Release 2.05.0.5.1: critical security fix and miner improvements
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Jude Nelson
Oct 25, 2022, 11:27:23 AM10/25/22
to announce
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Hello,
We have released Stacks version 2.05.0.5.1, available here: https://github.com/blockstack/stacks-blockchain/releases/tag/2.05.0.5.1.
This release improves mining performance and fixes a DoS bug. Everyone is encouraged to upgrade as soon as possible.
Changelog:
## [2.05.0.5.1] - 2022-10-25
### Changed
- - The new minimum Rust version is 1.61
- - The act of walking the mempool will now cache address nonces in RAM and to a
temporary mempool table used for the purpose, instead of unconditionally
querying them from the chainstate MARF. This builds upon improvements to mempool
goodput over 2.05.0.4.0 (#3337).
- - The node and miner implementation has been refactored to remove write-lock
contention that can arise when the node's chains-coordinator thread attempts to store and
process newly-discovered (or newly-mined) blocks, and when the node's relayer
thread attempts to mine a new block. In addition, the miner logic has been
moved to a separate thread in order to avoid starving the relayer thread (which
must handle block and transaction propagation, as well as block-processing).
The refactored miner thread will be preemptively terminated and restarted
by the arrival of new Stacks blocks or burnchain blocks, which further
prevents the miner from holding open write-locks in the underlying
chainstate databases when there is new chain data to discover (which would
invalidate the miner's work anyway). (#3335).
### Fixed
- - Fixed `pow` documentation in Clarity (#3338).
- - Backported unit tests that were omitted in the 2.05.0.3.0 release (#3348).
Git commit hash: a0393e47452ae45eea645d792717d41035320961
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Best,
Jude Nelson
Research Scientist, Stacks Foundation
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Hash: SHA512
Hello,
We have released Stacks version 2.05.0.5.1, available here: https://github.com/blockstack/stacks-blockchain/releases/tag/2.05.0.5.1.
This release improves mining performance and fixes a DoS bug. Everyone is encouraged to upgrade as soon as possible.
Changelog:
## [2.05.0.5.1] - 2022-10-25
### Changed
- - The new minimum Rust version is 1.61
- - The act of walking the mempool will now cache address nonces in RAM and to a
temporary mempool table used for the purpose, instead of unconditionally
querying them from the chainstate MARF. This builds upon improvements to mempool
goodput over 2.05.0.4.0 (#3337).
- - The node and miner implementation has been refactored to remove write-lock
contention that can arise when the node's chains-coordinator thread attempts to store and
process newly-discovered (or newly-mined) blocks, and when the node's relayer
thread attempts to mine a new block. In addition, the miner logic has been
moved to a separate thread in order to avoid starving the relayer thread (which
must handle block and transaction propagation, as well as block-processing).
The refactored miner thread will be preemptively terminated and restarted
by the arrival of new Stacks blocks or burnchain blocks, which further
prevents the miner from holding open write-locks in the underlying
chainstate databases when there is new chain data to discover (which would
invalidate the miner's work anyway). (#3335).
### Fixed
- - Fixed `pow` documentation in Clarity (#3338).
- - Backported unit tests that were omitted in the 2.05.0.3.0 release (#3348).
Git commit hash: a0393e47452ae45eea645d792717d41035320961
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Best,
Jude Nelson
Research Scientist, Stacks Foundation
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