is one piece episode 316 filler?

The episode starts by showing everyone at Water 7 partying, with Sogeking singing, the Franky Family dancing, etc. The scene changes to a fleet of destroyed Marine ships.

An unharmed pirate ship proceeds past them. Meanwhile, the Five Elders are informed that the Whitebeard Pirates and the Red Hair Pirates have broken through the Marine's defenses and that the two crews are arranged to have a meeting.

On Whitebeard's ship, Whitebeard is informed of Shanks' arrival. At Navy Headquarters, Marine soldiers are on standby after hearing the news of the meeting.