Max Inden 1d10db3184 frame/authority-discovery: Have authorities() return both current and next (#6788) ...

* frame/authority-discovery: Have authorities() return both current and next

Authority address lookups on the DHT happen periodically (every 10
mintues) and are rather slow (~10 seconds).

In order to smooth the transition period between two sessions, have the
runtime module return both the current as well as the next authority
set. Thereby the client authority module will:

1. Publish its addresses one session in advance.

2. Prefetch the addresses of authorities of the next session in advance.

* frame/authority-discovery: Deduplicate authority ids

* frame/authority-discovery: Don't dedup on_genesis authorities

* frame/authority-discovery: Remove mut and sort on comparison in tests

* frame/authority-discovery: Use BTreeSet for deduplication

2020-09-02 15:20:51 +00:00

substrate

frame/authority-discovery: Have authorities() return both current and next (#6788)

2020-09-02 15:20:51 +00:00

S

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