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https://gitee.com/milvus-io/milvus.git
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59b14d38f5
related: https://github.com/milvus-io/milvus/issues/40838 Signed-off-by: MrPresent-Han <chun.han@gmail.com> Co-authored-by: MrPresent-Han <chun.han@gmail.com>
106 lines
4.2 KiB
C++
106 lines
4.2 KiB
C++
// Licensed to the LF AI & Data foundation under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "arrow/io/api.h"
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#include "arrow/status.h"
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#include "common/EasyAssert.h"
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#include "common/Types.h"
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#include "parquet/arrow/reader.h"
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#include "parquet/column_reader.h"
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#include "storage/PayloadReader.h"
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#include "storage/Util.h"
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namespace milvus::storage {
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PayloadReader::PayloadReader(const milvus::FieldDataPtr& fieldData)
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: column_type_(fieldData->get_data_type()),
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nullable_(fieldData->IsNullable()) {
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field_data_ = fieldData;
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}
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PayloadReader::PayloadReader(const uint8_t* data,
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int length,
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DataType data_type,
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bool nullable,
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bool is_field_data)
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: column_type_(data_type), nullable_(nullable) {
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init(data, length, is_field_data);
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}
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void
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PayloadReader::init(const uint8_t* data, int length, bool is_field_data) {
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if (column_type_ == DataType::NONE) {
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payload_buf_ = std::make_shared<BytesBuf>(data, length);
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} else {
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auto input = std::make_shared<arrow::io::BufferReader>(data, length);
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arrow::MemoryPool* pool = arrow::default_memory_pool();
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// Configure general Parquet reader settings
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auto reader_properties = parquet::ReaderProperties(pool);
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reader_properties.set_buffer_size(4096 * 4);
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// reader_properties.enable_buffered_stream();
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// Configure Arrow-specific Parquet reader settings
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auto arrow_reader_props = parquet::ArrowReaderProperties();
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arrow_reader_props.set_batch_size(128 * 1024); // default 64 * 1024
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arrow_reader_props.set_pre_buffer(false);
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parquet::arrow::FileReaderBuilder reader_builder;
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auto st = reader_builder.Open(input, reader_properties);
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AssertInfo(st.ok(), "file to read file");
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reader_builder.memory_pool(pool);
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reader_builder.properties(arrow_reader_props);
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std::unique_ptr<parquet::arrow::FileReader> arrow_reader;
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st = reader_builder.Build(&arrow_reader);
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AssertInfo(st.ok(), "build file reader");
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int64_t column_index = 0;
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auto file_meta = arrow_reader->parquet_reader()->metadata();
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// dim is unused for sparse float vector
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dim_ =
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(IsVectorDataType(column_type_) &&
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!IsSparseFloatVectorDataType(column_type_))
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? GetDimensionFromFileMetaData(
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file_meta->schema()->Column(column_index), column_type_)
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: 1;
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std::shared_ptr<::arrow::RecordBatchReader> rb_reader;
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st = arrow_reader->GetRecordBatchReader(&rb_reader);
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AssertInfo(st.ok(), "get record batch reader");
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if (is_field_data) {
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auto total_num_rows = file_meta->num_rows();
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field_data_ =
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CreateFieldData(column_type_, nullable_, dim_, total_num_rows);
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for (arrow::Result<std::shared_ptr<arrow::RecordBatch>>
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maybe_batch : *rb_reader) {
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AssertInfo(maybe_batch.ok(), "get batch record success");
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auto array = maybe_batch.ValueOrDie()->column(column_index);
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// to read
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field_data_->FillFieldData(array);
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}
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AssertInfo(field_data_->IsFull(),
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"field data hasn't been filled done");
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} else {
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arrow_reader_ = std::move(arrow_reader);
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record_batch_reader_ = std::move(rb_reader);
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}
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}
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}
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} // namespace milvus::storage
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