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From "Suresh Srinivas (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-1547) Improve decommission mechanism
Date Mon, 20 Dec 2010 23:57:03 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1547?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12973422#action_12973422
] 

Suresh Srinivas commented on HDFS-1547:
---------------------------------------

The way the files are named is confusing. With names such as include and exclude, one would
think they are mutually exclusive.

include file is a list of datanodes in the cluster. Some of the nodes that have problems (access
over ssh is not possible) etc. are excluded from by adding it to exclude list. See HADOOP-442
for details. Naming include file to another name, say datanodes and not the opposite of exclude
would have reduced confusion.

> Improve decommission mechanism
> ------------------------------
>
>                 Key: HDFS-1547
>                 URL: https://issues.apache.org/jira/browse/HDFS-1547
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: name-node
>    Affects Versions: 0.23.0
>            Reporter: Suresh Srinivas
>            Assignee: Suresh Srinivas
>             Fix For: 0.23.0
>
>
> Current decommission mechanism driven using exclude file has several issues. This bug
proposes some changes in the mechanism for better manageability. See the proposal in the next
comment for more details.

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