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From "Lei (Eddy) Xu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-6808) Add command line option to ask DataNode reload configuration.
Date Thu, 18 Sep 2014 22:59:34 GMT

     [ https://issues.apache.org/jira/browse/HDFS-6808?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Lei (Eddy) Xu updated HDFS-6808:
--------------------------------
    Attachment: HDFS-6808.009.patch

Hey [~cmccabe] Thanks for your quick response. I've changed the patch based on the most of
your comments.

bq. How about calling this "key" to be more consistent with our other config stuff?

I think "name" might be better since it is used in the xml configuration files and aligned
with the existing reconfiguration framework (i.e., in {{PropertyChange}}).

> Add command line option to ask DataNode reload configuration.
> -------------------------------------------------------------
>
>                 Key: HDFS-6808
>                 URL: https://issues.apache.org/jira/browse/HDFS-6808
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: datanode
>    Affects Versions: 2.5.0
>            Reporter: Lei (Eddy) Xu
>            Assignee: Lei (Eddy) Xu
>         Attachments: HDFS-6808.000.combo.patch, HDFS-6808.000.patch, HDFS-6808.001.combo.patch,
HDFS-6808.001.patch, HDFS-6808.002.combo.patch, HDFS-6808.002.patch, HDFS-6808.003.combo.txt,
HDFS-6808.003.patch, HDFS-6808.004.combo.patch, HDFS-6808.004.patch, HDFS-6808.005.combo.patch,
HDFS-6808.005.patch, HDFS-6808.006.combo.patch, HDFS-6808.006.patch, HDFS-6808.007.combo.patch,
HDFS-6808.007.patch, HDFS-6808.008.combo.patch, HDFS-6808.008.patch, HDFS-6808.009.combo.patch,
HDFS-6808.009.patch
>
>
> The workflow of dynamically changing data volumes on DataNode is
> # Users manually changed {{dfs.datanode.data.dir}} in the configuration file
> # User use command line to notify DN to reload configuration and updates its volumes.

> This work adds command line support to notify DN to reload configuration.



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