pentaho/pentaho-kettle · error · RuntimeException

The function call getFileSize is not valid.

Error message

The function call getFileSize is not valid.

What it means

Outer validation error thrown by ScriptAddedFunctions.getFileSize when the argument list has an invalid shape. The function expects exactly one argument (the file path); any other count makes the call 'not valid'. The outer catch (Exception e) also rethrows any other failure as e.toString() at the same site.

Solutions

1. Call getFileSize with exactly one string path argument.
2. Remove any extra arguments added to the call.
3. If the message is e.toString() instead, inspect that string for the underlying exception cause.

Example fix

// before
 var size = getFileSize(path, 'bytes');
// after
 var size = getFileSize(path);

if (typeof path === 'string' && path.length > 0) {
  var size = getFileSize(path);
}

function isNonEmptyString(v) { return typeof v === 'string' && v.length > 0; }

When it happens

Trigger: Calling getFileSize with zero arguments or more than one argument, e.g. getFileSize() or getFileSize(path, extra); the outer catch also surfaces any unexpected exception here as its toString().

Common situations: Copy-paste from a two-argument variant, refactorings that added an options parameter not supported by this function, or calling getFileSize with a null first argument.

Understand the failure class

Background: "missing required argument" and "the following required arguments were not provided": what required-argument errors mean and how to fix them — this error's family across 20 libraries.

Related errors

• The function call copyFileis not valid.
• The function call isFile is not valid.
• [ + ArgList[0] + ] is not a file!
• file [ + ArgList[0] + ] can not be found!
• ] is not a file!

AI-assisted analysis of pentaho/pentaho-kettle@f3058517a1 (2026-09-13). Data as JSON: /api/errors/11ec7fdd2a8887a8. Report an issue: GitHub.

Appendix: source

Thrown at engine/src/main/java/org/pentaho/di/trans/steps/script/ScriptAddedFunctions.java:2118

            }
          } else {
            throw new RuntimeException( "file [" + ArgList[0] + "] can not be found!" );
          }
          return filesize;
        } catch ( IOException e ) {
          throw new RuntimeException( "The function call getFileSize throw an error : " + e.toString() );
        } finally {
          if ( file != null ) {
            try {
              file.close();
            } catch ( Exception e ) {
              // Ignore errors
            }
          }
        }

      } else {
        throw new RuntimeException( "The function call getFileSize is not valid." );
      }
    } catch ( Exception e ) {
      throw new RuntimeException( e.toString() );
    }
  }

  public static boolean isFile( Bowl bowl, ScriptEngine actualContext, Bindings actualObject, Object[] ArgList,
    Object FunctionContext ) {
    try {
      if ( ArgList.length == 1 && !isNull( ArgList[0] ) && !isUndefined( ArgList[0] ) ) {
        if ( ArgList[0].equals( null ) ) {
          return false;
        }
        FileObject file = null;

        try {
          // Source file
          file = KettleVFS.getInstance( bowl ).getFileObject( (String) ArgList[0] );

View on GitHub (pinned to f3058517a1)