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https://issues.apache.org/jira/browse/HDFS-4895?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13678627#comment-13678627
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Junping Du commented on HDFS-4895:
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Hi Colin, this is also a option. However, IMO, balancer is more to address the
balanced distribution of data, and its algorithm now is to match aboveAvg node
with underAvg node and then scan blocks on specific nodes rather than scan all
blocks in HDFS or under specific directory. fsck may more suitable as its
responsibility is to scan all blocks under specific directory, check block
replica robust status, and report corrupt ones. Thoughts?
> Add a function of "-fixmisplaced" to fsck for fixing blocks in mistaken placed
> ------------------------------------------------------------------------------
>
> Key: HDFS-4895
> URL: https://issues.apache.org/jira/browse/HDFS-4895
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: namenode
> Reporter: Junping Du
> Assignee: Junping Du
> Labels: BlockPlacementPolicy
>
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