idea中开发spark程序出现异常：
18/12/10 11:09:36 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:378) at org.apache.hadoop.util.Shell.getWinUtilsPath(Shell.java:393) at org.apache.hadoop.util.Shell.<clinit>(Shell.java:386) at org.apache.hadoop.util.StringUtils.<clinit>(StringUtils.java:79) at org.apache.hadoop.security.Groups.parseStaticMapping(Groups.java:116) at org.apache.hadoop.security.Groups.<init>(Groups.java:93) at org.apache.hadoop.security.Groups.<init>(Groups.java:73) at org.apache.hadoop.security.Groups.getUserToGroupsMappingService(Groups.java:293) at org.apache.hadoop.security.UserGroupInformation.initialize(UserGroupInformation.java:283) at org.apache.hadoop.security.UserGroupInformation.ensureInitialized(UserGroupInformation.java:260) at org.apache.hadoop.security.UserGroupInformation.loginUserFromSubject(UserGroupInformation.java:789) at org.apache.hadoop.security.UserGroupInformation.getLoginUser(UserGroupInformation.java:774) at org.apache.hadoop.security.UserGroupInformation.getCurrentUser(UserGroupInformation.java:647) at org.apache.spark.util.Utils$$anonfun$getCurrentUserName$1.apply(Utils.scala:2464) at org.apache.spark.util.Utils$$anonfun$getCurrentUserName$1.apply(Utils.scala:2464) at scala.Option.getOrElse(Option.scala:121) at org.apache.spark.util.Utils$.getCurrentUserName(Utils.scala:2464) at org.apache.spark.SparkContext.<init>(SparkContext.scala:292) at SparkTestMain$.main(SparkTestMain.scala:6) at SparkTestMain.main(SparkTestMain.scala)
原因是程序找不到HADOOP_HOME里面的winutils.exe。
解决方法
先下载：https://github.com/srccodes/hadoop-common-2.2.0-bin
然后再程序中设置代码： System.setProperty("hadoop.home.dir", "D:\\bigdata\\hadoop-2.7.3")
最佳办法是判断是否开发环境来设置：
if (args(5).equals("deve")) {
System.setProperty("hadoop.home.dir", "D:\\bigdata\\hadoop-2.7.3")
masterUri = "local[*]"
}
