pingcap / pingcap/tiflash

Enhance the obserbility of `ALTER TABLE ... COMPACT TiFLASH REPLICA`

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

Description

Enhancement

  • Get the progress on the whole table to logging
  • Let the user can check the progress through the MySQL client. For example, generate output like admin show ddl jobs; to show the processed rows

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 tracing the ALTER TABLE ... COMPACT TiFLASH REPLICA operation and the existing admin show ddl jobs output path. Define how whole-table processed-row progress should be logged and exposed through the MySQL client, then verify both progress views report the intended work accurately.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp, sql
Domain
databases, observability
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
30/100

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