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Posted to issues@hbase.apache.org by "Jonathan Hsieh (JIRA)" <ji...@apache.org> on 2013/05/11 00:55:16 UTC
[jira] [Commented] (HBASE-8528) [hadoop2] TestMultiTableInputFormat
always fails on hadoop with YARN-129 applied
[ https://issues.apache.org/jira/browse/HBASE-8528?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13654983#comment-13654983 ]
Jonathan Hsieh commented on HBASE-8528:
---------------------------------------
Somehow the simplification of the yarn classpaths in YARN-129 doesn't include as much as before. So we add unit tests's classpath into to the yarn.application.classpath so that the spawned children have the MR2 jars necessary to run.
> [hadoop2] TestMultiTableInputFormat always fails on hadoop with YARN-129 applied
> --------------------------------------------------------------------------------
>
> Key: HBASE-8528
> URL: https://issues.apache.org/jira/browse/HBASE-8528
> Project: HBase
> Issue Type: Sub-task
> Components: hadoop2, mapreduce, test
> Affects Versions: 0.95.0
> Reporter: Jonathan Hsieh
> Assignee: Jonathan Hsieh
> Fix For: 0.98.0, 0.95.1
>
> Attachments: hbase-8528.patch
>
>
> TestMulitTableInputFormat always fails if YARN-129 is applied. Its error message isn't useful (assertion failed) -- but if you look at the stderr/stdout/syslog files of the jobs in hbase-server/target/org.apache.hadoop.mapred.MiniMRCluster* (minicluster data dirs) you'll find this class not found exception:
> {code}
> Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/hadoop/mapreduce/v2/app/MRAppMaster
> Caused by: java.lang.ClassNotFoundException: org.apache.hadoop.mapreduce.v2.app.MRAppMaster
> at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
> Could not find the main class: org.apache.hadoop.mapreduce.v2.app.MRAppMaster. Program will exit.
> {code}
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