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From "Uma Maheswara Rao G (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-11284) [SPS]: Avoid running SPS under safemode and fix issues in target node choosing.
Date Fri, 30 Dec 2016 23:20:58 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11284?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15788537#comment-15788537
] 

Uma Maheswara Rao G commented on HDFS-11284:
--------------------------------------------

[~yuanbo], Thank you for raising the JIRA. Can you provide more details on #2 and #3 ? 

> [SPS]: Avoid running SPS under safemode and fix issues in target node choosing.
> -------------------------------------------------------------------------------
>
>                 Key: HDFS-11284
>                 URL: https://issues.apache.org/jira/browse/HDFS-11284
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: datanode, namenode
>            Reporter: Yuanbo Liu
>            Assignee: Yuanbo Liu
>
> Recently I've found in some conditions, SPS is not stable:
> * SPS runs under safe mode.
> * There're some overlap nodes in the chosen target nodes.
> * The real replication number of block doesn't match the replication factor. For example,
the real replication is 2 while the replication factor is 3.



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