Github user greghogan commented on the issue:
https://github.com/apache/flink/pull/2539
These are temporary files automatically deleted by the client. To handle
paths with leading dashes one can prefix with a directory (`vi ./-44.txt`) or
place after a double dash (`vi -- -44.txt`).
This looks to me like a safe change (I'd first question why we're prefixing
with a random string when Java is doing the same in `File.createTempFile`). On
the other hand, this isn't fixing an error and there are limitless ways to
refactor the existing codebase. And fortunately the anti-pattern is well-known.
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