Online DDL: introducing ddl_strategy -singleton-context flag
#7946
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Signed-off-by: Shlomi Noach <[email protected]>
Signed-off-by: Shlomi Noach <[email protected]>
8 tasks
Signed-off-by: Shlomi Noach <[email protected]>
Signed-off-by: Shlomi Noach <[email protected]>
Signed-off-by: Shlomi Noach <[email protected]>
Signed-off-by: Shlomi Noach <[email protected]>
Signed-off-by: Shlomi Noach <[email protected]>
Signed-off-by: Shlomi Noach <[email protected]>
|
tests added and looking good. |
Signed-off-by: Shlomi Noach <[email protected]>
Signed-off-by: Shlomi Noach <[email protected]>
systay
reviewed
Apr 26, 2021
go/vt/vttablet/onlineddl/executor.go
Outdated
| case onlineDDL.StrategySetting().IsSingleton(): | ||
| // We will reject this migration if there's any pending migration | ||
| if len(pendingUUIDs) > 0 { | ||
| return result, fmt.Errorf("singleton migration rejected: found pending migrations [%s]", strings.Join(pendingUUIDs, ", ")) |
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vterrors should be used, right?
Signed-off-by: Shlomi Noach <[email protected]>
systay
added
Component: Query Serving
Type: Enhancement
3 tasks
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Description
Followup to #7785
This PR introduces
ddl_strategynow supports-singleton-contextflag.-singletonrejects a migration if there's any other pending migration-singleton-contextrejects a migration is there's any other pending migration that has a different migration context.With
-singleton-context, it is possible to submit multiple migrations which all share the same migration context. For example, the following is allowed:The above submits three migrations. All three will be accepted. For comparison, running the above with
-singletonwould accept the first migration (drop table if exists t1) and reject the other two.Related Issue(s)
Checklist
Deployment Notes
Impacted Areas in Vitess
Components that this PR will affect: