name>dfs.datanode.data.dir</name> 
<value>/data1/hdfs/dn,/data2/hdfs/dn,/data3/hdfs/dn</value> 

爲什麼呢？我runinig與根的所有服務

當我將配置更改到另一個位置（eq：/ home/hadoop），它的工作原理。

Answer 1

1. 什麼是/data1/hdfs/dn,/data2/hdfs/dn,/data3/hdfs/dn目錄的權限和所有者。
2. 您不必提及/hdfs/dn/，它會自動創建/dfs/dn/。