pingcap / pingcap/ticdc

Changefeed may not be removed successfully

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severity/major type/bug
Dominant language
Go
Stars
56
Forks
63
Avg merge
2d 20h
Merged PRs (30d)
34

Description

What did you do?

create a changefeed under crawler workload for a while, and remove the changefeed

What did you expect to see?

the changefeed is removed successfully

What did you see instead?

the changefeed is not removed. Because one dispatcher can not be removed successfully

Versions of the cluster

Upstream TiDB cluster version (execute SELECT tidb_version(); in a MySQL client):

(paste TiDB cluster version here)

Upstream TiKV version (execute tikv-server --version):

(paste TiKV version here)

TiCDC version (execute cdc version):

(paste TiCDC version here)

Contributor guide

Open the contributing guide

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

No source file, test, or entry point is named. Start by reproducing the failure with a changefeed under crawler workload, then inspect why one dispatcher cannot be removed successfully. Done means the changefeed is removed successfully after the workload has run for a while.

Written by the indexing model from the issue text.

Assessment

Tech stack
go
Domain
distributed-systems
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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