milvus/internal/datanode/segment_sync_policy.go

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// distributed with this work for additional information
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// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
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package datanode

import (
	"github.com/milvus-io/milvus/internal/util/tsoutil"
)

// segmentSyncPolicy sync policy applies to segment
type segmentSyncPolicy func(segment *Segment, ts Timestamp) bool

// syncPeriodically get segmentSyncPolicy with segment sync periodically.
func syncPeriodically() segmentSyncPolicy {
	return func(segment *Segment, ts Timestamp) bool {
		endTime := tsoutil.PhysicalTime(ts)
		lastSyncTime := tsoutil.PhysicalTime(segment.lastSyncTs)
		return endTime.Sub(lastSyncTime) >= Params.DataNodeCfg.SyncPeriod &&
			!segment.isBufferEmpty()
	}
}