You're right, Russia needed to hire manpower from abroad. Historically, Russia prefers to hire labour from the Central Asian states. But there has been recent spate of Islamic terrorism perpetrated by immigrants from those nations. Most notoriously, last year's Crocus City Hall massacre.
Russians are probably not feeling very trusting of the Islamic world, especially after what happened to Syria last December. So we cannot blame them for looking elsewhere. NK and China are not in the business of mass-exporting labour. So the only alternative choice left is India. Still, mass-importing Indian manpower is going to bring it's own problems. But compared to Islamic extremism, it's a far less dangerous problem.
If Indian labour is gonna be a short term fix, then yes there won't be lasting problems with Russia's industries. However, knowing the Indians, they are gonna wanna keep this going for as long as possible. Many will attempt sweet talk their way into higher positions in Russian firms. Due to Russia's demographic limitations, it may be very tempting to make this thing permanent. The longer Russians use Indian labour, and the deeper the Indians infiltrate Russian industries, the more their experience is gonna mirror those in the Anglo nations.