This PR improves the pbss archive mode. Initial sync
of an archive mode which has the --gcmode archive
flag enabled will be significantly sped up.
It achieves that with the following changes:
The indexer now attempts to process histories in batch whenever
possible.
Batch indexing is enforced when the node is still syncing and the local
chain
head is behind the network chain head.
In this scenario, instead of scheduling indexing frequently alongside
block
insertion, the indexer waits until a sufficient amount of history has
accumulated
and then processes it in a batch, which is significantly more efficient.
---------
Co-authored-by: Sina M <1591639+s1na@users.noreply.github.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
