cnauroth commented on pull request #3391:
URL: https://github.com/apache/hadoop/pull/3391#issuecomment-916495654
```
Path dir = path("testMkDirRmDirUnicode/dir-\\U0001f63b");
```
Something looks off with the test. That looks like `\\U`, so the
double-slash escapes to just one slash, followed by the rest of the string
literal. A Unicode character escape needs `\u` (single slash followed by
lower-case u).
Still, I tried changing the test locally to use a Unicode escape, and I
still couldn't reproduce a failure.
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