Steem Pre-Release Equality v0.19.1
We recommend all witnesses, seed nodes, and anyone else running the witness plugin should update to
0.19.1requires reindexing from all previous versions.
This is a soft release with miscellaneous bug fixes and enhancements.
Jinja2 Required for Building
We updated the plugin manifest build scripts and added Jinja2 as a dependency to our build process. See building.md for platform specific instructions. Additionally, CMake 3.2 is required (up from 2.8.12).
Smooth Bandwidth Algorithm
There were two big problems with the bandwidth algorithm. The first was an integer overflow that caused
max_virtual_bandwidthto be calculated incorrectly. The second was a programmed behavior that caused bandwidth requirements to increase too rapidly for a small increase in traffic. We have implemented a new algorithm for how to calculate global bandwidth requirements that still protects the blockchain under extreme circumstances, but is less aggressive during small deviations from past behavior. Overall, this should improve the user experience when it comes to bandwidth rate limiting. #1257
Transfers with the sender's private key information will be rejected with a soft fork. The error message recommends the sender change their keys in such an event. The CLI wallet does a similar check against the sender's keys and the keys in the wallet. #1181
Fix Delegations in Account by Key Plugin
The Account by Key plugin now recognizes and tracks accounts that were created with delegation. The problem showed in the CLI wallet when accounts created with delegation could not be found by public key. #1194
There were a number of temporary fields and objects that existed to help transition the blockchain through HF 19. Because those values are cryptographically locked in to the blockchain, we have replaced the temporary fields with constants. #1193
Account History Filter
The Account History plugin now supports filtering ops with a mutually exclusive whitelist or blacklist. The config options are
Block Production Virtual Op
Block production now emits a virtual operation that is trackable in account history. #832
Ignore 0% Interest Virtual Op
Interest virtual operations are now only emitted if there is a non-zero interest payment #1222
Out of Memory Error Messages
When the free space on the memory mapped state file is less than 100 MB, an error message will be displayed every 10 blocks warning of the impending doom and current free space available. #1223
Log Expiring Transactions
When transactions expire from the pending state, they will now be logged at the debug level #1215
Increase p2p Cache Time
Increased the p2p cache time from 15 to 60 seconds #1242
Update get_transaction Disable Message
On Steemit production nodes, we are not supporting the index to return transactions by ID. Previously,
get_transactionfailed silently by not returning a transaction. The call now returns an error message explaining that the API is disabled. #1213
Remove Unused APIs
The following API calls were not in a usable state and we have no plans on supporting them, so they have been removed.