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From "Tanping Wang (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, 03 May 2011 18:27:03 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1773?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13028360#comment-13028360
] 

Tanping Wang commented on HDFS-1773:
------------------------------------

The failed core test cases are irrelevant to this patch.   Among them,
 
org.apache.hadoop.hdfs.server.namenode.TestBackupNode
org.apache.hadoop.hdfs.TestDatanodeBlockScanner
org.apache.hadoop.hdfs.TestDFSStorageStateRecovery
org.apache.hadoop.hdfs.TestFileConcurrentReader

are also seen failing with other just posted patches.

org.apache.hadoop.hdfs.TestInjectionForSimulatedStorage
org.apache.hadoop.hdfs.TestReadWhileWriting

I run them manually and they are passing. 

> 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, 0.23.0
>         Environment: branch-20-security and trunk.
>            Reporter: Tanping Wang
>            Assignee: Tanping Wang
>            Priority: Minor
>             Fix For: 0.20.204.0, 0.23.0
>
>         Attachments: HDFS-1773-2.patch, HDFS-1773-3.patch, HDFS-1773.patch, HDFS-1867.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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