Windows 上的 Hadoop。 YARN 无法以 java.lang.UnsatisfiedLinkError 启动

Question

我已经在 Windows hadoop-2.7.0 上安装/配置了 Hadoop

我可以成功启动“sbin\start-dfs”运行命令。 DataNode 和 NameNode 启动。我可以创建目录，将文件添加到 hadoop 系统中。

但是现在当我在“resourcemanager”窗口中尝试“sbin/start-yarn”时，我没有看到错误。但它在 yarn 的“namenode”上失败了

失败并出现此错误:-

15/06/21 17:26:49 INFO impl.MetricsConfig: loaded properties from hadoop-metrics
2.properties
15/06/21 17:26:49 INFO impl.MetricsSystemImpl: Scheduled snapshot period at 10 second(s).
15/06/21 17:26:49 INFO impl.MetricsSystemImpl: NodeManager metrics system started
15/06/21 17:26:49 FATAL nodemanager.NodeManager: Error starting NodeManager
java.lang.UnsatisfiedLinkError: org.apache.hadoop.io.nativeio.NativeIO$Windows.createDirectoryWithMode0(Ljava/lang/String;I)V
        at org.apache.hadoop.io.nativeio.NativeIO$Windows.createDirectoryWithMode0(Native Method)
        at org.apache.hadoop.io.nativeio.NativeIO$Windows.createDirectoryWithMode(NativeIO.java:524)
        at org.apache.hadoop.fs.RawLocalFileSystem.mkOneDirWithMode(RawLocalFileSystem.java:473)
        at org.apache.hadoop.fs.RawLocalFileSystem.mkdirsWithOptionalPermission(RawLocalFileSystem.java:526)
        at org.apache.hadoop.fs.RawLocalFileSystem.mkdirs(RawLocalFileSystem.java:504)
        at org.apache.hadoop.fs.FileSystem.primitiveMkdir(FileSystem.java:1064)
        at org.apache.hadoop.fs.DelegateToFileSystem.mkdir(DelegateToFileSystem.java:161)
        at org.apache.hadoop.fs.FilterFs.mkdir(FilterFs.java:197)
        at org.apache.hadoop.fs.FileContext$4.next(FileContext.java:730)
        at org.apache.hadoop.fs.FileContext$4.next(FileContext.java:726)
        at org.apache.hadoop.fs.FSLinkResolver.resolve(FSLinkResolver.java:90)
        at org.apache.hadoop.fs.FileContext.mkdir(FileContext.java:726)
        at org.apache.hadoop.yarn.server.nodemanager.DirectoryCollection.createDir(DirectoryCollection.java:365)
        at org.apache.hadoop.yarn.server.nodemanager.DirectoryCollection.createNonExistentDirs(DirectoryCollection.java:199)
        at org.apache.hadoop.yarn.server.nodemanager.LocalDirsHandlerService.serviceInit(LocalDirsHandlerService.java:152)
        at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
        at org.apache.hadoop.service.CompositeService.serviceInit(CompositeService.java:107)
        at org.apache.hadoop.yarn.server.nodemanager.NodeHealthCheckerService.serviceInit(NodeHealthCheckerService.java:48)
        at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
        at org.apache.hadoop.service.CompositeService.serviceInit(CompositeService.java:107)
        at org.apache.hadoop.yarn.server.nodemanager.NodeManager.serviceInit(NodeManager.java:254)
        at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
        at org.apache.hadoop.yarn.server.nodemanager.NodeManager.initAndStartNodeManager(NodeManager.java:463)
        at org.apache.hadoop.yarn.server.nodemanager.NodeManager.main(NodeManager.java:511)
15/06/21 17:26:49 INFO impl.MetricsSystemImpl: Stopping NodeManager metrics system...
15/06/21 17:26:49 INFO impl.MetricsSystemImpl: NodeManager metrics system stopped.
15/06/21 17:26:49 INFO impl.MetricsSystemImpl: NodeManager metrics system shutdown complete.
15/06/21 17:26:49 INFO nodemanager.NodeManager: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down NodeManager at idea-PC/27.4.177.205
************************************************************/

我在“sbin\start-dfs”时遇到过类似的问题。我尝试了不同的东西。当我在路径中添加 hadoop 的“bin”和“sbin”时，它看起来已经解决了。

能否请您提出有关 Yarn 问题的解决方案。

Answer 1

应该有一个 %HADOOP_HOME%\bin\hadoop.dll 包含 native method . %HADOOP_HOME%\bin 应该在路径中。如果您从源代码构建，请确保构建并放置了 hadoop.dll。