pingcap / pingcap/ticdc

changefeed stuck with continuous info `empty or unknown cdc error"] [subscriptionID=2] [error="congested:<region_id:xxxxx >`

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@3AceShowHand is already working on this.

Since Apr 22, 2025.

type/bug
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Go
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2d 20h
Merged PRs (30d)
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Description

What did you do?

create a changefeed to do incremental scan on crawler workload

What did you expect to see?

changefeed work well

What did you see instead?

changefeed stuck, and report log empty or unknown cdc error"] [subscriptionID=2] [error="congested:<region_id:xxxxx >

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)

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