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https://issues.apache.org/jira/browse/HDFS-4955?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Suresh Srinivas resolved HDFS-4955.
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Resolution: Duplicate
Duplicate of HDFS-4667
> Use InodeID to improve snapshot diff
> ------------------------------------
>
> Key: HDFS-4955
> URL: https://issues.apache.org/jira/browse/HDFS-4955
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Binglin Chang
>
> Currently snapshot diff doesn't handle file/dir rename very well, so distcp
> can't do minimal data transfer in incremental backup. Using InodeID can
> uniquely identify a file, and can help diff search algorithm.
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