pingcap / pingcap/tiflash

Split schema_mutex to keyspace for performance in SchemaSyncer

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type/enhancement
Dominant language
C++
Stars
1k
Forks
423
Avg merge
1d 15h
Merged PRs (30d)
24

Description

Enhancement

Split schema_mutex to keyspace for performance in SchemaSyncer.

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by locating SchemaSyncer and its schema_mutex implementation, then trace how schema operations are synchronized across keyspaces. Define the keyspace-level locking behavior and performance target before changing the mutex structure; done means the design is implemented without breaking schema synchronization and its performance can be measured.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
databases, performance
Issue type
Refactor
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
20/100

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