Binglin Chang created HDFS-4955:
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Summary: 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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