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From "Suresh Srinivas (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HDFS-1547) Improve decommission mechanism
Date Thu, 13 Jan 2011 22:22:49 GMT

     [ https://issues.apache.org/jira/browse/HDFS-1547?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Suresh Srinivas updated HDFS-1547:
----------------------------------

    Attachment: HDFS-1547.2.patch

Attached patch fixes the following:
# Cluster stats updates had a bug. Thanks Todd for pointing it out. I have fixed it and added
tests to check this.
# Node removed from include file was not being shutdown. I added this functionality back and
added a test to test this.
# Decommissioning/decommissioned update the stats as given below:
#* Node used capacity is counted towards cluster used capacity.
#* Node capacity is not counted towards the cluster capacity. Only node used capacity is used
counted towards cluster capacity.
#* Node capacity remaining is not counted towards cluster capacity remaining.
# Cleaned up TestDecommission and moved it to junit4.

> 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
>
>         Attachments: HDFS-1547.1.patch, HDFS-1547.2.patch, HDFS-1547.patch, show-stats-broken.txt
>
>
> 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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