org.apache.hadoop.mapred.YarnChild: Exception running child : java.lang.RuntimeException:

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    org.apache.hadoop.mapred.YarnChild: Exception running child : java.lang.RuntimeException:
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    Stack Overflow | 1 year ago | Ajay
    org.apache.hadoop.mapred.YarnChild: Exception running child : java.lang.RuntimeException: java.lang.ClassNotFoundException: Class /user/Ajay/rad_unzip/DecompressMapper.class not found
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    ***Version Spring XD Version : spring-xd-1.3.0.RELEASE, spring-xd-1.3.0.RELEASE-yarn OS & Version: Linux 2.6.32-431.29.2.el6.x86_64 Java Version: java version "1.7.0_65" ***Description The batch-hashtag-count example from spring-xd-samples ran using spring xd is failing with inline error message. ***Steps to recreate the problem 1. Followed steps present in README.asciidoc present at the Git repository link given below https://github.com/spring-projects/spring-xd-samples/tree/master/batch-hashtag-count ***Describe XD Deployment : Distributed Deployment Type : Distributed - YARN ( on AWS EC2 cloud ) Number of xd-admin’s and xd-container’s : 1 Admin and 3 Containers ***Describe Other Components Transport: Redis 3.0.1 ZooKeeper: Version 3.4.6.2.3.2.0-2950 Hadoop deployment Data Platform : Hortonworks HDP 2.3.2.0-2950 RDBMS: MySQL ***Error Message: ***************************************************** 2015-11-23 17:56:16,527 WARN [main] org.apache.hadoop.mapred.YarnChild: Exception running child : java.lang.RuntimeException: java.lang.ClassNotFoundException: Class or g.springframework.xd.examples.hadoop.HashtagCount$TokenizerMapper not found at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2195) at org.apache.hadoop.mapreduce.task.JobContextImpl.getMapperClass(JobContextImpl.java:186) at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:745) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341) at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:164) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:422) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657) at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:158) Caused by: java.lang.ClassNotFoundException: Class org.springframework.xd.examples.hadoop.HashtagCount$TokenizerMapper not found at org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:2101) at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2193) ... 8 more *****************************************************

    Spring JIRA | 1 year ago | Nachiket Bondale
    org.apache.hadoop.mapred.YarnChild: Exception running child : java.lang.RuntimeException: java.lang.ClassNotFoundException: Class or g.springframework.xd.examples.hadoop.HashtagCount$TokenizerMapper not found
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    ***Version Spring XD Version : spring-xd-1.3.0.RELEASE, spring-xd-1.3.0.RELEASE-yarn OS & Version: Linux 2.6.32-431.29.2.el6.x86_64 Java Version: java version "1.7.0_65" ***Description The batch-hashtag-count example from spring-xd-samples ran using spring xd is failing with inline error message. ***Steps to recreate the problem 1. Followed steps present in README.asciidoc present at the Git repository link given below https://github.com/spring-projects/spring-xd-samples/tree/master/batch-hashtag-count ***Describe XD Deployment : Distributed Deployment Type : Distributed - YARN ( on AWS EC2 cloud ) Number of xd-admin’s and xd-container’s : 1 Admin and 3 Containers ***Describe Other Components Transport: Redis 3.0.1 ZooKeeper: Version 3.4.6.2.3.2.0-2950 Hadoop deployment Data Platform : Hortonworks HDP 2.3.2.0-2950 RDBMS: MySQL ***Error Message: ***************************************************** 2015-11-23 17:56:16,527 WARN [main] org.apache.hadoop.mapred.YarnChild: Exception running child : java.lang.RuntimeException: java.lang.ClassNotFoundException: Class or g.springframework.xd.examples.hadoop.HashtagCount$TokenizerMapper not found at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2195) at org.apache.hadoop.mapreduce.task.JobContextImpl.getMapperClass(JobContextImpl.java:186) at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:745) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341) at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:164) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:422) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657) at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:158) Caused by: java.lang.ClassNotFoundException: Class org.springframework.xd.examples.hadoop.HashtagCount$TokenizerMapper not found at org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:2101) at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2193) ... 8 more *****************************************************

    Spring JIRA | 1 year ago | Nachiket Bondale
    org.apache.hadoop.mapred.YarnChild: Exception running child : java.lang.RuntimeException: java.lang.ClassNotFoundException: Class or g.springframework.xd.examples.hadoop.HashtagCount$TokenizerMapper not found
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    nabble.com | 3 months ago
    org.apache.hadoop.mapred.YarnChild: Exception running child : java.lang.RuntimeException: java.lang.ClassNotFoundException: Class org.apache.hive.hcatalog.mapreduce.HCatInputFormat not found

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    Root Cause Analysis

    1. java.lang.ClassNotFoundException

      Class org.apache.hadoop.example.QuasiMonteCarlo$QmcMapper not found

      at org.apache.hadoop.conf.Configuration.getClassByName()
    2. Hadoop
      Configuration.getClass
      1. org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:1801)
      2. org.apache.hadoop.conf.Configuration.getClass(Configuration.java:1893)
      2 frames
    3. Hadoop
      YarnChild$2.run
      1. org.apache.hadoop.mapreduce.task.JobContextImpl.getMapperClass(JobContextImpl.java:196)
      2. org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:722)
      3. org.apache.hadoop.mapred.MapTask.run(MapTask.java:340)
      4. org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:168)
      4 frames
    4. Java RT
      Subject.doAs
      1. java.security.AccessController.doPrivileged(Native Method)
      2. javax.security.auth.Subject.doAs(Subject.java:415)
      2 frames
    5. Hadoop
      UserGroupInformation.doAs
      1. org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1548)
      1 frame
    6. Hadoop
      YarnChild.main
      1. org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:163)
      1 frame