hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Tsz Wo Nicholas Sze (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8204) Mover/Balancer should not schedule two replicas to the same DN
Date Thu, 23 Apr 2015 18:34:41 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8204?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14509560#comment-14509560
] 

Tsz Wo Nicholas Sze commented on HDFS-8204:
-------------------------------------------

Just found that you updated the summary.  So the bug is only in scheduling but it does not
decease the number of replicas.  Then, it is the same as HDFS-8147.

> Mover/Balancer should not schedule two replicas to the same DN
> --------------------------------------------------------------
>
>                 Key: HDFS-8204
>                 URL: https://issues.apache.org/jira/browse/HDFS-8204
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: balancer & mover
>            Reporter: Walter Su
>            Assignee: Walter Su
>         Attachments: HDFS-8204.001.patch
>
>
> Balancer moves blocks between Datanode(Ver. <2.6 ).
> Balancer moves blocks between StorageGroups ( introduced by HDFS-6584) , in the new version(Ver.
>=2.6) .
> function
> {code}
> class DBlock extends Locations<StorageGroup>
> DBlock.isLocatedOn(StorageGroup loc)
> {code}
> is flawed, may causes 2 replicas ends in same node after running balance.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message