Kihwal Lee created HDFS-4993:
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Summary: fsck can fail if a file is renamed or deleted
Key: HDFS-4993
URL: https://issues.apache.org/jira/browse/HDFS-4993
Project: Hadoop HDFS
Issue Type: Bug
Affects Versions: 0.23.9, 2.1.0-beta
Reporter: Kihwal Lee
In NamenodeFsck#check(), the getListing() and getBlockLocations() are not
synchronized, so the file deletions or renames at the right moment can cause
FileNotFoundException and failure of fsck.
Instead of failing, fsck should continue. Optionally it can record file system
modifications it encountered, but since most modifications during fsck are not
detected, there might be little value in recording these specifically.
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