milvus-io/milvus

[Feature]: no available shard leaders: channel not available

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#48079 opened on Mar 6, 2026

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help wantedkind/feature

Description

Is there an existing issue for this?

  • I have searched the existing issues

Is your feature request related to a problem? Please describe.

milvus 2.6 集群下使用偶尔报这个错误，no available shard leaders: channel not available[channel=milvus-rootcoord-dml_15_464562965934556664v0]

Describe the solution you'd like.

No response

Describe an alternate solution.

No response

Anything else? (Additional Context)

No response

Contributor guide

Tech stack
go
Domain
databasebackend
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
5
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
over 1 week
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
blocked
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
needs investigation
Prerequisites
Milvus architectureGodistributed systemschannel management
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
15
Research direction
Investigate the root cause of the 'no available shard leaders' error in Milvus 2.6 cluster mode. Look at the shard leader election and channel allocation logic in the internal/distributed package. Review existing comments on issue #48079 for additional context. Consult maintainers for reproduction steps and expected behavior.