juicedata/juicefs · error

failed to head object %s

Error message

failed to head object %s

What it means

Returned by objbench's 'head an object' test when blob.Head on the uploaded object fails. It wraps the backend metadata-lookup error, indicating stat/head semantics or credentials problems on the store under test.

Source

Thrown at cmd/objbench.go:849

		// get the end out of range
		if d, e := get(blob, key, 4, 2); e != nil || d != "o" {
			return warning(fmt.Errorf(`failed to get object with the end out of range, expect "o", but got %q, error: %s`, d, e))
		}
		// get the off out of range
		if d, e := get(blob, key, 6, 2); e != nil || d != "" {
			return warning(fmt.Errorf(`failed to get object with the offset out of range, expect "", but got %q, error: %s`, d, e))
		}
		return nil
	})

	runCase("head an object", func(blob object.ObjectStorage) error {
		br := []byte("hello")
		if err := blob.Put(ctx, key, bytes.NewReader(br)); err != nil {
			return fmt.Errorf("put object failed: %s", err)
		}
		defer blob.Delete(ctx, key) //nolint:errcheck
		if h, err := blob.Head(ctx, key); err != nil {
			return fmt.Errorf("failed to head object %s", err)
		} else {
			if h.Key() != key {
				return fmt.Errorf("expected key 'test' but got %s", h.Key())
			}
		}
		return nil
	})

	runCase("delete an object", func(blob object.ObjectStorage) error {
		br := []byte("hello")
		if err := blob.Put(ctx, key, bytes.NewReader(br)); err != nil {
			return fmt.Errorf("put object failed: %s", err)
		}
		if err := blob.Delete(ctx, key); err != nil {
			return fmt.Errorf("delete failed: %s", err)
		}
		if _, err := blob.Head(ctx, key); err == nil {
			return fmt.Errorf("expect err is not nil")

View on GitHub (pinned to c9a67b23e8)

Solutions

1. Verify head/stat permissions and endpoint correctness
2. Re-run objbench to rule out transient API errors

When it happens

Trigger: Thrown at cmd/objbench.go:849 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of juicedata/juicefs@c9a67b23e8 (2026-09-06). Data as JSON: /api/errors/1a62a889fec2f66d. Report an issue: GitHub.