apache/beam · info

format, args...

Error message

format, args...

What it means

internal/errors.Errorf formats a message with fmt.Errorf(format, args...) and returns it. The recorded message "format, args..." is just the function signature; the real text comes from the call site's format string and arguments.

Solutions

1. Read the formatted message to identify the root cause.
2. Check the named caller (e.g. GetArtifact/PutArtifact) for the failing operation — often network or artifact-repository issues.
3. Add errors.Wrap at call sites you control to preserve context.

if err := op(); err != nil {
    log.Printf("beam op failed: %v", err) // Errorf message carries the cause
}

When it happens

Trigger: Any call to beam/internal/errors.Errorf from Beam internals such as GetArtifact, validate, matchLocations, PutArtifact, extractStagingToPath, or retrieve.

Common situations: Encountered during artifact staging/retrieval failures or pipeline validation errors; the underlying cause is described by the formatted message, not this wrapper.

Understand the failure class

Background: "This is a bug, please report it": internal invariant violations, unreachable panics, and SNH errors explained — this error's family across 47 libraries.

Related errors

• %s
• AfterProcessingTime trigger set without a delay or…
• array len mismatch. decoding
• At least one subtrigger required for composite triggers.
• attempted to add namespace to missing coder id

AI-assisted analysis of apache/beam@12126d8942 (2026-09-13). Data as JSON: /api/errors/93372e1dd5b69233. Report an issue: GitHub.

Appendix: source

Thrown at sdks/go/pkg/beam/internal/errors/errors.go:34

// Package errors contains functionality for creating and wrapping errors with improved formatting
// compared to the standard Go error functionality.
package errors

import (
	"fmt"
	"io"
	"strings"
)

// New returns an error with the given message.
func New(message string) error {
	return fmt.Errorf("%s", message)
}

// Errorf returns an error with a message formatted according to the format
// specifier.
func Errorf(format string, args ...any) error {
	return fmt.Errorf(format, args...)
}

// Wrap returns a new error annotating err with a new message.
func Wrap(err error, message string) error {
	if err == nil {
		return nil
	}
	return &beamError{
		cause: err,
		msg:   message,
		top:   getTop(err),
	}
}

// Wrapf returns a new error annotating err with a new message according to
// the format specifier.
func Wrapf(err error, format string, args ...any) error {
	if err == nil {

View on GitHub (pinned to 12126d8942)