fix 'Sample' object has no attribute 'storage' (#1686)
fix 'Sample' object has no attribute 'storage' (#1686)


yangw1234/BigDL,yangw1234/BigDL,yangw1234/BigDL,yangw1234/BigDL,intel-analytics/BigDL,intel-analytics/BigDL,intel-analytics/BigDL,intel-analytics/BigDL