java.io.IOException: Could not locate executable null\bin\winutils.exe in the Hadoop binaries
在已经搭建好的集群环境Centos6.6+Hadoop2.7+Hbase0.98+Spark1.3.1下,在Win7系统Intellij开发工具中调试Spark读取Hbase。运行直接报错:
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15 / 06 / 11 15 : 35 : 50 ERROR Shell: Failed to locate the winutils binary in the hadoop binary path java.io.IOException: Could not locate executable null \bin\winutils.exe in the Hadoop binaries. at org.apache.hadoop.util.Shell.getQualifiedBinPath(Shell.java: 356 ) at org.apache.hadoop.util.Shell.getWinUtilsPath(Shell.java: 371 ) at org.apache.hadoop.util.Shell.<clinit>(Shell.java: 364 ) at org.apache.hadoop.util.StringUtils.<clinit>(StringUtils.java: 80 ) at org.apache.hadoop.security.SecurityUtil.getAuthenticationMethod(SecurityUtil.java: 611 ) at org.apache.hadoop.security.UserGroupInformation.initialize(UserGroupInformation.java: 272 ) at org.apache.hadoop.security.UserGroupInformation.ensureInitialized(UserGroupInformation.java: 260 ) at org.apache.hadoop.security.UserGroupInformation.loginUserFromSubject(UserGroupInformation.java: 790 ) at org.apache.hadoop.security.UserGroupInformation.getLoginUser(UserGroupInformation.java: 760 ) at org.apache.hadoop.security.UserGroupInformation.getCurrentUser(UserGroupInformation.java: 633 ) at org.apache.spark.util.Utils$$anonfun$getCurrentUserName$ 1 .apply(Utils.scala: 2001 ) at org.apache.spark.util.Utils$$anonfun$getCurrentUserName$ 1 .apply(Utils.scala: 2001 ) at scala.Option.getOrElse(Option.scala: 120 ) at org.apache.spark.util.Utils$.getCurrentUserName(Utils.scala: 2001 ) at org.apache.spark.SecurityManager.<init>(SecurityManager.scala: 207 ) at org.apache.spark.SparkEnv$.create(SparkEnv.scala: 218 ) at org.apache.spark.SparkEnv$.createDriverEnv(SparkEnv.scala: 163 ) at org.apache.spark.SparkContext.createSparkEnv(SparkContext.scala: 269 ) at org.apache.spark.SparkContext.<init>(SparkContext.scala: 272 ) at org.apache.spark.SparkContext.<init>(SparkContext.scala: 154 ) at SparkFromHbase$.main(SparkFromHbase.scala: 15 ) at SparkFromHbase.main(SparkFromHbase.scala) 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 com.intellij.rt.execution.application.AppMain.main(AppMain.java: 134 ) |
查看hadoop源码发现里有这么一段:
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public static final String getQualifiedBinPath(String executable) throws IOException { // construct hadoop bin path to the specified executable String fullExeName = HADOOP_HOME_DIR + File.separator + "bin" + File.separator + executable; File exeFile = new File(fullExeName); if (!exeFile.exists()) { throw new IOException( "Could not locate executable " + fullExeName + " in the Hadoop binaries." ); } return exeFile.getCanonicalPath(); } private static String HADOOP_HOME_DIR = checkHadoopHome(); private static String checkHadoopHome() { // first check the Dflag hadoop.home.dir with JVM scope String home = System.getProperty( "hadoop.home.dir" ); // fall back to the system/user-global env variable if (home == null ) { home = System.getenv( "HADOOP_HOME" ); } ... } |
很明显应该是HADOOP_HOME的问题。如果HADOOP_HOME为空,必然fullExeName为null\bin\winutils.exe。解决方法很简单,配置环境变量,不想重启电脑可以在程序里加上:
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System.setProperty( "hadoop.home.dir" , "E:\\Program Files\\hadoop-2.7.0" ); |
注:E:\\Program Files\\hadoop-2.7.0是我本机解压的hadoop的路径。
稍后再执行,你可能还是会出现同样的错误,这个时候你可能会要怪我了。其实一开始我是拒绝的,因为你进入你的hadoop-x.x.x/bin目录下看,你会发现你压根就没有winutils.exe这个东东。
于是我告诉你,你可以去github下载一个,地球人都知道的地址发你一个。
地址:https://github.com/srccodes/hadoop-common-2.2.0-bin
不要顾虑它的版本,不用怕,因为我用的最新的hadoop-2.7.0都没问题!下载好后,把winutils.exe加入你的hadoop-x.x.x/bin下。