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Posted to issues@kylin.apache.org by "XiaoXiang Yu (JIRA)" <ji...@apache.org> on 2019/07/03 03:30:00 UTC
[jira] [Commented] (KYLIN-4070) No logs print in kylin.log file and
met error "Error: Could not find or load main class
org.apache.hadoop.mapreduce.v2.app.MRAppMaster"
[ https://issues.apache.org/jira/browse/KYLIN-4070?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16877452#comment-16877452 ]
XiaoXiang Yu commented on KYLIN-4070:
-------------------------------------
Actually JIRA is not suitable for asking question, mailing list will be better place. And I think we don't need to modify kylin.sh, and do you have try execute
{quote}sh bin/find-hive-dependency.sh
{quote}
does hive_dependency be configured correctly?
> No logs print in kylin.log file and met error "Error: Could not find or load main class org.apache.hadoop.mapreduce.v2.app.MRAppMaster"
> ---------------------------------------------------------------------------------------------------------------------------------------
>
> Key: KYLIN-4070
> URL: https://issues.apache.org/jira/browse/KYLIN-4070
> Project: Kylin
> Issue Type: Bug
> Environment: apache-kylin-2.6.2-bin-hbase1x hadoop-2.7.7 hbase-1.2.11 hive-2.3.4
> Reporter: xiangakun
> Priority: Blocker
>
> Hello friends,
>
> I am using kylin with version 2.6.2, and the relied components are lists below, I start the kylin server successfully and met the error "org.apache.kylin.rest.exception.InternalErrorException: org/apache/hadoop/hive/conf/HiveConf" when loading hive meta data. I updated the configuration from "export HBASE_CLASSPATH_PREFIX=${KYLIN_HOME}/conf:${KYLIN_HOME}/lib/*:${KYLIN_HOME}/ext/*:${HBASE_CLASSPATH_PREFIX}" to "export HBASE_CLASSPATH_PREFIX=${KYLIN_HOME}/conf:${KYLIN_HOME}/lib/*:${KYLIN_HOME}/ext/*:{color:#FF0000}${hive_dependency}{color}:${HBASE_CLASSPATH_PREFIX}" in kylin.sh file. it did work fine. However, after this action, I found no more messages could be produced in logs/kylin.log file. I removed kylin.log file, and after restarted the kylin server, kylin.log file was not created any more. It's seems too stange.
> What's more, when I create a cube and build it, the error happens in step 3, it shows "
> Error: Could not find or load main class org.apache.hadoop.mapreduce.v2.app.MRAppMaster".
>
> In fact, I used the same configuration in yarn-site.xml and mapred-site.xml files with kylin version 2.1.0 for a long time, it worked fine and never met such error.
>
> Does anyone meet the same problem before? Hope receive your kindly help soon.
>
> Thanks in advance.
>
> Best Regards
> xiangakun
>
>
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