Java Kernel v1.1

This is a recommended update release.

The release mainly enhanced kernel memory usage and corrects a number of bugs. It is highly recommended to update to this version. Users who wish to use RocksDB must re-sync a node after changing the database vendor in the config.xml file.

Features:

• Updated RPC library while maintaining legacy support with aion_pool2.
• Limit the eth_getLogs to querying at most 1000 blocks.

Bug fixes:

• Queried event logs includes contract creation logs.
• The internal miner updates the block template timestamp every second.
• Block creation enhanced to prevent attempts at creating consecutive blocks of the same type.
• Sync stops the import loop early on NO_PARENT result.
• P2p and sync ensure that header & body requests are sent in the correct order.
• Reduced memory usage by limiting the number of messages to and from the network to avoid OOM issue.
• Re-added path for re-connecting to peers from the boot list.

Enhancements:

• RocksDB tune-up: good alternative to LevelDB.
• Mining block template does not recalculate system time.
• Faster offloading of blocks to storage during sync.
• Enhanced heuristic for sending header requests during sync.
• Adjusted worker threads count to use the system available processors times two, up to 32.
• Revised transaction parsing and root validation.
• Reduced use of singleton classes in the code.
• Revised classes for reading the kernel configuration.
• Added header validation in block import as future-proofing.
• Enhanced launch script.
• Unit tests for re-branching after Unity fork and for encode/decode staking & mining blocks.
• Documentation and message logging updates.