Tsz Wo (Nicholas), SZE created HDFS-4258:
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Summary: Rename of Being Written Files
Key: HDFS-4258
URL: https://issues.apache.org/jira/browse/HDFS-4258
Project: Hadoop HDFS
Issue Type: Bug
Components: hdfs-client, namenode
Reporter: Tsz Wo (Nicholas), SZE
When a being written file or it's ancestor directories is renamed, the path in
the file lease is also renamed. Then the writer of the file usually will fail
since the file path in the writer is not updated.
Moreover, I think there is a bug as follow:
# Client writes 0's to F_0="/foo/file" and writes 1's to F_1="/bar/file" at the
same time.
# Rename /bar to /baz
# Rename /foo to /bar
Then, writing to F_0 will fail since /foo/file does not exist anymore but
writing to F_2 may succeed since /bar/file exits as a different file. In such
case, the content of /bar/file could be partly 0's and partly 1's.
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