no, there’s nothing like the GAU-8 Avenger
The Soviet union does have something like the Gau-8 Avenger and they did put it in a plane that they intended to be like the A-10. GSh-6-30 autocannon in a MiG-27.
It sort of worked, in that it flew and fired. Though if you had any sense you'd be very reluctant to do both at the same time. The plane probably wouldn't fall apart immediately, but it would be damaged and possibly seriously. There's a video on it from the Paper Skies channel on Youtube with an unflattering but mostly accurate title - "Soviet Gun That Kept Destroying Its Own Aircraft".
For a very quick summary, here's a snippet from the Wikipedia page on the combo:
https://en.wikipedia.org/wiki/Gryaz...oming_-_Dr_Karl_Kruszelnicki_-_Google_Books-4The gun was noted for its high (often uncomfortable) vibration and extreme noise. The airframe vibration led to fatigue cracks in fuel tanks, numerous radio and avionics failures, the necessity of using runways with floodlights for night flights (as the landing lights would often be destroyed), tearing or jamming of the forward landing gear doors (leading to at least three crash landings), cracking of the reflector gunsight, an accidental jettisoning of the cockpit canopy and at least one case of the instrument panel falling off in flight. The weapons also dealt extensive collateral damage, as the sheer numbers of fragments from detonating shells was sufficient to damage aircraft flying within a 200-meter radius from the impact center, including the aircraft firing.[4]
Making a flying big gun seems like an obvious solution, but it has to be specifically designed that way and designed very well. The A-10 was both. The soviet version was neither. They tried to shoehorn an existing gun (designed for naval use) into an existing plane.