fastest way to check if backup

[Yakov Zhdanov]

Guys,

cctx.affinity().backups(entry.key(),
cctx.topology().topologyVersion()).contains(cctx.localNode())

does not seem to be fast enough.

cctx.affinity().backups() returns F.view() over ArrayList with excluded
first element which always ends up into an iteration.

Alex G, thoughts?

--Yakov