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From "Ming Ma (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-7877) Support maintenance state for datanodes
Date Sat, 07 Mar 2015 01:56:38 GMT

     [ https://issues.apache.org/jira/browse/HDFS-7877?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ming Ma updated HDFS-7877:
--------------------------
    Attachment: HDFS-7877.patch
                Supportmaintenancestatefordatanodes.pdf

Here are the initial design document and draft patch. Appreciate any input others might have.

To support maintenance state, we need to provide admins interface, manage the datanode state
transitions and handle block related operations.

After we agree on the design, we can break the feature into subtasks.

> Support maintenance state for datanodes
> ---------------------------------------
>
>                 Key: HDFS-7877
>                 URL: https://issues.apache.org/jira/browse/HDFS-7877
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>            Reporter: Ming Ma
>         Attachments: HDFS-7877.patch, Supportmaintenancestatefordatanodes.pdf
>
>
> This requirement came up during the design for HDFS-7541. Given this feature is mostly
independent of upgrade domain feature, it is better to track it under a separate jira. The
design and draft patch will be available soon.



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