尝试在Eclipse的hadoop中运行Wordcount程序(Windows 7)。并仅在 eclipse 中传递这些参数
E:\hadoop\eclipse-hadoop-pro\workspace-hadoop\WordCountPro\input\word.txt
E:\hadoop\eclipse-hadoop-pro\workspace-hadoop\WordCountPro\output
我已经在项目中创建了输入文件，就像输入文件夹一样，并且在其中包含了word.txt文件
但是它正在经历以下的挑战
2015-04-08 15:30:09,947 WARN [main] util.NativeCodeLoader (NativeCodeLoader.java:<clinit>(62)) - Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
2015-04-08 15:30:10,238 ERROR [main] util.Shell (Shell.java:getWinUtilsPath(373)) - Failed to locate the winutils binary in the hadoop binary path
java.io.IOException: Could not locate executable E:\hadoop\hadoop-HADOOP_HOME\hadoop-2.6.0\bin\bin\winutils.exe in the Hadoop binaries.
at org.apache.hadoop.util.Shell.getQualifiedBinPath(Shell.java:355)
at org.apache.hadoop.util.Shell.getWinUtilsPath(Shell.java:370)
at org.apache.hadoop.util.Shell.<clinit>(Shell.java:363)
at org.apache.hadoop.util.StringUtils.<clinit>(StringUtils.java:79)
at org.apache.hadoop.security.Groups.parseStaticMapping(Groups.java:104)
at org.apache.hadoop.security.Groups.<init>(Groups.java:86)
at org.apache.hadoop.security.Groups.<init>(Groups.java:66)
at org.apache.hadoop.security.Groups.getUserToGroupsMappingService(Groups.java:280)
at org.apache.hadoop.security.UserGroupInformation.initialize(UserGroupInformation.java:271)
at org.apache.hadoop.security.UserGroupInformation.ensureInitialized(UserGroupInformation.java:248)
at org.apache.hadoop.security.UserGroupInformation.loginUserFromSubject(UserGroupInformation.java:763)
at org.apache.hadoop.security.UserGroupInformation.getLoginUser(UserGroupInformation.java:748)
at org.apache.hadoop.security.UserGroupInformation.getCurrentUser(UserGroupInformation.java:621)
at org.apache.hadoop.mapreduce.task.JobContextImpl.<init>(JobContextImpl.java:72)
at org.apache.hadoop.mapreduce.Job.<init>(Job.java:144)
at org.apache.hadoop.mapreduce.Job.getInstance(Job.java:187)
at org.apache.hadoop.mapreduce.Job.getInstance(Job.java:206)
at com.WordCount.main(WordCount.java:52)
2015-04-08 15:30:11,039 INFO [main] Configuration.deprecation (Configuration.java:warnOnceIfDeprecated(1049)) - session.id is deprecated. Instead, use dfs.metrics.session-id
2015-04-08 15:30:11,041 INFO [main] jvm.JvmMetrics (JvmMetrics.java:init(76)) - Initializing JVM Metrics with processName=JobTracker, sessionId=
Exception in thread "main" org.apache.hadoop.mapred.FileAlreadyExistsException: Output directory file:/E:/hadoop/eclipse-hadoop-pro/workspace-hadoop/WordCountPro/output already exists
at org.apache.hadoop.mapreduce.lib.output.FileOutputFormat.checkOutputSpecs(FileOutputFormat.java:146)
at org.apache.hadoop.mapreduce.JobSubmitter.checkSpecs(JobSubmitter.java:562)
at org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:432)
at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1296)
at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1293)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Unknown Source)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1628)
at org.apache.hadoop.mapreduce.Job.submit(Job.java:1293)
at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:1314)
at com.WordCount.main(WordCount.java:61)
最佳答案
我怀疑Hadoop是否正确安装。检查您的计算机是否所有守护程序都在运行。如果没有运行，请考虑重新检查或重新安装缺少的守护程序。
ERROR [main] util.Shell (Shell.java:getWinUtilsPath(373)) - Failed to locate the winutils binary in the hadoop binary path java.io.IOException: Could not locate executable
关于hadoop - 在Windows中的Eclipse中调试hadoop Wordcount程序，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/29512435/