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Replicas should be able to heal if replication is not initialised properly#10943

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deepthi merged 2 commits intovitessio:mainfrom
planetscale:shard-replica-issue
Aug 9, 2022
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Replicas should be able to heal if replication is not initialised properly#10943
deepthi merged 2 commits intovitessio:mainfrom
planetscale:shard-replica-issue

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@GuptaManan100 GuptaManan100 commented Aug 4, 2022 •
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Description

This PR addresses the issue raised in #10955. The way to repair replication once it is stuck as described in #10955, is to call RESET REPLICA and then trying START REPLICA again.

The proposed solution is to always RESET REPLICA in setReplicationSourceLocked when we change the primary source/port or when forceStartReplication is specified.

This allows both VTOrc and the replication manager to be able to address this issue since they both call setReplicationSourceLocked with forceStartReplication.

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  • "Backport me!" label has been added if this change should be backported
  • Tests were added or are not required
  • Documentation was added or is not required

Deployment Notes

@GuptaManan100
feat: add code to also reset replication parameters in setReplication…
83c8bfe 
…SourceLocked when required

Signed-off-by: Manan Gupta <manan@planetscale.com>
@GuptaManan100
test: fix tests to reflect the change
2f6cd6d 
Signed-off-by: Manan Gupta <manan@planetscale.com>
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Hello reviewers! 👋 Please follow this checklist when reviewing this Pull Request.

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deepthi commented Aug 6, 2022

Can you create an issue that describes the problem? I think it is important for this particular issue for us to document it.

@GuptaManan100 GuptaManan100 added Type: Enhancement Logical improvement (somewhere between a bug and feature) Component: Cluster management Component: VTOrc Vitess Orchestrator integration labels Aug 8, 2022
@GuptaManan100 GuptaManan100 marked this pull request as ready for review August 8, 2022 09:20
@GuptaManan100 GuptaManan100 changed the title Shard replica issue Replicas should be able to heal if replication is not initialised properly Aug 8, 2022
mattlord
mattlord approved these changes Aug 8, 2022
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LGTM! ❤️

deepthi
deepthi approved these changes Aug 9, 2022
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Nice work. LGTM

@deepthi deepthi merged commit 7f25195 into vitessio:main Aug 9, 2022
@deepthi deepthi deleted the shard-replica-issue branch August 9, 2022 01:09
systay pushed a commit to planetscale/vitess that referenced this pull request Aug 19, 2022
@GuptaManan100
CherryPick: Replicas should be able to heal if replication is not ini…
8bc83c4 
…tialised properly vitessio#10943 (vitessio#935)

* Replicas should be able to heal if replication is not initialised properly (vitessio#10943)

* feat: add code to also reset replication parameters in setReplicationSourceLocked when required

Signed-off-by: Manan Gupta <manan@planetscale.com>

* test: fix tests to reflect the change

Signed-off-by: Manan Gupta <manan@planetscale.com>

* feat: fix vtworker tests

Signed-off-by: Manan Gupta <manan@planetscale.com>
@deepthi deepthi mentioned this pull request Jun 23, 2023
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@GuptaManan100 GuptaManan100 mentioned this pull request Jun 26, 2023
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4 tasks
timvaillancourt pushed a commit to slackhq/vitess that referenced this pull request Aug 16, 2023
@GuptaManan100 @timvaillancourt
Replicas should be able to heal if replication is not initialised pro…
d0f4614 
…perly (vitessio#10943)

* feat: add code to also reset replication parameters in setReplicationSourceLocked when required

Signed-off-by: Manan Gupta <manan@planetscale.com>

* test: fix tests to reflect the change

Signed-off-by: Manan Gupta <manan@planetscale.com>
@timvaillancourt timvaillancourt mentioned this pull request Aug 16, 2023
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4 tasks
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@mattlord mattlord mattlord approved these changes

@rohit-nayak-ps rohit-nayak-ps Awaiting requested review from rohit-nayak-ps rohit-nayak-ps is a code owner

@shlomi-noach shlomi-noach Awaiting requested review from shlomi-noach shlomi-noach is a code owner

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@deepthi deepthi deepthi approved these changes

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Component: Cluster management Component: VTOrc Vitess Orchestrator integration Type: Enhancement Logical improvement (somewhere between a bug and feature)

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Bug Report: replicas do not self heal when replication initialization fails

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