milvus/internal/util/importutilv2/parquet/util.go
yihao.dai c5918290e6
feat: Add import executor and manager for datanode (#29438)
This PR introduces novel importv2 roles for datanode:
1. Executor: To execute tasks, a import task will be divided into the
following steps: read data -> hash data -> sync data;
2. Manager: To manage all the tasks;

issue: https://github.com/milvus-io/milvus/issues/28521

---------

Signed-off-by: bigsheeper <yihao.dai@zilliz.com>
2024-01-31 20:45:04 +08:00

188 lines
6.1 KiB
Go

// Licensed to the LF AI & Data foundation under one
// or more contributor license agreements. See the NOTICE file
// 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,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package parquet
import (
"context"
"fmt"
"github.com/apache/arrow/go/v12/arrow"
"github.com/apache/arrow/go/v12/parquet/pqarrow"
"github.com/samber/lo"
"github.com/milvus-io/milvus-proto/go-api/v2/schemapb"
"github.com/milvus-io/milvus/pkg/util/merr"
"github.com/milvus-io/milvus/pkg/util/typeutil"
)
func WrapTypeErr(expect string, actual string, field *schemapb.FieldSchema) error {
return merr.WrapErrImportFailed(
fmt.Sprintf("expect '%s' type for field '%s', but got '%s' type",
expect, field.GetName(), actual))
}
func calcBufferSize(blockSize int, schema *schemapb.CollectionSchema) int {
if len(schema.GetFields()) <= 0 {
return blockSize
}
return blockSize / len(schema.GetFields())
}
func CreateFieldReaders(ctx context.Context, fileReader *pqarrow.FileReader, schema *schemapb.CollectionSchema) (map[int64]*FieldReader, error) {
nameToField := lo.KeyBy(schema.GetFields(), func(field *schemapb.FieldSchema) string {
return field.GetName()
})
pqSchema, err := fileReader.Schema()
if err != nil {
return nil, merr.WrapErrImportFailed(fmt.Sprintf("get parquet schema failed, err=%v", err))
}
crs := make(map[int64]*FieldReader)
for i, pqField := range pqSchema.Fields() {
field, ok := nameToField[pqField.Name]
if !ok {
// TODO @cai.zhang: handle dynamic field
return nil, merr.WrapErrImportFailed(fmt.Sprintf("the field: %s is not in schema, "+
"if it's a dynamic field, please reformat data by bulk_writer", pqField.Name))
}
if field.GetIsPrimaryKey() && field.GetAutoID() {
return nil, merr.WrapErrImportFailed(
fmt.Sprintf("the primary key '%s' is auto-generated, no need to provide", field.GetName()))
}
arrowType, isList := convertArrowSchemaToDataType(pqField, false)
dataType := field.GetDataType()
if isList {
if !typeutil.IsVectorType(dataType) && dataType != schemapb.DataType_Array {
return nil, WrapTypeErr(dataType.String(), pqField.Type.Name(), field)
}
if dataType == schemapb.DataType_Array {
dataType = field.GetElementType()
}
}
if !isConvertible(arrowType, dataType, isList) {
return nil, WrapTypeErr(dataType.String(), pqField.Type.Name(), field)
}
cr, err := NewFieldReader(ctx, fileReader, i, field)
if err != nil {
return nil, err
}
if _, ok = crs[field.GetFieldID()]; ok {
return nil, merr.WrapErrImportFailed(
fmt.Sprintf("there is multi field with name: %s", field.GetName()))
}
crs[field.GetFieldID()] = cr
}
for _, field := range nameToField {
if (field.GetIsPrimaryKey() && field.GetAutoID()) || field.GetIsDynamic() {
continue
}
if _, ok := crs[field.GetFieldID()]; !ok {
return nil, merr.WrapErrImportFailed(
fmt.Sprintf("no parquet field for milvus file '%s'", field.GetName()))
}
}
return crs, nil
}
func convertArrowSchemaToDataType(field arrow.Field, isList bool) (schemapb.DataType, bool) {
switch field.Type.ID() {
case arrow.BOOL:
return schemapb.DataType_Bool, false
case arrow.UINT8:
if isList {
return schemapb.DataType_BinaryVector, false
}
return schemapb.DataType_None, false
case arrow.INT8:
return schemapb.DataType_Int8, false
case arrow.INT16:
return schemapb.DataType_Int16, false
case arrow.INT32:
return schemapb.DataType_Int32, false
case arrow.INT64:
return schemapb.DataType_Int64, false
case arrow.FLOAT16:
if isList {
return schemapb.DataType_Float16Vector, false
}
return schemapb.DataType_None, false
case arrow.FLOAT32:
return schemapb.DataType_Float, false
case arrow.FLOAT64:
return schemapb.DataType_Double, false
case arrow.STRING:
return schemapb.DataType_VarChar, false
case arrow.BINARY:
return schemapb.DataType_BinaryVector, false
case arrow.LIST:
elementType, _ := convertArrowSchemaToDataType(field.Type.(*arrow.ListType).ElemField(), true)
return elementType, true
default:
return schemapb.DataType_None, false
}
}
func isConvertible(src, dst schemapb.DataType, isList bool) bool {
switch src {
case schemapb.DataType_Bool:
return typeutil.IsBoolType(dst)
case schemapb.DataType_Int8:
return typeutil.IsArithmetic(dst)
case schemapb.DataType_Int16:
return typeutil.IsArithmetic(dst) && dst != schemapb.DataType_Int8
case schemapb.DataType_Int32:
return typeutil.IsArithmetic(dst) && dst != schemapb.DataType_Int8 && dst != schemapb.DataType_Int16
case schemapb.DataType_Int64:
return typeutil.IsFloatingType(dst) || dst == schemapb.DataType_Int64
case schemapb.DataType_Float:
if isList && dst == schemapb.DataType_FloatVector {
return true
}
return typeutil.IsFloatingType(dst)
case schemapb.DataType_Double:
if isList && dst == schemapb.DataType_FloatVector {
return true
}
return dst == schemapb.DataType_Double
case schemapb.DataType_String, schemapb.DataType_VarChar:
return typeutil.IsStringType(dst) || typeutil.IsJSONType(dst)
case schemapb.DataType_JSON:
return typeutil.IsJSONType(dst)
case schemapb.DataType_BinaryVector:
return dst == schemapb.DataType_BinaryVector
case schemapb.DataType_Float16Vector:
return dst == schemapb.DataType_Float16Vector
default:
return false
}
}
func estimateReadCountPerBatch(bufferSize int, schema *schemapb.CollectionSchema) (int64, error) {
sizePerRecord, err := typeutil.EstimateMaxSizePerRecord(schema)
if err != nil {
return 0, err
}
if 1000*sizePerRecord <= bufferSize {
return 1000, nil
}
return int64(bufferSize) / int64(sizePerRecord), nil
}