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https://issues.apache.org/jira/browse/AMBARI-22916?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Siddharth Wagle updated AMBARI-22916:
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Reporter: Paul Codding (was: Siddharth Wagle)
> BE: Support Name Federation in Ambari
> -------------------------------------
>
> Key: AMBARI-22916
> URL: https://issues.apache.org/jira/browse/AMBARI-22916
> Project: Ambari
> Issue Type: Epic
> Components: ambari-server
> Affects Versions: 2.7.0
> Reporter: Paul Codding
> Assignee: Siddharth Wagle
> Priority: Critical
> Fix For: 2.7.0
>
>
> We are pulling in Name Node federation support in HDFS/HDP 3.0 urgently,
> however, all our customers requires Ambari support for NN Federation. This is
> a major pain point for many customers and is part of PayPal's get well plan
> as well will be required for the large Daimler's deal.
> Details
> ======
> What NN federation allows is to share the Data Nodes between a set of
> independent Name Nodes. Each NN has its own standby and has the meta-data
> pointing to the blocks in the data nodes, however, they might share the Data
> Nodes. This will let us scale to 250M files for each NN and add more NNs as
> we go beyond 250M files.
> Ambari support will be required to make sure we can manage and configure NN
> federation.
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