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https://issues.apache.org/jira/browse/RATIS-2300?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xinhao Gu updated RATIS-2300:
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Attachment: image-2025-05-20-12-06-57-540.png
> New Leader Repeatedly Times Out When Sending RPCs to Old Leader, Causing
> System Hang
> ------------------------------------------------------------------------------------
>
> Key: RATIS-2300
> URL: https://issues.apache.org/jira/browse/RATIS-2300
> Project: Ratis
> Issue Type: Bug
> Reporter: Xinhao Gu
> Assignee: Xinhao Gu
> Priority: Major
> Attachments: image-2025-05-20-12-06-57-540.png
>
>
> I've encountered an issue where, after a leader election, the newly elected
> leader consistently fails to communicate with the previous (old) leader.
> Specifically, RPCs (such as heartbeats or appendEntries requests) sent from
> the new leader to the old leader always time out.
>
> {code:java}
> 2025-05-18 01:09:14,974 [timer0] WARN o.a.r.g.s.GrpcLogAppender:441 -
> 1@group-000000000000->0-GrpcLogAppender: Timed out HEARTBEAT appendEntries,
> errorCount=1, request=AppendEntriesRequest:cid=0,entriesCount=0 2025-05-18
> 01:09:14,975 [timer1] WARN o.a.r.g.s.GrpcLogAppender:441 -
> 1@group-000000000000->0-GrpcLogAppender: Timed out HEARTBEAT appendEntries,
> errorCount=2, request=AppendEntriesRequest:cid=1,entriesCount=0 2025-05-18
> 01:09:14,976 [timer2] WARN o.a.r.g.s.GrpcLogAppender:441 -
> 1@group-000000000000->0-GrpcLogAppender: Timed out appendEntries,
> errorCount=3,
> request=AppendEntriesRequest:cid=2,entriesCount=4,entries=(t:2732,
> i:2069702)...(t:2732, i:2069705) 2025-05-18 01:09:15,271 [timer4] WARN
> o.a.r.g.s.GrpcLogAppender:441 - 1@group-000000000000->0-GrpcLogAppender:
> Timed out HEARTBEAT appendEntries, errorCount=4,
> request=AppendEntriesRequest:cid=3,entriesCount=0 2025-05-18 01:09:15,773
> [timer5] WARN o.a.r.g.s.GrpcLogAppender:441 -
> 1@group-000000000000->0-GrpcLogAppender: Timed out HEARTBEAT appendEntries,
> errorCount=5, request=AppendEntriesRequest:cid=4,entriesCount=0 2025-05-18
> 01:09:16,274 [timer7] WARN o.a.r.g.s.GrpcLogAppender:441 -
> 1@group-000000000000->0-GrpcLogAppender: Timed out HEARTBEAT appendEntries,
> errorCount=6, request=AppendEntriesRequest:cid=5,entriesCount=0 2025-05-18
> 01:09:16,775 [timer0] WARN o.a.r.g.s.GrpcLogAppender:441 -
> 1@group-000000000000->0-GrpcLogAppender: Timed out HEARTBEAT appendEntries,
> errorCount=7, request=AppendEntriesRequest:cid=6,entriesCount=0 2025-05-18
> 01:09:17,274 [timer2] WARN o.a.r.g.s.GrpcLogAppender:441 -
> 1@group-000000000000->0-GrpcLogAppender: Timed out HEARTBEAT appendEntries,
> errorCount=8, request=AppendEntriesRequest:cid=7,entriesCount=0 {code}
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