Could not format the Namenode in hadoop

Question

While formatting namenode by executing the command " bin/hadoop namenode -format " i get this error:

hduser@ubuntu:~/hadoop/bin$ ./hadoop namenode -format DEPRECATED: Use of this script to execute hdfs command is deprecated. Instead use the hdfs command for it.

Error : Could not find or load main class org.apache.hadoop.hdfs.server.namenode.NameNode

Do you export HADOOP_HOME correctly in your ~/.bashrc? – Masoud Sagharichian Oct 10 '16 at 14:14 — Masoud Sagharichian, Oct 10 '16 at 14:14

score 1 · Answer 1 · answered Oct 11 '16 at 23:23

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try removing all hadoop temp data rm -Rf /app/hadoop/tmp/* then try again formatting

answered Oct 11 '16 at 23:23

matesio

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score 0 · Answer 2 · answered Oct 10 '16 at 14:00

0

It means that you should not use hadoop namenode -format but hdfs namenode -format instead, since it has been deprecated.

answered Oct 10 '16 at 14:00

Navarro

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score 0 · Answer 3 · answered Oct 10 '16 at 14:06

0

Does it work?

 ~/hadoop/bin/hdfs namenode -format

answered Oct 10 '16 at 14:06

Kacper

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Could not format the Namenode in hadoop

3 Answers3