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replication: warn if insufficient workers (#13899)

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This should give an early warning if configured replication 
workers are insufficient to meet application workload.
This commit is contained in:
Poorna K 2021-12-13 18:22:56 -08:00 committed by GitHub
parent 109c927dad
commit d422d24278
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1 changed files with 13 additions and 0 deletions
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13
cmd/bucket-replication.go
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@ -62,6 +62,8 @@ const (
ObjectLockRetentionTimestamp = "objectlock-retention-timestamp"
// ObjectLockLegalHoldTimestamp - the last time a legal hold metadata modification happened on this cluster for this object version
ObjectLockLegalHoldTimestamp = "objectlock-legalhold-timestamp"
// ReplicationWorkerMultiplier is suggested worker multiplier if traffic exceeds replication worker capacity
ReplicationWorkerMultiplier = 1.5
)
// gets replication config associated to a given bucket name.
@ -1412,6 +1414,14 @@ func (p *ReplicationPool) ResizeFailedWorkers(n int) {
}
}
// suggestedWorkers recommends an increase in number of workers to meet replication load.
func (p *ReplicationPool) suggestedWorkers(failQueue bool) int {
if failQueue {
return int(float64(p.mrfWorkerSize) * ReplicationWorkerMultiplier)
}
return int(float64(p.workerSize) * ReplicationWorkerMultiplier)
}
func (p *ReplicationPool) queueReplicaFailedTask(ri ReplicateObjectInfo) {
if p == nil {
return
@ -1425,6 +1435,7 @@ func (p *ReplicationPool) queueReplicaFailedTask(ri ReplicateObjectInfo) {
})
case p.mrfReplicaCh <- ri:
default:
logger.LogOnceIf(GlobalContext, fmt.Errorf("WARNING: Replication failed workers could not keep up with healing failures - consider increasing number of replication failed workers with `mc admin config set api replication_failed_workers=%d`", p.suggestedWorkers(true)), replicationSubsystem)
}
}
@ -1450,6 +1461,7 @@ func (p *ReplicationPool) queueReplicaTask(ri ReplicateObjectInfo) {
})
case ch <- ri:
default:
logger.LogOnceIf(GlobalContext, fmt.Errorf("WARNING: Replication workers could not keep up with incoming traffic - consider increasing number of replication workers with `mc admin config set api replication_workers=%d`", p.suggestedWorkers(false)), replicationSubsystem)
}
}
@ -1486,6 +1498,7 @@ func (p *ReplicationPool) queueReplicaDeleteTask(doi DeletedObjectReplicationInf
})
case ch <- doi:
default:
logger.LogOnceIf(GlobalContext, fmt.Errorf("WARNING: Replication workers could not keep up with incoming traffic - consider increasing number of replication workers with `mc admin config set api replication_workers=%d`", p.suggestedWorkers(false)), replicationSubsystem)
}
}