gaborgsomogyi commented on code in PR #20011:
URL: https://github.com/apache/flink/pull/20011#discussion_r901835791


##########
flink-core/src/main/java/org/apache/flink/core/fs/FileSystem.java:
##########
@@ -527,13 +527,30 @@ public static FileSystem getUnguardedFileSystem(final URI 
fsUri) throws IOExcept
                 try {
                     fs = FALLBACK_FACTORY.create(uri);
                 } catch (UnsupportedFileSystemSchemeException e) {
-                    throw new UnsupportedFileSystemSchemeException(
-                            "Could not find a file system implementation for 
scheme '"
-                                    + uri.getScheme()
-                                    + "'. The scheme is not directly supported 
by Flink and no Hadoop file system to "
-                                    + "support this scheme could be loaded. 
For a full list of supported file systems, "
-                                    + "please see 
https://nightlies.apache.org/flink/flink-docs-stable/ops/filesystems/.";,
-                            e);
+                    if 
(DIRECTLY_SUPPORTED_FILESYSTEM.containsKey(uri.getScheme())) {
+                        final Collection<String> plugins =
+                                
DIRECTLY_SUPPORTED_FILESYSTEM.get(uri.getScheme());
+                        throw new UnsupportedFileSystemSchemeException(
+                                String.format(
+                                        "Could not find a file system 
implementation for scheme '%s'. The scheme is "
+                                                + "directly supported by Flink 
through the following plugin%s: %s "

Review Comment:
   Changed.



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