Weekly update in TiDB

Last week, we landed 73 PRs in the TiDB repository.

Added

• Add the methods of vectorized access for time.Duration stored in Column
• Implement Projection and Tabledual in cascades
• Add opt_rule_blacklist in MySQL tables
• Add the TIDB_HASHAGG and TIDB_STREAMAGG aggregation hints

Improved

• Use HistColl that contains all columns for the estimation of row width
• Use make testSuite to ensure that all testSuitess are enabled
• Replace the context.WithValue string key with the typed struct{} key
• Display the tree-like format of the TRACE statement
• Support the PointGet plan when a table has an alias name

Fixed

• Fix the issue that last_day is incompatible with MySQL
• Fix a bug when comparing a bit with a string
• Control the sending rate of copIteratorTaskSender if keepOrder is true
• Deduce the result type for the multi-value functions like IF that go wrong in some cases
• Merge ranges forBuildColumnRange when the column has the length prefix
• Fix the bug that a generated column can refer only to the generated columns defined prior to it
• Fix the date_add function in SECOND INTERVAL

Weekly update in TiSpark

Last week, we landed 12 PRs in the TiSpark repository.

Fixed

• Fix a bug when doing index scan

Improved

• Bump the gRPC version to 1.17

Weekly update in TiKV and PD

Last week, we landed 42 PRs in the TiKV and PD repositories.

Added

• Add SstWriterBuilder
• Add RealDivide for the RPN function framework

Improved

• Change the error type produced by the Duration parser
• Make codec::Error more ergonomic
• Unify the way of using the tikv_util crate
• Move PD to an independent crate
• Update rust-rocksdb to improve the efficiency of Titan GC
• Deny unknown fields when deserializing the TOML configuration
• Make the PD module more independent
• Adjust the level of storage logs
• Upgrade Rust to nightly-2019-07-19
• Refactor the cluster-related logic

Fixed

• Use the master branch of the Raft library
• Fix the unstable test_auto_gc integration test
• Fix the region size command
• Fix the STORE_ENGINE_SIZE metrics
• Handle requests with multiple handle columns correctly
• Fix the information of lost panic and other logs

New contributors (Thanks!)

tidb:

• TennyZhuang
• lauhg