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From "Eli Collins (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-2758) HA: multi-process MiniDFSCluster for testing ungraceful NN shutdown
Date Fri, 06 Jan 2012 01:01:56 GMT

     [ https://issues.apache.org/jira/browse/HDFS-2758?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Eli Collins updated HDFS-2758:
------------------------------

    Summary: HA: multi-process MiniDFSCluster for testing ungraceful NN shutdown  (was: HA:
multi-process MiniDFS cluster for testing ungraceful shutdown)
    
> HA: multi-process MiniDFSCluster for testing ungraceful NN shutdown
> -------------------------------------------------------------------
>
>                 Key: HDFS-2758
>                 URL: https://issues.apache.org/jira/browse/HDFS-2758
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ha, test
>    Affects Versions: HA branch (HDFS-1623)
>            Reporter: Eli Collins
>            Assignee: Eli Collins
>
> We should test ungraceful termination of NN processes, this is generally useful for HDFS
testing, but particularly needed for HA since we may do this as via fencing (send a NN a SIGILL
via ssh kill -9, flip the PDU, etc). We can't currently do this with the MiniDFSCluster since
everything is in one process and killing the native thread hosting the java thread terminates
the whole process.

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