Improvement: Have harvester do multiple jobs at the same time

[mrseeker]

At the moment I am trying to synchronize a polkadot chain which has 3.5 million records, taking almost 3 days to get through the full chain. Is it possible to run other jobs at the same time it's receiving blocks or do they have to be in order?

[arjanz]

There are dependencies for certain jobs, but technically speaking some could be running in parallel. In the previous version there actually was a degree of parallelisation, but then we ran into other issues like DB-locking. Also it is much easier to keep track of progress, but the take-away is indeed a longer time for the initial sync.