tds/src/main/java/thredds/server/radarServer2/RadarServerConfig.java
private static FileSystemProvider getProvider(URI uri) throws IOException {
        if(fsproviders.containsKey(uri.getScheme())) {
            return fsproviders.get(uri.getScheme());
        } else {
            FileSystem fs;
            try {
                fs = FileSystems.newFileSystem(uri,
                        new HashMap<String, Object>(),
                        Thread.currentThread().getContextClassLoader());
            } catch (FileSystemAlreadyExistsException e) {
                fs = FileSystems.getFileSystem(uri);
            }
            fsproviders.put(uri.getScheme(), fs.provider());
            return fs.provider();
        }
    }
private static FileSystemProvider getProvider(URI uri) throws IOException {
        if(fsproviders.containsKey(uri.getScheme())) {
            return fsproviders.get(uri.getScheme());
        } else {
            FileSystem fs;
            try {
                fs = FileSystems.newFileSystem(uri,
                        new HashMap<String, Object>(),
                        Thread.currentThread().getContextClassLoader());
            } catch (FileSystemAlreadyExistsException e) {
                fs = FileSystems.getFileSystem(uri);
            }
            fsproviders.put(uri.getScheme(), fs.provider());
            return fs.provider();
        }
    }
filesystem can't be re-created either.