Github user zentol commented on a diff in the pull request:
https://github.com/apache/flink/pull/5459#discussion_r167831341
--- Diff:
flink-core/src/main/java/org/apache/flink/configuration/CoreOptions.java ---
@@ -127,7 +130,30 @@
*/
public static final ConfigOption<String> DEFAULT_FILESYSTEM_SCHEME =
ConfigOptions
.key("fs.default-scheme")
- .noDefaultValue();
+ .noDefaultValue()
+ .withDescription("The default filesystem scheme, used
for paths that do not declare a scheme explicitly.");
--- End diff --
Yes, in a practical sense "file:///" is the default due to how `FileSystem`
works. We can't define it as the official default at the moment because of OS
compatibility, see LocalFileSystem:
```
LOCAL_URI = OperatingSystem.isWindows() ? URI.create("file:/") :
URI.create("file:///");
```
Not sure whether that is really necessary though, but the scheme parsing by
`Paths` is a [bit wonky on
Windows](https://issues.apache.org/jira/browse/FLINK-6889).
---
