milvus/internal/common/common.go

// Licensed to the LF AI & Data foundation under one
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// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// 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
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
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// See the License for the specific language governing permissions and
// limitations under the License.

package common

import "encoding/binary"

// system filed id:
// 0: unique row id
// 1: timestamp
// 100: first user field id
// 101: second user field id
// 102: ...

const (
	// StartOfUserFieldID represents the starting ID of the user-defined field
	StartOfUserFieldID = 100

	// RowIDField is the ID of the RowID field reserved by the system
	RowIDField = 0

	// TimeStampField is the ID of the Timestamp field reserved by the system
	TimeStampField = 1

	// RowIDFieldName defines the name of the RowID field
	RowIDFieldName = "RowID"

	// TimeStampFieldName defines the name of the Timestamp field
	TimeStampFieldName = "Timestamp"

	// DefaultShardsNum defines the default number of shards when creating a collection
	DefaultShardsNum = int32(2)

	// InvalidPartitionID indicates that the partition is not specified. It will be set when the partitionName is empty
	InvalidPartitionID = int64(-1)

	// InvalidFieldID indicates that the field does not exist . It will be set when the field is not found.
	InvalidFieldID = int64(-1)

	// NotRegisteredID means node is not registered into etcd.
	NotRegisteredID = int64(-1)

	// InvalidNodeID indicates that node is not valid in querycoord replica or shard cluster.
	InvalidNodeID = int64(-1)
)

// Endian is type alias of binary.LittleEndian.
// Milvus uses little endian by default.
var Endian = binary.LittleEndian

const (
	// SegmentInsertLogPath storage path const for segment insert binlog.
	SegmentInsertLogPath = `insert_log`

	// SegmentDeltaLogPath storage path const for segment delta log.
	SegmentDeltaLogPath = `delta_log`

	// SegmentStatslogPath storage path const for segment stats log.
	SegmentStatslogPath = `stats_log`

	// SegmentIndexPath storage path const for segment index files.
	SegmentIndexPath = `index_files`
)