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From "Tsz Wo (Nicholas), SZE (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-1773) Remove a datanode from cluster if include list is not empty and this datanode is removed from both include and exclude lists
Date Tue, 22 Mar 2011 17:33:05 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1773?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13009731#comment-13009731
] 

Tsz Wo (Nicholas), SZE commented on HDFS-1773:
----------------------------------------------

In {{removeDecomNodeFromDeadList(..)}},
- remove public.
- {{hostsReader.getHosts()}} is independent of the nodes.  If it is empty, {{removeDecomNodeFromDeadList(..)}}
can return immediately.  So we should check it before the loop.
- {{fsn}} is not a parameter.
{code}
+   * @param fsn, FSNamesystem
{code}

> Remove a datanode from cluster if include list is not empty and this datanode is removed
from both include and exclude lists
> ----------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-1773
>                 URL: https://issues.apache.org/jira/browse/HDFS-1773
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>    Affects Versions: 0.20.203.1
>         Environment: branch-20-security
>            Reporter: Tanping Wang
>            Assignee: Tanping Wang
>            Priority: Minor
>             Fix For: 0.20.4
>
>         Attachments: HDFS-1773-2.patch, HDFS-1773.patch
>
>
> Our service engineering team who operates the clusters on a daily basis founds it is
confusing that after a data node is decommissioned, there is no way to make the cluster forget
about this data node and it always remains in the dead node list.

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