[jira] [Updated] (HDFS-1703) HDFS federation: Improve start/stop scripts and add script to decommission datanodes

["Eli Collins (Updated) (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HDFS-1703?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Eli Collins updated HDFS-1703:
------------------------------

    Release Note: The masters file is no longer used to indicate which hosts to start the 2NN on. The 2NN is now started on hosts when dfs.namenode.secondary.http-address is configured with a non-wildcard IP.
    Hadoop Flags: Incompatible change,Reviewed  (was: Reviewed)

Marking as incompatible and adding a release note.
                
> HDFS federation: Improve start/stop scripts and add script to decommission datanodes
> ------------------------------------------------------------------------------------
>
>                 Key: HDFS-1703
>                 URL: https://issues.apache.org/jira/browse/HDFS-1703
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: scripts
>    Affects Versions: Federation Branch
>            Reporter: Tanping Wang
>            Assignee: Tanping Wang
>            Priority: Minor
>             Fix For: Federation Branch, 0.23.0
>
>         Attachments: HDFS-1703.patch
>
>
> This Jira covers two issues:
> # Startup scripts should start namenodes, secondary namenodes and datanodes on hosts retunred by getConfig (new feature).  This patch is spread out to both common(HADOOP-7179) and hdfs (this Jira).  
> # Decommission script to decommission datanodes

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