Lukas Majercak created HDFS-11713:
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Summary: Use MoveFileEx to allow renaming a file when the
destination exists
Key: HDFS-11713
URL: https://issues.apache.org/jira/browse/HDFS-11713
Project: Hadoop HDFS
Issue Type: Bug
Components: hdfs, native, rolling upgrades
Affects Versions: 3.0.0-alpha2, 3.0.0-alpha1, 2.7.3, 2.7.1
Reporter: Lukas Majercak
Assignee: Lukas Majercak
Fix For: 3.0.0-alpha2
The {{NativeIO.c#renameTo0}} currently uses {{MoveFile}} Windows system call,
which fails when renaming a file to a destination that already exists.
This makes the {{TestRollingUpgrade.testRollback}} test fail on Windows, as
during that execution, a DataNode tries to rename block's meta file to a
destination that exists.
The proposal is to change to using {{MoveFileEx}} Windows call, and passing in
{{MOVEFILE_REPLACE_EXISTING}} flag to force the renaming.
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