pingcap / pingcap/ticdc

grafana event store/write duration < 0

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

Description

What did you do?
Image
What did you expect to see?

No response

What did you see instead?

duration >= 0

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

Start with the attached screenshot and the reported Grafana event store/write duration metric. Reproduce the observation using the TiCDC, TiKV, and TiDB version information requested in the issue, which is currently missing. Done means identifying why the duration is negative and confirming the reported duration is nonnegative.

Written by the indexing model from the issue text.

Assessment

Tech stack
grafana
Domain
observability
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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