How to restart NameNode or all the daemons in Hadoop?
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What are the Different ways to restart NameNode in Hadoop?
What is best way to restart all the daemons in Hadoop?
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To start NameNode in Hadoop –
First stop
$HADOOP_HOME/bin/stop.dfs.sh
$HADOOP_HOME/bin/hadoop-daemon.sh stop namenode
Then start again
$HADOOP_HOME/bin/start.dfs.sh
$HADOOP_HOME/bin/hadoop-daemon.sh start namenode
To restart all daemons use the following command which deprecated
$HADOOP_HOME/bin/stop.all.sh
$HADOOP_HOME/bin/start.all.sh
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