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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 Tue, 29 Nov 2011 21:21:39 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-v3.txt

Small update to fix some unit test failures discovered when testing this patch against the
tip of branch:
- add a toString method to ConfiguredNNAddress (helpful when debugging)
- change {{addNameNode}} to fail when trying to add a NN to a minicluster which wasn't set
up as federated (to fix failure of TestDatanodeMultipleRegistrations)
- fix TestDatanodeMulitipleBlockScanner to use the DN's old configuration when refreshing
it

Fairly trivial delta between the two, so I'll commit unless there's any comment in the next
few hours.
                
> 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-v2.txt, hdfs-2591-v3.txt, 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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