Fetch failures if used ephemeral port for property "mapreduce.shuffle.port".
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Key: MAPREDUCE-3211
URL: https://issues.apache.org/jira/browse/MAPREDUCE-3211
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: job submission, mrv2
Affects Versions: 0.24.0
Environment: Linux
Reporter: Prashant Sharma
Assignee: Prashant Sharma
Fix For: 0.24.0
To reproduce the bug.
Use the following property in mapred-site.xml
<configuration>
<property>
<name> mapreduce.framework.name</name>
<value>yarn</value>
</property>
<property>
<name> mapreduce.shuffle.port</name>
<value>0</value>
</property>
</configuration>
and following in yarn-site.xml
<property>
<name>yarn.nodemanager.aux-services</name>
<value>mapreduce.shuffle</value>
<description>shuffle service that needs to be set for Map Reduce to run
</description>
</property>
<property>
<name>yarn.nodemanager.aux-services.mapreduce.shuffle.class</name>
<value>org.apache.hadoop.mapred.ShuffleHandler</value>
</property>
Then try to start the yarn daemons.
And submit the job. (which would eventually fail).
Also observe NM logs. It says shuffle handler service started at port 0; :P
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