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Merge pull request #5826 from RainbowMango/pr_update_purge_mode 

Update application failover purge mode comments
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karmada-bot 2024-11-19 11:50:57 +08:00 committed by GitHub
parent ae65de4bc6 d0497d41ce
commit e0d77eb330
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1 changed files with 8 additions and 2 deletions
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10
pkg/apis/policy/v1alpha1/propagation_types.go
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@ -259,13 +259,19 @@ type SuspendClusters struct {
ClusterNames []string `json:"clusterNames,omitempty"` ClusterNames []string `json:"clusterNames,omitempty"`
} }
// PurgeMode represents that how to deal with the legacy applications on the // PurgeMode represents how to deal with the legacy application on the
// cluster from which the application is migrated. // cluster from which the application is migrated.
type PurgeMode string type PurgeMode string
const ( const (
// Immediately represents that Karmada will immediately evict the legacy // Immediately represents that Karmada will immediately evict the legacy
// application. // application. This is useful in scenarios where an application can not
// tolerate two instances running simultaneously.
// For example, the Flink application supports exactly-once state consistency,
// which means it requires that no two instances of the application are running
// at the same time. During a failover, it is crucial to ensure that the old
// application is removed before creating a new one to avoid duplicate
// processing and maintaining state consistency.
Immediately PurgeMode = "Immediately" Immediately PurgeMode = "Immediately"
// Graciously represents that Karmada will wait for the application to // Graciously represents that Karmada will wait for the application to
// come back to healthy on the new cluster or after a timeout is reached // come back to healthy on the new cluster or after a timeout is reached