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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
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Zhe Zhang commented on HDFS-8849:
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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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