eclipse下提交job时报错mapred.JobClient: No job jar file set. User classes may not be found.

错误信息：

11/10/14 13:52:07 WARN mapred.JobClient: Use GenericOptionsParser for parsing the arguments. Applications should implement Tool for the same.
11/10/14 13:52:07 WARN mapred.JobClient: No job jar file set. User classes may not be found. See JobConf(Class) or JobConf#setJar(String).
11/10/14 13:52:07 INFO input.FileInputFormat: Total input paths to process : 5
11/10/14 13:52:07 INFO mapred.JobClient: Running job: job_201110141041_0014
11/10/14 13:52:08 INFO mapred.JobClient: map 0% reduce 0%
11/10/14 13:52:19 INFO mapred.JobClient: Task Id : attempt_201110141041_0014_m_000000_0, Status : FAILED
java.lang.RuntimeException: java.lang.ClassNotFoundException: Finger$FingerMapper1
    at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:809)
    at org.apache.hadoop.mapreduce.JobContext.getMapperClass(JobContext.java:157)
    at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:569)

at org.apache.hadoop.mapred.MapTask.run(MapTask.java:305)

。。。。

出错的原因就是找不到Mapper类和Reduce类。

单机运行的时候是不会存在这个问题的，但是现在是提交到远程集群直接运行，就会出现问题了，原因可以参考这篇文章：http://blog.csdn.net/andyelvis/article/details/7706205

解决办法：

将本工程导出jar包放到工程根目录下面，并在提交程序前添加下面的设置

conf.set("mapred.jar", "loadforecast_utils.jar"); //其中loadforecast_utils.jar是你的导出的jar文件名。注意第一个参数不要拼写错了。

重新运行问题解决！

转载于:https://www.cnblogs.com/felixzh/p/4193749.html

eclipse下提交job时报错mapred.JobClient: No job jar file set. User classes may not be found.相关推荐

win7系统下安装anaconda时报错“failed to create menus”的解决方案
本人还是win7,看到anaconda出了新版本,适配python3.9的.下载安装,出现了"Failed to creat menus",折腾了好几次依然如故.即使下载安装了迷你 ...
阿里云Code（code.aliyun）提交代码时报错fatal: Authentication failed for‘https://code.aliyun.com/...‘身份验证失败
阿里云Code(code.aliyun)提交代码时报错fatal: Authentication failed for'https://code.aliyun.com/-'身份验证失败,是因为阿里云登 ...
【linux】可执行程序执行时报错-sh: ./mxc_v4l2_tvin.out: No such file or directory的解决方法
问题在imx6开发板上执行 ./mxc_v4l2_tvin.out时报错: -sh: ./mxc_v4l2_tvin.out: No such file or directory 原因查找 1.路径 ...
启动Mysql时报错：mysqld_safe mysqld from pid file /usr/local/mysql/data/Linux.pid ended
今天启动下mysql 的安全后台启动,发现报错:mysqld_safe mysqld from pid file /usr/local/mysql/data/Linux.pid ended 原本我以为 ...
win10中anaconda安装tensorflow时报错Traceback (most recent call last): File “E:\Anaconda3\lib\site-packag
windows系统anaconda安装tensorflow时报错解决办法. 报错: Traceback (most recent call last): File "E:\Anaconda3 ...
windows下使用java -jar运行jar包报错:Unable to open nested jar file BOT-INF/lib/geronimo-javamail_1.4_spec-1.
windows下使用java -jar命令运行jar包报错问题:Unable to open nested jar file 'BOT-INF/lib/geronimo-javamail_1.4_sp ...
windows下的eclipse运行hdfs程序时报错 (null) entry in command string: null chmod 0644【笔记自用】
运行下面代码时,报了 (null) entry in command string: null chmod 0644 解决方案下载hadoop.dll文件并拷贝到C:\windows\system ...
【报错笔记】eclipse运行tomcat程序时报错
启动Tomcat服务器报错: Several ports (8005, 8080, 8009) required by Tomcat v5.5 Server at localhost are alre ...
解决Eclipse Pydev中import时报错：Unresolved import
为什么80%的码农都做不了架构师?>>> 场景:(eclipse-sdk 3.2.1) project(watip)下,src folder下存在util ->TooLo ...
gitlab 有master权限提交master时报错
@gitlab 报错 ! [remote rejected] master -> master (pre-receive hook declined) 在工作中遇到一个很奇葩的问题,gitlab ...

eclipse下提交job时报错mapred.JobClient: No job jar file set. User classes may not be found.

eclipse下提交job时报错mapred.JobClient: No job jar file set. User classes may not be found.相关推荐

最新文章

热门文章