What is the procedure to recover a NameNode when it is slow?

devquora
devquora

Posted On: Feb 22, 2018

 

In order to recover a NameNode, following steps need to be carried out:

  • Using the file system metadata replica FsImage start a new NameNode.
  • Configure different DataNodes along with the clients in order to make them recognize the newly initiated NameNode.
  • As soon as the new NameNode has completed the checkpoint using FsImage, it will start helping the clients. This is achieved when FsImage has received enough amount of block reports from DataNodes.

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