[jira] [Created] (HDFS-12957) Multi master name node

["Andrew Schiefelbein (JIRA)" <ji...@apache.org>]

Andrew Schiefelbein created HDFS-12957:
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             Summary: Multi master name node
                 Key: HDFS-12957
                 URL: https://issues.apache.org/jira/browse/HDFS-12957
             Project: Hadoop HDFS
          Issue Type: Wish
          Components: namenode
    Affects Versions: 3.0.0
         Environment: Multi node high availability with high throughput
            Reporter: Andrew Schiefelbein


While I do appreciate that the HA and federated setups do take care of some of the issues running in a multi node distributed fault tolerant way I believe that a singe name node is a bit of a pain point for me.

My wish, and your mileage may vary, is that here could be a name node on each data node system so that each system could act as a gateway and worker for the cluster.

In my tests right now I can push nearly 2 million records / second through a single node instance, but when I bring up 4 more nodes it doesn't go 4x faster as it has to retrieve from the name node and go through it as a gateway to the cluster.  For speed and resiliency if this could be spread out among n number of nodes and put behind a load balancer it would be the ideal solution for distributed resilient and high throughput shared storage. 



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