* kvdb-rocksdb: update to RocksDB 5.8.8

* kvdb-rocksdb: tune RocksDB options

* Switch to level-style compaction
* Increase default block size (16K), and use bigger blocks for HDDs (64K)
* Increase default file size base (64MB SSDs, 256MB HDDs)
* Create a single block cache shared across all column families
* Tune compaction settings using RocksDB helper functions, taking into account
  memory budget spread across all columns
* Configure backgrounds jobs based on the number of CPUs
* Set some default recommended settings

* ethcore: remove unused config blockchain.db_cache_size

* parity: increase default value for db_cache_size

* kvdb-rocksdb: enable compression on all levels

* kvdb-rocksdb: set global db_write_bufer_size

* kvdb-rocksdb: reduce db_write_bufer_size to force earlier flushing

* kvdb-rocksdb: use master branch for rust-rocksdb dependency

* separate migration from util and make its dependencies into libs:

* snappy
* kvdb
* error
* common

* renamed common -> macros

* util error does not depend on snappy module

* ethsync does not depend on util nor ethcore_error

* nibbleslice and nibblevec merged with patricia_trie crate

* removed unused dependencies from util

* util journaldb traits does not need to be public

* util_error

* fixed ethcore compile error

* ignore .swo files

* Update chain.rs

* move common forks and parameters to common params

* port specs over to new format

* fix RPC tests

* parity-machine skeleton

* remove block type

* extract out ethereum-specific methods into EthereumMachine

* beginning to integrate Machine into engines. dealing with stale transitions in Ethash

* initial porting to machine

* move block reward back into engine

* abstract block reward logic

* move last hash and DAO HF logic into machine

* begin making engine function parameters generic

* abstract epoch verifier and ethash block reward logic

* instantiate special ethereummachine for ethash in spec

* optional full verification in verify_block_family

* re-instate tx_filter in a way that works for all engines

* fix warnings

* fix most tests, further generalize engine trait

* uncomment nullengine, get ethcore tests compiling

* fix warnings

* update a bunch of specs

* re-enable engine signer, validator set, and transition handler

* migrate basic_authority engine

* move last hashes into executedblock

* port tendermint

* make all ethcore tests pass

* json-tests compilation

* fix RPC tests: change in gas limit for new block changed PoW hash

* fix minor grumbles

* validate chainspecs

* fix broken import

* fix transaction verification for pre-homestead

This reverts commit 899538ae.

Marek Kotewicz authored Sep 05, 2017 and Arkadiy Paronyan committed Sep 05, 2017

* fixed master

* Revert "Merge pull request #6370 from paritytech/light-poa"

This reverts commit 3c60f99d, reversing
changes made to b731ccea.

asynchronous rob authored Jul 27, 2017 and Arkadiy Paronyan committed Jul 27, 2017

* no seal checking

* import command and --no-seal-check for light client

* fix eth_call

* tweak registry dapps lookup

* ignore failed requests to non-server peers

asynchronous rob authored Jul 26, 2017 and Arkadiy Paronyan committed Jul 26, 2017

* light client fixes

* fix memory-lru-cache

* clear pending reqs on disconnect

* split out types into separate crate

* split out evm into its own crate

asynchronous rob authored Jul 10, 2017 and Arkadiy Paronyan committed Jul 10, 2017

* do more validation of imported headers in light client

* generalize informant with traits

* informant implementation for light client

* make comment into TODO

* fix broken test

* disable full checking of headers in light client in sync tests

This is a huge change, which includes some changes to replace code that
originally cloned to reuse allocations instead. The updated
`elastic-array` crate renames its consuming `Vec`-conversion method to
`into_vec`, which means that I can do a simple
`sed -i 's/to_vec/into_vec/'` and then fix the compilation errors.

This commit is probably a minor performance win and definitely a
significant readability win.

Tomasz Drwięga authored May 23, 2017 and Arkadiy Paronyan committed May 23, 2017

* Signer subscription.

* Fixing RPC tests.

* Block Headers eth-pubsub.

* PubSub for light client.

* Fixing tests.

* Updating to proper jsonrpc version.

* Update to correct tests.

* Fixing tests.

* EIP-86

* Disable EIP-86 auto activation for now

* block_hash method for LightChainClient

* abstraction and futures-based eth_filter

* log fetching for light client

* add eth-filter delegate

* eth_block fetching RPCs

* return default accounts from on_demand

* fix early exit

* BlockNumber -> BlockId

* early exit for no known block number.