Andrew Wang created HDFS-5709:
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Summary: Improve upgrade with existing files and directories named
".snapshot"
Key: HDFS-5709
URL: https://issues.apache.org/jira/browse/HDFS-5709
Project: Hadoop HDFS
Issue Type: Improvement
Components: namenode
Affects Versions: 2.2.0, 3.0.0
Reporter: Andrew Wang
Right now in trunk, upgrade fails messily if the old fsimage or edits refer to
a directory named ".snapshot". We should at least print a better error message
(which I believe was the original intention in HDFS-4666), and [~atm] proposed
automatically renaming these files and directories.
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