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From "Vishva (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-9555) Yarn Docs : single cluster yarn setup - Step 1 configure parameters - multiple roots
Date Wed, 15 May 2019 02:52:00 GMT
Vishva created YARN-9555:
----------------------------

             Summary: Yarn Docs : single cluster yarn setup - Step 1 configure parameters
- multiple roots
                 Key: YARN-9555
                 URL: https://issues.apache.org/jira/browse/YARN-9555
             Project: Hadoop YARN
          Issue Type: Bug
          Components: yarn
    Affects Versions: 3.0.2
            Reporter: Vishva


Step 1 for [https://hadoop.apache.org/docs/r3.2.0/hadoop-project-dist/hadoop-common/SingleCluster.html#YARN_on_Single_Node]
 
Configure parameters as follows:

{{etc/hadoop/mapred-site.xml}}:
 
<configuration>
    <property>
        <name>mapreduce.framework.name</name>
        <value>yarn</value>
    </property>
</configuration>

<configuration>
    <property>
        <name>mapreduce.application.classpath</name>
        <value>$HADOOP_MAPRED_HOME/share/hadoop/mapreduce/*:$HADOOP_MAPRED_HOME/share/hadoop/mapreduce/lib/*</value>
    </property>
</configuration>

but setting this will throw an error when running yarn : 

{color:#6a9955}2019-05-14{color} {color:#6a9955}16:32:05,815{color} {color:#ce9178}ERROR{color}
{color:#569cd6}org.apache.hadoop.conf.Configuration{color}{color:#d4d4d4}: error parsing conf
{color}{color:#569cd6}mapred-site.xml{color}
{color:#ce9178}com.ctc.wstx.exc.WstxParsingException{color}{color:#d4d4d4}: Illegal to have
multiple roots (start tag in epilog?).{color}This should be modified to 

{code:java}
<configuration> 
<property> 
<name>mapreduce.framework.name</name> 
<value>yarn</value> 
</property> 
<property> 
<name>mapreduce.application.classpath</name> 
<value>$HADOOP_MAPRED_HOME/share/hadoop/mapreduce/*:$HADOOP_MAPRED_HOME/share/hadoop/mapreduce/lib/*</value>

</property> 
</configuration>{code}



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