hadoopnamenode

Does the memory requirements for secondary Namenode is in the same range as that of Namenode? in hadoop

I am working with hadoop, little bit curious about the memory requirements for secondary namenode... as compared with Namenode

Solution

  • They should be identical if you want a highly available system. If you don't need high availability, and you are using a secondary node as a secondary node then you could reduce the requirements but I'd think in production you would not want that. It also would not enable you to make good predictions about performance.