Memcache: Query failed(SELECT decode_url, headline, snippet, thumb_url, spam, twit_text,twit_user FROM ipl WHERE headline_hash = 'bf99fd407272eba227807bb3c313bd4a') UNION (SELECT decode_url, headline, snippet, thumb_url, spam, twit_text, twit_user FROM archive WHERE headline_hash = 'bf99fd407272eba227807bb3c313bd4a') limit 0,5