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ethcore: kovan: delay activation of strict score validation #9406

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Aug 24, 2018

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Fix #9403.

Recently we added a stricter validation of block score for AuthorityRound chains (#9164). But in the past we had a race condition that lead to generating some blocks with invalid difficulty (#7198). Taking into account the date of that PR, it would be expected for the issue to not exist past around block #5000000 on Kovan. Still, I synced the chain, increasing the transition block every time I found an invalid block and the issue was rare enough that I think it explains why it seems to have stopped happening before the fix was released.

I'm currently syncing Kovan at around block #6000000 and haven't seen any block that fails validation past #4301764.

@andresilva andresilva added A0-pleasereview 🤓 Pull request needs code review. M4-core ⛓ Core client code / Rust. labels Aug 23, 2018
@andresilva andresilva requested a review from 5chdn August 23, 2018 13:44
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I would appreciate it if someone else could sync Kovan from scratch with this change.

@andresilva andresilva requested a review from sorpaas August 23, 2018 13:46
@5chdn 5chdn added this to the 2.1 milestone Aug 23, 2018
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5chdn commented Aug 23, 2018

with --no-warp and --tracing on?

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Yes, with --no-warp. Tracing isn't relevant in this case, the original issue should happen with and without tracing.

This was referenced Aug 23, 2018
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Just finished a full sync with these changes.

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Syncs flawlessly

@5chdn 5chdn added A8-looksgood 🦄 Pull request is reviewed well. and removed A0-pleasereview 🤓 Pull request needs code review. labels Aug 23, 2018
@sorpaas sorpaas merged commit e8e0b08 into master Aug 24, 2018
@sorpaas sorpaas deleted the andre/fix-kovan-sync branch August 24, 2018 00:14
dvdplm added a commit that referenced this pull request Aug 30, 2018
* master:
  evmbin: Fix gas_used issue in state root mismatch and handle output better (#9418)
  Update hardcoded sync (#9421)
  Add block reward contract config to ethash and allow off-chain contracts (#9312)
  Private packets verification and queue refactoring (#8715)
  Update tobalaba.json (#9419)
  docs: add parity ethereum logo to readme (#9415)
  build: update rocksdb crate (#9414)
  Updating the CI system  (#8765)
  Better support for eth_getLogs in light mode (#9186)
  Add update docs script to CI (#9219)
  `gasleft` extern implemented for WASM runtime (kip-6) (#9357)
  block view! removal in progress (#9397)
  Prevent sync restart if import queue full (#9381)
  nonroot CentOS Docker image (#9280)
  ethcore: kovan: delay activation of strict score validation (#9406)
5chdn added a commit that referenced this pull request Aug 30, 2018
* parity-version: bump stable to 1.11.9

* Fix compilation error on nightly rust (#8707)

On nightly rust passing `public_url` works but that breaks on stable. This works for both.

* parity-version: bump stable to 1.11.10

* Check if synced when using eth_getWork (#9193) (#9210)

* Check if synced when using eth_getWork (#9193)

* Don't use fn syncing

* Fix identation

* Fix typo

* Don't check for warping

* rpc: avoid calling queue_info twice on eth_getWork

* Fix potential as_usize overflow when casting from U256 in miner (#9221)

* Allow old blocks from peers with lower difficulty (#9226)

Previously we only allow downloading of old blocks if the peer
difficulty was greater than our syncing difficulty. This change allows
downloading of blocks from peers where the difficulty is greater then
the last downloaded old block.

* Update Dockerfile (#9242)

* Update Dockerfile

fix Docker build

* fix dockerfile paths: parity -> parity-ethereum (#9248)

* Update tobalaba.json (#9313)

* Light client `Provide default nonce in transactions when it´s missing` (#9370)

* Provide `default_nonce` in tx`s when it´s missing

When `nonce` is missing in a `EthTransaction` will cause it to fall in
these cases provide `default_nonce` value instead!

* Changed http:// to https:// on Yasm link (#9369)

Changed http:// to https:// on Yasm link in README.md

* Provide `default_nonce` in tx`s when it´s missing

When `nonce` is missing in a `EthTransaction` will cause it to fall in
these cases provide `default_nonce` value instead!

* Address grumbles

* ethcore: kovan: delay activation of strict score validation (#9406)

* Use impl Future in the light client RPC helpers (#8628)

* Better support for eth_getLogs in light mode (#9186)

* Light client on-demand request for headers range.

* Cache headers in HeaderWithAncestors response.

Also fulfills request locally if all headers are in cache.

* LightFetch::logs fetches missing headers on demand.

* LightFetch::logs limit the number of headers requested at a time.

* LightFetch::logs refactor header fetching logic.

* Enforce limit on header range length in light client logs request.

* Fix light request tests after struct change.

* Respond to review comments.

* Propagate transactions for next 4 blocks. (#9265)

Closes #9255

This PR also removes the limit of max 64 transactions per packet, currently we only attempt to prevent the packet size to go over 8MB. This will only be the case for super-large transactions or high-block-gas-limit chains.

Patching this is important only for chains that have blocks that can fit more than 4k transactions (over 86M block gas limit)

For mainnet, we should actually see a tiny bit faster propagation since instead of computing 4k pending set, we only need `4 * 8M / 21k = 1523` transactions.

Running some tests on `dekompile` node right now, to check how it performs in the wild.

* ethcore: fix pow difficulty validation (#9328)

* ethcore: fix pow difficulty validation

* ethcore: validate difficulty is not zero

* ethcore: add issue link to regression test

* ethcore: fix tests

* ethcore: move difficulty_to_boundary to ethash crate

* ethcore: reuse difficulty_to_boundary and boundary_to_difficulty

* ethcore: fix grumbles in difficulty_to_boundary_aux
5chdn added a commit that referenced this pull request Aug 31, 2018
* parity-version: bump beta to 2.0.2

* remove ssl from dockerfiles, closes #8880 (#9195)

* snap: remove ssl dependencies from snapcraft definition (#9222)

* parity-version: bump beta to 2.0.3

* Remove all dapp permissions related settings (#9120)

* Completely remove all dapps struct from rpc

* Remove unused pub use

* Remove dapp policy/permission func in ethcore

* Remove all dapps settings from rpc

* Fix rpc tests

* Use both origin and user_agent

* Address grumbles

* Address grumbles

* Fix tests

* Check if synced when using eth_getWork (#9193) (#9210)

* Check if synced when using eth_getWork (#9193)

* Don't use fn syncing

* Fix identation

* Fix typo

* Don't check for warping

* rpc: avoid calling queue_info twice on eth_getWork

* Fix potential as_usize overflow when casting from U256 in miner (#9221)

* Allow old blocks from peers with lower difficulty (#9226)

Previously we only allow downloading of old blocks if the peer
difficulty was greater than our syncing difficulty. This change allows
downloading of blocks from peers where the difficulty is greater then
the last downloaded old block.

* Update Dockerfile (#9242)

* Update Dockerfile

fix Docker build

* fix dockerfile paths: parity -> parity-ethereum (#9248)

* Propagate transactions for next 4 blocks. (#9265)

Closes #9255 

This PR also removes the limit of max 64 transactions per packet, currently we only attempt to prevent the packet size to go over 8MB. This will only be the case for super-large transactions or high-block-gas-limit chains.

Patching this is important only for chains that have blocks that can fit more than 4k transactions (over 86M block gas limit)

For mainnet, we should actually see a tiny bit faster propagation since instead of computing 4k pending set, we only need `4 * 8M / 21k = 1523` transactions.

Running some tests on `dekompile` node right now, to check how it performs in the wild.

* Update tobalaba.json (#9313)

* Fix load share (#9321)

* fix(light_sync): calculate `load_share` properly

* refactor(api.rs): extract `light_params` fn, add test

* style(api.rs): add trailing commas

* ethcore: fix pow difficulty validation (#9328)

* ethcore: fix pow difficulty validation

* ethcore: validate difficulty is not zero

* ethcore: add issue link to regression test

* ethcore: fix tests

* ethcore: move difficulty_to_boundary to ethash crate

* ethcore: reuse difficulty_to_boundary and boundary_to_difficulty

* ethcore: fix grumbles in difficulty_to_boundary_aux

* Light client `Provide default nonce in transactions when it´s missing` (#9370)

* Provide `default_nonce` in tx`s when it´s missing

When `nonce` is missing in a `EthTransaction` will cause it to fall in
these cases provide `default_nonce` value instead!

* Changed http:// to https:// on Yasm link (#9369)

Changed http:// to https:// on Yasm link in README.md

* Provide `default_nonce` in tx`s when it´s missing

When `nonce` is missing in a `EthTransaction` will cause it to fall in
these cases provide `default_nonce` value instead!

* Address grumbles

* ethcore: kovan: delay activation of strict score validation (#9406)

* Better support for eth_getLogs in light mode (#9186)

* Light client on-demand request for headers range.

* Cache headers in HeaderWithAncestors response.

Also fulfills request locally if all headers are in cache.

* LightFetch::logs fetches missing headers on demand.

* LightFetch::logs limit the number of headers requested at a time.

* LightFetch::logs refactor header fetching logic.

* Enforce limit on header range length in light client logs request.

* Fix light request tests after struct change.

* Respond to review comments.

* Add update docs script to CI (#9219)

* Add update docs script to CI

Added a script to CI that will use the jsonrpc tool to update rpc
documentation then commit and push those to the wiki repo.

* fix gitlab ci lint

* Only apply jsonrpc docs update on tags

* Update gitlab-rpc-docs.sh

* Copy correct parity repo to jsonrpc folder

Copy correct parity repo to jsonrpc folder before attempting to build docs since the CI runner clones the repo as parity and not parity-ethereum.

* Fix JSONRPC docs CI job

Update remote config in wiki repo before pushing changes using a github
token for authentication. Add message to wiki tag when pushing changes.
Use project directory to correctly copy parity code base into the
jsonrpc repo for doc generation.

* Fix set_remote_wiki function call in CI

* Prevent blockchain & miner racing when accessing pending block. (#9310)

* Prevent blockchain & miner racing when accessing pending block.

* Fix unavailability of pending block during reseal.

* Prevent sync restart if import queue full (#9381)

* Add POA Networks: Core and Sokol (#9413)

* ethcore: add poa network and sokol chainspecs

* rpc: simplify chain spec docs

* cli: rearrange networks by main/test and size/range

* parity: don't blacklist 0x00a328 on sokol testnet

* parity: add sokol and poanet to params and clean up a bit, add tests

* ethcore: add the poa networks and clean up a bit

* ethcore: fix path to poacore chain spec

* parity: rename poa networks to poacore and poasokol

* parity: fix configuration tests

* parity: fix parameter tests

* ethcore: rename POA Core and POA Sokol

* Update tobalaba.json (#9419)

* Update hardcoded sync (#9421)

- Update foundation hardcoded header to block 6219777 
- Update ropsten hardcoded header to block 3917825 
- Update kovan hardcoded header to block 8511489
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Stage 3 block verification failed for #1000002 on Kovan with tracing turned on
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