Question

我正在使用eclipse插件进行hadoop。我可以通过制作一个hadoop服务器来查看HDFS中的所有文件，但是当我尝试从eclipse运行wordcount.java文件时，它给了我异常，而从终端运行顺利。例外如下。

2/11/14 04:09:06 WARN util.NativeCodeLoader: Unable to load native-hadoop library for  your platform... using builtin-java classes where applicable
12/11/14 04:09:06 WARN mapred.JobClient: No job jar file set.  User classes may not be     found. See JobConf(Class) or JobConf#setJar(String).
12/11/14 04:09:06 WARN snappy.LoadSnappy: Snappy native library not loaded
12/11/14 04:09:06 INFO mapred.JobClient: Cleaning up the staging area file:/tmp/hadoop-hduser/mapred/staging/hduser1728681403/.staging/job_local_0001
12/11/14 04:09:06 ERROR security.UserGroupInformation: PriviledgedActionException as:hduser cause:org.apache.hadoop.mapred.InvalidInputException: Input path does not exist: file:/user/hduser/gutenberg
Exception in thread "main" org.apache.hadoop.mapred.InvalidInputException: Input path does not exist: file:/user/hduser/gutenberg
    at org.apache.hadoop.mapred.FileInputFormat.listStatus(FileInputFormat.java:197)
    at org.apache.hadoop.mapred.FileInputFormat.getSplits(FileInputFormat.java:208)
    at org.apache.hadoop.mapred.JobClient.writeOldSplits(JobClient.java:989)
    at org.apache.hadoop.mapred.JobClient.writeSplits(JobClient.java:981)
    at org.apache.hadoop.mapred.JobClient.access$600(JobClient.java:174)
    at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:897)
    at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:850)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAs(Subject.java:396)
    at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1121)
    at org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:850)
    at org.apache.hadoop.mapred.JobClient.submitJob(JobClient.java:824)
    at org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:1261)
    at WordCount.run(WordCount.java:149)
    at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
    at WordCount.main(WordCount.java:155)

Answer 1

我首先要研究这个：

ERROR security.UserGroupInformation: PriviledgedActionException as:hduser cause:org.apache.hadoop.mapred.InvalidInputException: Input path does not exist: file:/user/hduser/gutenberg

它似乎导致了问题。你确定这是正确的道路吗？如果是这样，您可能没有权限访问它。稍后我会尝试消除尽可能多的WARN。

Answer 2

感谢Shujaat解决了我的问题。从Eclipse我得到了同样的问题...... 使用hdfs：// localhost：54310 / user / ...而不是“/ user /...”

来自日食的wordcount

2 个答案: