Update to mapred-default.xml not visible in web UI configuration
I have an Apache Kylin container running in docker. I was getting a Java heap space error in map reduce phase so I tried updating some parameters in Hadoop mapred-default.xml file. After making the changes, I restarted the container but, when I go to Yarn ResourceManager Web UI and then to Configuration:
An xml file is opened, looking like this:
However my new values for the properties that I set inside the mapred-default.xml are not here, it is showing the old values for those properties... Does anyone have any idea why that is happening and what I should do to make it register the new values? I tried restarting the container, but it didn't help...
To override a default value for a property, specify the new value within the tags, inside mapred-site.xml not mapred-default.xml, using the following format:
<property>
<name>mapreduce.map.memory.mb</name>
<value>1024</value>
</property>
Be sure restart yarn after reconfigure by stop-yarn.sh and start-yarn.sh.
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