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https://issues.apache.org/jira/browse/HDFS-12811?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16251961#comment-16251961
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Rushabh S Shah commented on HDFS-12811:
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Our monitoring system or operations team runs periodic fsck command on root
directory couple of times a day.
This improvement will be helpful in that cases.
> A cheaper, faster, less memory intensive Hadoop fsck
> ----------------------------------------------------
>
> Key: HDFS-12811
> URL: https://issues.apache.org/jira/browse/HDFS-12811
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namenode
> Reporter: Rushabh S Shah
> Assignee: Rushabh S Shah
>
> A cheaper, faster, less memory intensive, approach is eliminate the traversal
> by directly scanning the inode table.
> A side-effect is paths would be scanned and displayed in a random order. A
> new option, ex. "-direct" or "-fast", would likely be required to avoid
> compatibility issues.
> PS: This enhancement is valid only if the path is root directory {{/}}
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