Windows 10上的Apache hadoop安装

Question

在Windows10上设置没有Cygwin的单节点集群时，我遵循了特定的文档- Link for Hadoop installation in windows 10

我在使用D:\hadoop-2.6.2.tar\hadoop-2.6.2\hadoop-2.6.2\sbin>start-dfs.cmd启动hdfs时遇到以下错误

错误消息堆栈跟踪：

17/01/12 12:25:42 FATAL datanode.DataNode: Exception in secureMain java.lang.RuntimeException: Error while running command to get file permissions : ExitCodeException exitCode=-1073741515:
    at org.apache.hadoop.util.Shell.runCommand(Shell.java:538)
    at org.apache.hadoop.util.Shell.run(Shell.java:455)
    at org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:715)
    at org.apache.hadoop.util.Shell.execCommand(Shell.java:808)
    at org.apache.hadoop.util.Shell.execCommand(Shell.java:791)
    at org.apache.hadoop.fs.FileUtil.execCommand(FileUtil.java:1097)
    at org.apache.hadoop.fs.RawLocalFileSystem$DeprecatedRawLocalFileStatus.loadPermissionInfo(RawLocalFileSystem.java:582)
    at org.apache.hadoop.fs.RawLocalFileSystem$DeprecatedRawLocalFileStatus.getPermission(RawLocalFileSystem.java:557)
    at org.apache.hadoop.util.DiskChecker.mkdirsWithExistsAndPermissionCheck(DiskChecker.java:139)
    at org.apache.hadoop.util.DiskChecker.checkDir(DiskChecker.java:156)
    at org.apache.hadoop.hdfs.server.datanode.DataNode$DataNodeDiskChecker.checkDir(DataNode.java:2299)
    at org.apache.hadoop.hdfs.server.datanode.DataNode.checkStorageLocations(DataNode.java:2341)
    at org.apache.hadoop.hdfs.server.datanode.DataNode.makeInstance(DataNode.java:2323)
    at org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:2215)
    at org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:2262)
    at org.apache.hadoop.hdfs.server.datanode.DataNode.secureMain(DataNode.java:2438)
    at org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:2462)

    at org.apache.hadoop.fs.RawLocalFileSystem$DeprecatedRawLocalFileStatus.loadPermissionInfo(RawLocalFileSystem.java:620)
    at org.apache.hadoop.fs.RawLocalFileSystem$DeprecatedRawLocalFileStatus.getPermission(RawLocalFileSystem.java:557)
    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:2299)
    at org.apache.hadoop.hdfs.server.datanode.DataNode.checkStorageLocations(DataNode.java:2341)
    at org.apache.hadoop.hdfs.server.datanode.DataNode.makeInstance(DataNode.java:2323)
    at org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:2215)
    at org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:2262)
    at org.apache.hadoop.hdfs.server.datanode.DataNode.secureMain(DataNode.java:2438)
    at org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:2462) 17/01/12 12:25:42 INFO util.ExitUtil: Exiting with status 1

另请参阅以下有关启动namenode的错误消息：

17/01/12 12:25:43 FATAL namenode.NameNode: Failed to start namenode.
java.lang.UnsatisfiedLinkError: org.apache.hadoop.io.nativeio.NativeIO$Windows.access0(Ljava/lang/String;I)Z
        at org.apache.hadoop.io.nativeio.NativeIO$Windows.access0(Native Method)
        at org.apache.hadoop.io.nativeio.NativeIO$Windows.access(NativeIO.java:557)
        at org.apache.hadoop.fs.FileUtil.canWrite(FileUtil.java:996)
        at org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.analyzeStorage(Storage.java:490)
        at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverStorageDirs(FSImage.java:309)
        at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:202)
        at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:1022)
        at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:741)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.loadNamesystem(NameNode.java:538)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:597)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:764)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:748)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1441)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1507)
17/01/12 12:25:43 INFO util.ExitUtil: Exiting with status 1

Answer 1

[]问题分析] /data目录权限不足，无法启动NameNode。

解决方案

(1)根目录中，分配给hadoop用户的/data/目录权限的操作；

(2) /data目录文件为空；

(3)重新格式化NameNode，重启hadoop集群。