Can You Tell Is What Will Happen To A Namenode, When Job Tracker Is N

1.	Can You Tell Is What Will Happen To A Namenode, When Job Tracker Is Not Up And Running?
Answer» When the job tracker is down, it will not be in functional MODE, all running jobs will be halted because it is a SINGLE POINT of failure. Your whole cluster will be down but still Namenode will be present. As such the cluster will still be accessible if Namenode is working, EVEN if the job tracker is not up and running. But you cannot run your Hadoop job. When the job tracker is down, it will not be in functional mode, all running jobs will be halted because it is a single point of failure. Your whole cluster will be down but still Namenode will be present. As such the cluster will still be accessible if Namenode is working, even if the job tracker is not up and running. But you cannot run your Hadoop job.

Can You Tell Is What Will Happen To A Namenode, When Job Tracker Is Not Up And Running?

Answer»

When the job tracker is down, it will not be in functional MODE, all running jobs will be halted because it is a SINGLE POINT of failure. Your whole cluster will be down but still Namenode will be present. As such the cluster will still be accessible if Namenode is working, EVEN if the job tracker is not up and running. But you cannot run your Hadoop job.

When the job tracker is down, it will not be in functional mode, all running jobs will be halted because it is a single point of failure. Your whole cluster will be down but still Namenode will be present. As such the cluster will still be accessible if Namenode is working, even if the job tracker is not up and running. But you cannot run your Hadoop job.

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