v1.8.6-RELEASE

Important:
Due to an improvement in how we store transactions a downgrade is not possible.

Upgrade instructions:

• Due to a change to local snapshots format you should convert them using the instructions found here https://docs.iota.org/docs/iri/1.0/tutorials/update-iri. Or download a fresh one.

Notable changes/improvements:

• Faster syncing with less bugs
• Configure DB size with pruning. Use --local-snapshots-db-max-size in the command line or LOCAL_SNAPSHOTS_DB_MAX_SIZE in ini file. i.e LOCAL_SNAPSHOTS_DB_MAX_SIZE = 50 GB
• tips parameter is no longer needed for getInclusionState api call
• No threshold parameter in getBalances api call
• In getTrytes api we shall return null if transaction is missing
• getTips api call has been removed.
• Confirmed transaction trtyes are now ublish under sn_topic in zmq.

Full changelog:

• Do not skip milestones while doing local snapshot (#1868)
• Fix: resolve race in networking layer assigning write operation to key (#1865)
• Fix: Remove condition in send to prevent deadlock in networking (#1864)
• Remove address scan in bootstrap (#1861)
• Fix: LS taking too long (#1843)
• Feature: New milestone stage and solidification pipeline (#1844)
• Use LinkedBlockingQueue to fix sync problems (#1841)
• Up jackson version 2.9.10.3 (#1837)
• Feature: Add transaction solidifier queue (#1821)
• Fix: Update Broadcast Stage logic (#1827)
• Regression: Update pruning test (#1775)
• Test: Fix getinclusion assertion to what it should be (#1819)
• Add transaction solidifier (#1805)
• Move validation to validation service package (#1804)
• Update regression logging (#1803)
• Update regression structure (#1764)
• Rename zmq tx_trytes to trytes (#1772)
• Remove ping pong from reply stage (#1745)
• Fix: reference transaction logic in Regression Test (#1737)
• Feature: Db size in bytes (#1717)
• Fix: broken getInclusionStates API call (#1685)
• Feature: Use one RocksDB instance for spent addresses and local snapshots
• Fix: Stop submitting zero value bundles as aa task into the SpentAddressesService (#1614)
• Fix: lower error severity for faulty neighbor to warning (#1710)
• Fix: sort milestone candidates before analyzing for faster solidification (#1660)
• Change: Regression tests to python3 (#1707)
• Feature: publish sn_trytes in zmq (#1551)
• Change: Count subtypes for pipeline threads (#1681)
• Remove magic numbers from handshake (#1694)
• Fix: Remove neighbors correctly (#1687)
• Fix: improve API error response for storeTransactions (#1686)
• Add spent addresses test (#1489)
• Fix: Correct walker behaviour for alpha == 0 (#1645)
• Allow to configure benchmark from CLI (#1663)
• Fix: Don't resave the transaction itself (#1671)
• Fix: Zmq documentation (#1665)
• Fix: file descriptors leak in IXI module (#1669)
• Fix: Updated db config loading to account for sections (#1667)
• Memory optimization for serializing db objects (#1656)
• Updated RocksDB to 6.3.6 (#1654)
• Feature: Allow users to tinker with RocksDB configuration via file and upgrade RocksDb (#1638)
• Feature: Truncate transaction bytes before persisting them to the database (#1635)
• Update Jdeb plugin (#1639)
• DB_PATH changed in README.md, .factorypath added to .gitignore
• adds config option to disable sync progress printing (#1649)
• Changed closing order for column family
• Updated rocksdb to 6.2.2