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ROADMAP.md

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TiKV Roadmap
Roadmap

TiKV Roadmap

This document defines the roadmap for TiKV development.

Raft

  • Region Merge - Merge small Regions together to reduce overhead
  • Local Read Thread - Process read requests in a local read thread
  • Split Region in Batch - Speed up Region split for large Regions
  • Raft Learner - Support Raft learner to smooth the configuration change process
  • Raft Pre-vote - Support Raft pre-vote to avoid unnecessary leader election on network isolation
  • Joint Consensus - Change multi members safely.
  • Multi-thread Raftstore - Process Region Raft logic in multiple threads
  • Multi-thread apply pool - Apply Region Raft committed entries in multiple threads

Engine

  • Titan - Separate large key-values from LSM-Tree
  • Pluggable Engine Interface - Clean up the engine wrapper code and provide more extendibility

Storage

  • Flow Control - Do flow control in scheduler to avoid write stall in advance

Transaction

  • Optimize transaction conflicts
  • Distributed GC - Distribute MVCC garbage collection control to TiKV

Coprocessor

  • Streaming - Cut large data set into small chunks to optimize memory consumption
  • Chunk Execution - Process data in chunk to improve performance
  • Request Tracing - Provide per-request execution details

Tools

  • TiKV Importer - Speed up data importing by SST file ingestion

Client

  • TiKV client (Rust crate)
  • Batch gRPC Message - Reduce message overhead

PD

  • Optimize Region metadata - Save Region metadata in detached storage engine