Attila Doroszlai created HADOOP-17365:
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Summary: Contract test for renaming over existing file is too
lenient
Key: HADOOP-17365
URL: https://issues.apache.org/jira/browse/HADOOP-17365
Project: Hadoop Common
Issue Type: Bug
Components: test
Reporter: Attila Doroszlai
Assignee: Attila Doroszlai
{{AbstractContractRenameTest#testRenameFileOverExistingFile}} is too lenient in
its assertions.
* {{FileAlreadyExistsException}} is accepted regardless of "rename overwrites"
and "rename returns false if exists" contract options. I think it should be
accepted only if both of those options are false.
* "rename returns false if exists" option is ignored if the file is not
overwritten by the implementation.
Also, I think the "rename returns false if exists" option is incorrectly
inverted in the test, which it can get away with because the checks are loose.
(Found this while looking at a change in Ozone FS implementation from throwing
exception to returning false. The contract test unexpectedly passed without
changing {{contract.xml}}.)
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