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How to restart NameNode or all the daemons in Hadoop HDFS?
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Answer / Jagdeep Kumar
To restart NameNode, run the command 'hadoop-daemon.sh sbb stop' followed by 'hadoop-daemon.sh sbb start'. To restart all the daemons, run the command 'sbin/start-all.sh'. You can also use 'jps' to check if all the daemons are running.
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