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From "Todd Lipcon (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-2591) HA: MiniDFSCluster support to mix and match federation with HA
Date Thu, 24 Nov 2011 04:49:40 GMT

     [ https://issues.apache.org/jira/browse/HDFS-2591?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Todd Lipcon updated HDFS-2591:
------------------------------

    Attachment: hdfs-2591.txt

Attached patch introduces a new MiniDFSNNTopology class which is used to describe the layout
of NNs in the cluster. Most unit tests are passing, including those that make federated miniclusters.
(ran tests with this applied on top of HDFS-2582, though it may also work without that patch)
                
> HA: MiniDFSCluster support to mix and match federation with HA
> --------------------------------------------------------------
>
>                 Key: HDFS-2591
>                 URL: https://issues.apache.org/jira/browse/HDFS-2591
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ha, test
>    Affects Versions: HA branch (HDFS-1623)
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>         Attachments: hdfs-2591.txt
>
>
> Right now the MiniDFS builder is somewhat inflexible - it just takes a "numNameNodes"
parameter, which is used to specify federated nameservices. In order to add HA support, we
need to be able to be more specific when configuring the NNs -- eg to test the case where
there is one nameservice that is HA and another which is not.

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