shunping commented on issue #21140:
URL: https://github.com/apache/beam/issues/21140#issuecomment-1817092946
I am not able to reproduce the original issue reported here, but I do find
something interesting about the logic we implemented in Java.
Basically, given a pattern (with wildcards or not), we will **first** check
if there is a file name that matches exactly on the pattern (without any
expansion). In other words, if there is a file named`*.txt` in the folder to
match and we are trying to match a pattern `*.txt`, then only this file will be
returned.
If there is no such an exact match, we then consider it as a glob pattern
and match it using the glob syntax with
an api in `java.nio.FileSystem`.
Notice that, in the second mode, "*" and "?" can be escaped by surrounding
it with a pair of square brackets.
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