Community Update 202

Owned by Rao Bhamidipati
Dec 15, 2021

General

  • Status of the networks and Releases
    • All Main net nodes are running RNode version 0.12.4 (primarily containing the PRs to update the Open API JSON and the 'find by blockhash' function). This version includes the block merge code that does not require a hard fork, but block merge is currently disabled until we have the block merge version coming up in hard fork 2, aka block merge hard fork.
    • There are two planned hard forks: one for block merge (release versioning will be 0.13.x) and one for PoS changes (release versioning will be either 0.14.x or 1.x.x) to eventually enable a fully decentralized node with external validators.
    • A block merge test net (currently running the 0.12.4 version) is available for the community at node{0-4}.bm.testnet.rchain.coop, observer.bm.testnet.rchain.coop, faucet is available at https://status.bm.testnet.rchain.coop/testnet/faucet/ and Tomislav's (TypeScript) test page with block merge network support is available at https://tgrospic.github.io/rnode-client-js-dev-test/
    • Both *.bm.testnet.rchain.coop and *.llbm.testnet.rchain.coop are part of hard fork 2. the llbm version has the latest code. Having the two test nets will allow the community testers to trace any unexpected behavior in their tests to the latest code changes vs. the code that has been running on bm.testnet for a while. The *.llbm.testnet.rchain (Leaderless block merge test net) stability is much improved, but the team will be making further changes to it. It is currently unavailable for community testing, to allow the team to fix a bug in the finalization frontier/barrier/fringe calculation. Community members interested in testing can request testrev for llbm in the #testnet channel. Once we determine llbm.testnet to be fully stable, it will become the sole test net for hard fork 2.

Sprint 104 in progress

Main Focus is to prepare the leaderless block merge Hard fork (hf2), specifically (a) merging REV balances directly - currently on hold until other llbm issues are resolved (b) leaderless block merge - work ongoing (c) a lot of testing + bug fixing and (d) performance improvements. Other work includes resolving any identified bugs,  hardening the network.  Current PR list is at https://github.com/rchain/rchain/pulls .  

Block merge Hard Fork (hf2)

  1. LLBM: The design for finalization frontier/barrier/fringe calculation is nearly complete, after several days of discussion and running through cases by hand. Tomislav and Nutzipper are working through the last remaining details and verification of the design, so they can move to coding.  Design is at Finalization Fringe and Merge Logic https://docs.google.com/document/d/1pZDO6Jh5nfgr4tZDGdMJhWKm1rFSGcDghDNo4XVDrBc/
  2. Nutzipper has extracted relevant parts of the code from LLBM branch to be merged into the HF2 branch  PR https://github.com/rchain/rchain/pull/3560.Some tests need to be looked into to finalize this code for review.
  3. After the above is complete, two more tasks remain for HF2:
    1. Block merge behavior at the time of epoch change needs to be discussed and implemented (seems relatively straight forward at the moment).
    2. Completion of code to prevent double spending in the improved REV transfer - Tomislav
  4. Tomislav has made improvements to the RChat repo to make it easy to use and has been guiding Martin on his task, as well as the rest of the team.
  5. Denis is making progress on implementing the import/export using his improved (better performance reduced storage) algorithm for History data and integrating it into the HF2 branch.  He is now getting ready to test it and measure performance with a full node setup. He will be working with Stas and Tomislav to wrap this up.
  6. Stas is working on making 40402 the default port for CLI repl client based on this issue https://github.com/rchain/rchain/issues/3562  His PR is at https://github.com/rchain/rchain/pull/3564 and making minimum phlo price parameterized  (https://github.com/rchain/rchain/pull/3556. ) 
  7. Will is making progress on creating proofs of concept for PoS contract improvements to make sure that the approach is viable and does not introduce any other issues. His PRs are at https://github.com/rchain/rchain/pull/3565 and https://github.com/rchain/rchain/pull/3563.
  8. Status of various Block merge tasks is at
    1. https://github.com/rchain/rchain/projects/4
    2. Current status of updated HF2 task list is at https://github.com/rchain/rchain/issues/3315

Release Plan for the rest of the year and beyond - for reference

Currently planned near term releases are

  1. Block merge release hard fork 2 plus any configuration changes that do not need extensive work - Leaderful and Leaderless block merge
  2. Configuration changes release,
  3. Performance improvements releases (one or more),
  4. Hard Fork 3 with PoS changes and other items,
  5. External validators process validation with trusted community validators (aka Friends & Family) on the test net
  6. Friends & Family validation on the main net
  7. External validators among extended ecosystem (e.g. exchanges, if they're willing)
  8. External validators in the wild.


Explanation of the different Hard Forks (for reference)

Proceeding further with block merge requires changes to the per validator vault to make it a per deploy vault/purse etc. We are currently finalizing the design for this. Actual code and test will take some time. We are potentially looking at this scenario:
1. First hard fork for balances and removing the slashed validator
2. Second hard fork for block merge - This is the fastest way to get block merge on the main net without holding it until the third hard fork. This includes REV balance merging (aka per deploy vault), attestation messages and the Tree depth being increased to 4.
3. Third hard fork with all other changes.  Third hard fork includes implementation of a lot of changes including the PoS contract changes, Soft fork process etc.  Design for soft fork process is complete and is being reviewed by the team.

(Hard Fork) TEST NET 2 ADVISORY: (for reference)

To test the version of block merge with data changes that need a hard fork, we are creating a separate feature branch and a TEST NET 2 as the testbed for this feature branch. This content will be left here until we are close to Hard Fork 2 implementation on the main net. TestNet 2 is now available for the community to test their contracts on.

  1. There will be no guarantees of data storage format compatibility on Test Net 2, as the data storage format changes are incrementally implemented. The anticipated changes are mostly storage level format changes visible only to node operators. We encourage the community to start using Test Net 2 in addition to the current test net, so that we can quickly identify and resolve any issues with the upcoming hard forks. All new development should be targeted to TEST NET 2 and all current code MUST BE tested against TEST NET 2 to ensure future compatibility. 

On all the hard forks on the main net, we will be starting from an empty state, with REV balances only. On Test Net 2, this 'loosing the state' will be repeated multiple times.

Tech-Governance meetings on Fridays 9:30 AM Eastern, 6:30 Am Pacific 

Mercury requirements and acceptance criteria

Details on the acceptance criteria: Mercury acceptance criteria

Please see the documentation at https://github.com/rchain/rchain/blob/dev/docs/features.md. 

Developer website

https://developer.rchain.coop 

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