whua3 opened a new issue, #11813:
URL: https://github.com/apache/gravitino/issues/11813
### Version
main branch
### Describe what's wrong
`GravitinoVirtualFileSystem` extends `org.apache.hadoop.fs.FileSystem` but
does not override `getScheme()`. The base implementation throws
`UnsupportedOperationException`, so any caller that invokes `fs.getScheme()` on
a `gvfs://` filesystem fails.
It should simply return the GVFS scheme (`gvfs`, already defined as
`GravitinoVirtualFileSystemConfiguration.GVFS_SCHEME`), consistent with other
Hadoop `FileSystem` implementations (HDFS → `hdfs`, S3A → `s3a`, etc.).
### Error message and/or stacktrace
```
java.lang.UnsupportedOperationException: Not implemented by the
GravitinoVirtualFileSystem FileSystem implementation
at org.apache.hadoop.fs.FileSystem.getScheme(FileSystem.java:226)
...
```
### How to reproduce
```java
Configuration conf = new Configuration();
// ... GVFS configuration ...
FileSystem fs =
FileSystem.get(URI.create("gvfs://fileset/metalake/catalog/schema/fs1"), conf);
fs.getScheme(); // throws UnsupportedOperationException
```
### Additional context
_No response_
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