[DO NOT MERGE] Release candidate/2.1

[larskuhtz]

This branch collects all changes for 1.20. Do not merge this PR to master. Instead merge the feature PRs and update this PR. We will regularly rebase and force-push this branch.

PRs

Open

• Version 2.1 #1134 [Version 2.1]
  • code complete
  • confirm new kill switch
  • approved
  • update released date in Changelog

Merged:

• Fix Multinode tests #1133 [Fix multimode tests]
  • code complete
  • tested
  • approved
• More efficient and correct database pruning #1132 [More efficient and correct database pruning]
  • code complete
  • tested
  • approved
  • updated version approved
• database directory configuration #1128 [database directory configuration]
  • code complete
  • tested (mostly, see PR)
  • approved
• Improve failure response for invalid solved work #1126 [Improve failure response for invalid solved work]
  • code complete
  • tested
  • approved
• Fix mainnet coin v2 upgrade for new chains #1130 [Fix mainnet coin v2 upgrade for new chains]
  • code complete
  • tested (TODO, add unit tests using headers from simulation)
  • approved

Bugs (needs triage)

• closed Fix slow tests (regression of Rosetta Tests #1079, cf. https://github.com/kadena-io/chainweb-node/runs/855799577?check_suite_focus=true)

• postponed It seems that the mempool doesn't delete transactions after they got inserted into blocks promptly, but it seems that they are still gossiped around for quite a while

• postponed Create SPV proofs for transfers that where initiated before the target chain existed

• postponed/not needed ignore new chains during first 2 DAs on old chains

• postponed Fix GitHub CI builds (move mainnet history validation into separate workflow)

Needs more investigation

• postponed daily pattern of cut-db timeouts
• postponed Memory leaks (postponed)

Postponed: Features / Stability / Performance

• Cleanup redundant guard logic
• reduce mempool network overhead
• implement attachments for remotely published cuts
• test most recent version of network package

Testing

Mainnet Simulation

• run full regression test suite
  • before transition
  • during transition
  • after transition
• verify all account balances after transition
  • check funding of Kad_20
  • verify other accounts

Mainnet

• pact history validation
  • More efficient and correct database pruning #1132
  • repeat with final release candidate
• block header history validation
• catchup
  • with intermediate restarts

TODO

• Double check 20-chain transition date
• Double check estimated DA target for 20-chain transition
• Define and update kill switch date
  • proposed date 2020-10-15T00:00:00Z
• Update changelog
• Update cabal version number
• build release binaries
• Update docker image

Postponed after release

• migrate testnet infrastructure to local APIs

• Migrate mainnet infrastructure to local APIs

  • define new domain names
  • setup DNS
  • setup proxies / load balancers (currently, a small proxy is running in us-east-1)
  • Adjust domain names in applications
    • block explorer
    • Chainweaver
    • transfer tool
      *. [ ] balance checker
    • what else?
  • if needed setup proxies for backward compatibility

• Write migration guide for third parties

• inform third parties about new interfaces