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From "Zhe Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8872) Reporting of missing blocks is different in fsck and namenode ui/metasave
Date Wed, 26 Apr 2017 18:17:04 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8872?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15985295#comment-15985295
] 

Zhe Zhang commented on HDFS-8872:
---------------------------------

Linked HDFS-10495.

> Reporting of missing blocks is different in fsck and namenode ui/metasave
> -------------------------------------------------------------------------
>
>                 Key: HDFS-8872
>                 URL: https://issues.apache.org/jira/browse/HDFS-8872
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 2.6.0
>            Reporter: Rushabh S Shah
>            Assignee: Rushabh S Shah
>
> Namenode ui and metasave will not report a block as missing if the only replica is on
decommissioning/decomissioned node while fsck will show it as MISSING.
> Since decommissioned node can be formatted/removed anytime, we can actually lose the
block.
> Its better to alert on namenode ui if the only copy is on decomissioned/decommissioning
node.



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