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Date: Mon, 3 Aug 2015 20:34:04 +0000 (UTC)
From: "Zhe Zhang (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
Message-ID: <JIRA.12851196.1438632177000.359364.1438634044700@Atlassian.JIRA>
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 <JIRA.12851196.1438632177583@arcas>
Subject: [jira] [Commented] (HDFS-8849) fsck should report number of missing
 blocks with replication factor 1
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    [ https://issues.apache.org/jira/browse/HDFS-8849?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14652451#comment-14652451 ] 

Zhe Zhang commented on HDFS-8849:
---------------------------------

I guess the motivation is the same as HDFS-7165. A replication factor of 1 indicates the data is "disposable". So when checking {{fsck}} on a directory the user might want to separately consider this metric (e.g., less alarmed about the number of disposable data that's missing).

> fsck should report number of missing blocks with replication factor 1
> ---------------------------------------------------------------------
>
>                 Key: HDFS-8849
>                 URL: https://issues.apache.org/jira/browse/HDFS-8849
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: tools
>    Affects Versions: 2.7.1
>            Reporter: Zhe Zhang
>            Assignee: Zhe Zhang
>            Priority: Minor
>
> HDFS-7165 supports reporting number of blocks with replication factor 1 in {{dfsadmin}} and NN metrics. But it didn't extend {{fsck}} with the same support, which is the aim of this JIRA.


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