What Happens To Job Tracker When Namenode Is Down?

1.	What Happens To Job Tracker When Namenode Is Down?
Answer» Namenode is the MAIN POINT which KEEPS all the metadata, keep tracks of FAILURE of datanode with the help of heart beats. As such when a namenode is down, your CLUSTER will be completely down, because Namenode is the single point of failure in a Hadoop Installation. Namenode is the main point which keeps all the metadata, keep tracks of failure of datanode with the help of heart beats. As such when a namenode is down, your cluster will be completely down, because Namenode is the single point of failure in a Hadoop Installation.

Answer»

Namenode is the MAIN POINT which KEEPS all the metadata, keep tracks of FAILURE of datanode with the help of heart beats. As such when a namenode is down, your CLUSTER will be completely down, because Namenode is the single point of failure in a Hadoop Installation.

Namenode is the main point which keeps all the metadata, keep tracks of failure of datanode with the help of heart beats. As such when a namenode is down, your cluster will be completely down, because Namenode is the single point of failure in a Hadoop Installation.

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