Release v1.6.3

v1.6.3 Release Notes

Fix

• Introduced Kafka message version 1 for chaindatafetcher (#998)
• Fixed minor bugs for chaindatafetcher (#983 #978)

Binaries

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Baobab-linux: kcn kpn ken

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Release v1.6.2

v1.6.2 Release Notes

Fix

• Fixed that prefetch logic leaks CPU usage. (#964)
• Fixed that prefetch logic accesses nil pointer. (#969)

Binaries

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Release v1.6.1

v1.6.1 Release Notes

New Features

• Introduced execution deadline and max item limit for klay_getLogs and klay_getFilterLogs APIs (#903)
• Introduced a metric to record hashLocked status (#932)
• Added Staking Information API (governance.getStakingInfo) (#929)
• Introduced an option to limit concurrency limitation of HTTP-RPC server (rpc.concurrencylimit) (#922)

Improvements

• Added a condition sending a COMMIT message for resolve hash lock issue (#888)
• Prefetch
  • Fixed the prefech logic for multiple txs of the same sender in a block (#911)
  • Enable TX prefetcher for multiple blocks (#916)
  • Move prefetcher execution as early as possible (#918)
  • Fixed the race condition of transaction access (#941)

Fixes

• Fixed invalid validator list in extraData of block headers (#891)

Miscellaneous

• Renamed an API, setMaxSubscriptionPerConn to setMaxSubscriptionPerWSConn (#897)
• Renamed hardfork name, Incompatible1 to IstanbulCompatible docs update needed (#901)

Binaries

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Baobab-linux: kcn kpn ken

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Release v1.6.0

New Features

• Introduced KES (Klaytn Endpoint System) (#707, #709)
  • Supported shared database and cache
  • KES Fetcher node processes blocks and KES Service node serves APIs with the shared database/cache without its processing
• Added debug.startCollectingTrieStats API which shows a stat of state trie (#740)
• Added debug.getModifiedStorageNodesByNumber API which returns modified trie nodes from the contract sotrage (#742)
• Added logs to show block processing summary (#747)
• Fixed an err in 4byte tracer and Added unigram/bigram/trigram tracers (#752)
• Supported ABIEncoderV2 to pack dynamic array and slice type (#753)
• Supported ABI to unpack tuple type and bytesN arrays (#807, #792, #786)
• Introduced state.trie-cache-save-period option for periodical saving fast cache to filesystem (#828)
• Added debug.StartContractWarmUp(common.Address) API to warm up contract storage trie node (#831)
• Introduced state prefetcher which executes future blocks and future transactions against current state for pre-loading state trie cache (#832, #860)

Improvements

• Split chain data to send Kafka messages by chain data fetcher (#708, #712)
• Changed metrics.Meter to metrics.Timer (#817)
• Updated default docker image ID (#824)
• Increased FD limit to the maximum value of the process (#827)

Fixes

• Fixed the path for saving trie node cache (#751)

Miscellaneous

• Disabled seek compaction for LevelDB (#715)
• Performed code refactoring (#730, #733, #735)
• Updated golang to 1.15.7 version (#875, #871)

Binaries

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Baobab-linux: kcn kpn ken

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Release v1.5.3

v1.5.3 Release Notes

New Features

• Implemented a streaming module to push fetched blockchain data to Kafka in real-time
  • Implemented a Kafka client (#685)
  • Added options for Kafka (#689)
  • Implemented a Kafka consumer (#697)
• Implemented Remote Cache (redis) (#681)
• Implemented Redis pub/sub for the latest block (#676)
• Implemented DB Migration feature (#648)
• Implemented StateTrieNode cache dump feature to restore the cache after restart for performance boost at cold start (#692, #702)

Improvements

• Fixed wrong status API output of state trie migration (#703)
• Fixed the validation logic of a role-based key including AccountKeyLegacy (#674)

Miscellaneous

• Added options to disable Fetcher/Downloader/Worker (#680, #688)
• Implemented to generate the genesis block with existing chain data (#649)
• Removed the unused flag --cache.writethrough (#682)
• Added an error log when failed to read the trie DB (#683)
• Added the staking contract source code (#699)
• Added --start-block-num to test past blocks (#711)
• Added a validity check when a keystore is created (#725)
• Added read/write performance metrics for Level DB (#726)

Binaries

• Linux: kcn kpn ken kscn kspn ksen kbn kgen homi
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• Baobab-linux: kcn kpn ken
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Release v1.5.2

v1.5.2 Release Notes

New Features

• Implemented chain data fetcher to push blockchain data to RDB in real time

  • Implemented chain data fetcher to load token transfer histories (#586)
  • Implemented chain data fetcher to load internal/revert transaction data (#587)
  • Implemented chain data fetcher to load contracts data (#588)

• Implemented supports for KAS Anchor API in Service chain Node (#591)

  • Blocks in a service chain can be easily anchored to Baobab/Cypress via KAS Anchor API using command options (#653)
  • txpool.allow-local-anchortx command option to allow anchor transaction submission via JSON-RPC (#614)
  • Support for a new anchor data type (JSON format) (#614)

Miscellaneous

• Added a new database implementation (DynamoDB) (#633, #624, #615, #598)
• Added overwrite-genesis flag to initialize the genesis block with an existing state (#649)
• Implemented stateDB cache interface to support various types of cache implementations (#646)

Binaries

• Linux: kcn kpn ken kscn kspn ksen kbn kgen homi
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• Baobab-linux: kcn kpn ken
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Release v1.5.2-rc.2

New Features

• Support KAS cache invalidation

Binaries

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• Baobab-linux: kcn kpn ken
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Release v1.5.2-rc.1

New Features

• Supported KAS Anchor API in Service chain Node
• Service chain owner can anchor service chain blocks easily via KAS Anchor API with some service chain node options.
• Added txpool.allow-local-anchortx command option to allow locally submitted anchor transaction

Binaries

• Linux: kcn kpn ken kscn kspn ksen kbn kgen homi
• Darwin: kcn kpn ken kscn kspn ksen kbn kgen homi
• Baobab-linux: kcn kpn ken
• Baobab-darwin: kcn kpn ken

Release v1.5.1

v1.5.1 Release Notes

Fixes

• Fixed a bad block issue (#576)
  • Resolved a race condition of state trie dereference logic.
  • Prevented dereference during commit and reference of the trie node cache.

Miscellaneous

• RC RPM publish / RC binary link to PR comment (#581)
  • Added a job to publish RPM when it comes to RC. You can install/upgrade to RC version much easier than before.
  • From now on, you can now download RC version binary from the link described in the comment for every release PR.
• Upgraded Golang version to v1.14.6 (#582)
  • Included fixes to the go command, the compiler, the linker, vet, and the database/sql, encoding/json, net/http, reflect, and testing packages. (https://golang.org/doc/devel/release.html)

Binaries

• Linux: kcn kpn ken kscn kspn ksen kbn kgen homi
• Darwin: kcn kpn ken kscn kspn ksen kbn kgen homi
• Baobab-linux: kcn kpn ken
• Baobab-darwin: kcn kpn ken

Release v1.5.0

v1.5.0 Release Notes

New Features

• State migration (#507)

  • New JSON-RPC API to remove the unnecessary and old state/storage trie, saving the storage space for Klaytn node (Cypress) by 75% (800 GB -> 200 GB)
    • admin.startStateMigration()
    • admin.stopStateMigration()
    • admin.stateMigrationStatus
  • Klaytn node currently requires about 1TB of storage space. This size of storage was a burdensome for efficient node operation, and the state migration came here to relieve this. The state migration removes the stale state/storage trie nodes which are unnecessary for new block generation and validation. Before starting a state migration, stakingInfo is saved in a database to get stakingInfo without the staled state after the state migration.

• Warm-up trie node cache (#548)

  • New JSON-RPC APIs to speed up the block processing by iterating the latest state trie and caching it
    • debug.startWarmUp()
    • debug.stopWarmUp()
  • Until now, Klaytn node had to continuously access a database for processing a block due to uncached state trie nodes, which results in the delay in block processing. The introduced "warm-up" feature reduces this delay by iterating the last state trie and caching it.

• Import blocks from String (#516)

  • Importing blocks was available only with a file. Importing blocks from a string is required for some use cases.
  • New JSON-RPC APIs
    • admin.importChainFromString()

• Fastcache (#490)

  • Fastcache as trie node cache with the autoscaled cache size, reducing memory consumption compared to Bigcache

Improvements

• Parameterizes triesInMemory and maxRequestContentLength (#555, #564)
• Uses cached state database in TraceBlock (#546)
• Improves consensus logic
  • Adds unit test code (#487, #492)
  • Refactors SubList/SubListWithProposer (#551)
  • Prevents validators from sending consensus message if they are not in committee (#549)
  • Istanbul message handler now checks whether the sender is a member of the committee or not (#545)
• Prevents commit twice when a node stops (#530)
• Refactors staking manager (#515)
• Builds and publishes public docker image (#491)
• Improves Trace API
  • Adds txHash into txTraceResult (#488)
  • tracer now supports CREATE2 (#489)
  • tracer now reports transaction revert information (#484)
• Allows DNS address string to start with numeric character for encoding URL (#482)
• Removes vendor directory (#498)

Fixes

• Reorganizes the stop sequence of blockchain module (#535)
• Fixes computeStateDB to not compute for non-existing block number (#483)
• Prevents files to be overwritten via admin.exportChain (#480)