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Some regions failed to be deregistered after unregistering the subscription

type/bugThe issue is confirmed as a bug.The issue is confirmed as a bug.

Status: Open.

#4217 In pingcap/ticdc;

· lidezhu opened on Feb 14, 2026

Changefeed resolvedTs lag on dispatcher manager node does not decrease after restart

may-affects-9.0

severity/major

type/bugThe issue is confirmed as a bug.The issue is confirmed as a bug.

Status: Open.

#4203 In pingcap/ticdc;

· asddongmen opened on Feb 13, 2026

Changefeed checkpoint cannot proceed In massive inserts scenario

type/bugThe issue is confirmed as a bug.The issue is confirmed as a bug.

Status: Open.

#4202 In pingcap/ticdc;

· lilinghai opened on Feb 13, 2026

The ["topic's <code>max.message.bytes</code> less than the <code>max-message-bytes</code>..."] warning log should include the Kafka topic name and changefeed name

Status: Open.

#4200 In pingcap/ticdc;

· kennytm opened on Feb 12, 2026

Improve eventBroker Scan Strategy with Memory-Aware Scan Window Algorithm

type/enhancementThe issue or PR belongs to an enhancement.The issue or PR belongs to an enhancement.

Status: Open.

#4172 In pingcap/ticdc;

· asddongmen opened on Feb 9, 2026

Possible memory leak in subscriptionClient.errCache

severity/minor

type/bugThe issue is confirmed as a bug.The issue is confirmed as a bug.

Status: Open.

#4143 In pingcap/ticdc;

· wk989898 opened on Feb 6, 2026

Possible memory leak caused by slice

type/bugThe issue is confirmed as a bug.The issue is confirmed as a bug.

Status: Open.

#4137 In pingcap/ticdc;

· wk989898 opened on Feb 5, 2026

kafka sink report in.sync.replicas not enough cause the whole changefeed failed and then checkpoint lag increase a lot

Status: Open.

#4136 In pingcap/ticdc;

· 3AceShowHand opened on Feb 5, 2026

Unverified changefeed updates are still saved into Coordinator memory despite not persisted into backend

type/bugThe issue is confirmed as a bug.The issue is confirmed as a bug.

Status: Open.

#4133 In pingcap/ticdc;

· kennytm opened on Feb 4, 2026

Develop a tool to validate kafka sink output across new arch and old arch

type/feature-requestCategorizes issue or PR as related to a new feature.Categorizes issue or PR as related to a new feature.

Status: Open.

#4127 In pingcap/ticdc;

· lidezhu opened on Feb 4, 2026

Add a prerequisite assumption verification test to tidb for sharedSchema

type/enhancementThe issue or PR belongs to an enhancement.The issue or PR belongs to an enhancement.

Status: Open.

#4125 In pingcap/ticdc;

· hongyunyan opened on Feb 3, 2026

Move S3 connectivity check from cdc cli to cdc server when creating changefeeds with redo log

type/enhancementThe issue or PR belongs to an enhancement.The issue or PR belongs to an enhancement.

Status: Open.

#4122 In pingcap/ticdc;

· lidezhu opened on Feb 3, 2026