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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