how to update config parameter of hadoop mapred-site.xml without restarting the cluster

hadoop

Solution

You can set this per-job in your job's configuration. If you want to change this behaviour globally you have to restart your cluster. There is no way to change it without restarting.

Problem

I would like to add/update the following parameter ``` <property> <name>mapred.map.tasks.speculative.execution</name> <value>false</value> </property> ``` in mapred-site.xml in hadoop. How can I do this without restarting the cluster?

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