mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-27 01:51:59 +00:00
Remove ParquetBlockOutputStream.
This commit is contained in:
Nikolai Kochetov
parent
fcecbbda73
commit
529e06e5cb
@ -207,7 +207,7 @@ void registerInputFormatCSV(FormatFactory & factory);
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void registerOutputFormatCSV(FormatFactory & factory);
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void registerInputFormatTSKV(FormatFactory & factory);
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void registerOutputFormatTSKV(FormatFactory & factory);
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void registerOutputFormatParquet(FormatFactory & factory);
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void registerOutputFormatTSKV(FormatFactory & factory);
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void registerInputFormatProtobuf(FormatFactory & factory);
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void registerOutputFormatProtobuf(FormatFactory & factory);
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@ -268,7 +268,6 @@ FormatFactory::FormatFactory()
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registerOutputFormatTSKV(*this);
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registerInputFormatProtobuf(*this);
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registerOutputFormatProtobuf(*this);
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registerOutputFormatParquet(*this);
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registerInputFormatProcessorNative(*this);
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registerOutputFormatProcessorNative(*this);
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@ -1,451 +0,0 @@
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#include "config_formats.h"
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#if USE_PARQUET
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# include "ParquetBlockOutputStream.h"
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// TODO: clean includes
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# include <Columns/ColumnDecimal.h>
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# include <Columns/ColumnFixedString.h>
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# include <Columns/ColumnNullable.h>
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# include <Columns/ColumnString.h>
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# include <Columns/ColumnVector.h>
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# include <Columns/ColumnsNumber.h>
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# include <Core/ColumnWithTypeAndName.h>
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# include <Core/callOnTypeIndex.h>
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# include <DataTypes/DataTypeDateTime.h>
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# include <DataTypes/DataTypeNullable.h>
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# include <DataTypes/DataTypesDecimal.h>
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# include <DataStreams/SquashingBlockOutputStream.h>
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# include <Formats/FormatFactory.h>
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# include <IO/WriteHelpers.h>
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# include <arrow/api.h>
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# include <arrow/io/api.h>
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# include <arrow/util/decimal.h>
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# include <parquet/arrow/writer.h>
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# include <parquet/exception.h>
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# include <parquet/util/memory.h>
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namespace DB
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{
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namespace ErrorCodes
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{
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extern const int UNKNOWN_EXCEPTION;
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extern const int UNKNOWN_TYPE;
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}
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ParquetBlockOutputStream::ParquetBlockOutputStream(WriteBuffer & ostr, const Block & header, const FormatSettings & format_settings) : ostr{ostr}, header{header}, format_settings{format_settings}
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{
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}
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void ParquetBlockOutputStream::flush()
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{
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ostr.next();
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}
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void checkStatus(arrow::Status & status, const std::string & column_name)
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{
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if (!status.ok())
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throw Exception{"Error with a parquet column \"" + column_name + "\": " + status.ToString(), ErrorCodes::UNKNOWN_EXCEPTION};
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}
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template <typename NumericType, typename ArrowBuilderType>
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void fillArrowArrayWithNumericColumnData(
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ColumnPtr write_column, std::shared_ptr<arrow::Array> & arrow_array, const PaddedPODArray<UInt8> * null_bytemap)
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{
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const PaddedPODArray<NumericType> & internal_data = static_cast<const ColumnVector<NumericType> &>(*write_column).getData();
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ArrowBuilderType builder;
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arrow::Status status;
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const UInt8 * arrow_null_bytemap_raw_ptr = nullptr;
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PaddedPODArray<UInt8> arrow_null_bytemap;
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if (null_bytemap)
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{
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/// Invert values since Arrow interprets 1 as a non-null value, while CH as a null
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arrow_null_bytemap.reserve(null_bytemap->size());
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for (size_t i = 0, size = null_bytemap->size(); i < size; ++i)
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arrow_null_bytemap.emplace_back(1 ^ (*null_bytemap)[i]);
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arrow_null_bytemap_raw_ptr = arrow_null_bytemap.data();
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}
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status = builder.AppendValues(internal_data.data(), internal_data.size(), arrow_null_bytemap_raw_ptr);
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checkStatus(status, write_column->getName());
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status = builder.Finish(&arrow_array);
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checkStatus(status, write_column->getName());
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}
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template <typename ColumnType>
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void fillArrowArrayWithStringColumnData(
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ColumnPtr write_column, std::shared_ptr<arrow::Array> & arrow_array, const PaddedPODArray<UInt8> * null_bytemap)
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{
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const auto & internal_column = static_cast<const ColumnType &>(*write_column);
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arrow::StringBuilder builder;
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arrow::Status status;
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for (size_t string_i = 0, size = internal_column.size(); string_i < size; ++string_i)
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{
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if (null_bytemap && (*null_bytemap)[string_i])
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{
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status = builder.AppendNull();
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}
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else
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{
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StringRef string_ref = internal_column.getDataAt(string_i);
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status = builder.Append(string_ref.data, string_ref.size);
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}
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checkStatus(status, write_column->getName());
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}
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status = builder.Finish(&arrow_array);
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checkStatus(status, write_column->getName());
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}
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void fillArrowArrayWithDateColumnData(
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ColumnPtr write_column, std::shared_ptr<arrow::Array> & arrow_array, const PaddedPODArray<UInt8> * null_bytemap)
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{
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const PaddedPODArray<UInt16> & internal_data = static_cast<const ColumnVector<UInt16> &>(*write_column).getData();
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//arrow::Date32Builder date_builder;
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arrow::UInt16Builder builder;
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arrow::Status status;
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for (size_t value_i = 0, size = internal_data.size(); value_i < size; ++value_i)
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{
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if (null_bytemap && (*null_bytemap)[value_i])
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status = builder.AppendNull();
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else
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/// Implicitly converts UInt16 to Int32
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status = builder.Append(internal_data[value_i]);
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checkStatus(status, write_column->getName());
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}
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status = builder.Finish(&arrow_array);
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checkStatus(status, write_column->getName());
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}
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void fillArrowArrayWithDateTimeColumnData(
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ColumnPtr write_column, std::shared_ptr<arrow::Array> & arrow_array, const PaddedPODArray<UInt8> * null_bytemap)
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{
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auto & internal_data = static_cast<const ColumnVector<UInt32> &>(*write_column).getData();
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//arrow::Date64Builder builder;
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arrow::UInt32Builder builder;
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arrow::Status status;
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for (size_t value_i = 0, size = internal_data.size(); value_i < size; ++value_i)
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{
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if (null_bytemap && (*null_bytemap)[value_i])
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status = builder.AppendNull();
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else
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/// Implicitly converts UInt16 to Int32
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//status = date_builder.Append(static_cast<int64_t>(internal_data[value_i]) * 1000); // now ms. TODO check other units
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status = builder.Append(internal_data[value_i]);
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checkStatus(status, write_column->getName());
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}
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status = builder.Finish(&arrow_array);
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checkStatus(status, write_column->getName());
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}
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template <typename DataType>
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void fillArrowArrayWithDecimalColumnData(
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ColumnPtr write_column,
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std::shared_ptr<arrow::Array> & arrow_array,
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const PaddedPODArray<UInt8> * null_bytemap,
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const DataType * decimal_type)
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{
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const auto & column = static_cast<const typename DataType::ColumnType &>(*write_column);
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arrow::DecimalBuilder builder(arrow::decimal(decimal_type->getPrecision(), decimal_type->getScale()));
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arrow::Status status;
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for (size_t value_i = 0, size = column.size(); value_i < size; ++value_i)
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{
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if (null_bytemap && (*null_bytemap)[value_i])
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status = builder.AppendNull();
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else
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status = builder.Append(
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arrow::Decimal128(reinterpret_cast<const uint8_t *>(&column.getElement(value_i).value))); // TODO: try copy column
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checkStatus(status, write_column->getName());
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}
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status = builder.Finish(&arrow_array);
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checkStatus(status, write_column->getName());
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/* TODO column copy
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const auto & internal_data = static_cast<const typename DataType::ColumnType &>(*write_column).getData();
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//ArrowBuilderType numeric_builder;
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arrow::DecimalBuilder builder(arrow::decimal(decimal_type->getPrecision(), decimal_type->getScale()));
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arrow::Status status;
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const uint8_t * arrow_null_bytemap_raw_ptr = nullptr;
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PaddedPODArray<UInt8> arrow_null_bytemap;
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if (null_bytemap)
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{
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/// Invert values since Arrow interprets 1 as a non-null value, while CH as a null
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arrow_null_bytemap.reserve(null_bytemap->size());
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for (size_t i = 0, size = null_bytemap->size(); i < size; ++i)
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arrow_null_bytemap.emplace_back(1 ^ (*null_bytemap)[i]);
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arrow_null_bytemap_raw_ptr = arrow_null_bytemap.data();
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}
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status = builder.AppendValues(reinterpret_cast<const uint8_t*>(internal_data.data()), internal_data.size(), arrow_null_bytemap_raw_ptr);
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checkStatus(status, write_column->getName());
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status = builder.Finish(&arrow_array);
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checkStatus(status, write_column->getName());
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*/
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}
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# define FOR_INTERNAL_NUMERIC_TYPES(M) \
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M(UInt8, arrow::UInt8Builder) \
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M(Int8, arrow::Int8Builder) \
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M(UInt16, arrow::UInt16Builder) \
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M(Int16, arrow::Int16Builder) \
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M(UInt32, arrow::UInt32Builder) \
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M(Int32, arrow::Int32Builder) \
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M(UInt64, arrow::UInt64Builder) \
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M(Int64, arrow::Int64Builder) \
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M(Float32, arrow::FloatBuilder) \
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M(Float64, arrow::DoubleBuilder)
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const std::unordered_map<String, std::shared_ptr<arrow::DataType>> internal_type_to_arrow_type = {
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{"UInt8", arrow::uint8()},
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{"Int8", arrow::int8()},
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{"UInt16", arrow::uint16()},
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{"Int16", arrow::int16()},
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{"UInt32", arrow::uint32()},
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{"Int32", arrow::int32()},
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{"UInt64", arrow::uint64()},
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{"Int64", arrow::int64()},
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{"Float32", arrow::float32()},
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{"Float64", arrow::float64()},
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//{"Date", arrow::date64()},
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//{"Date", arrow::date32()},
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{"Date", arrow::uint16()}, // CHECK
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//{"DateTime", arrow::date64()}, // BUG! saves as date32
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{"DateTime", arrow::uint32()},
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// TODO: ClickHouse can actually store non-utf8 strings!
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{"String", arrow::utf8()},
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{"FixedString", arrow::utf8()},
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};
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const PaddedPODArray<UInt8> * extractNullBytemapPtr(ColumnPtr column)
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{
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ColumnPtr null_column = static_cast<const ColumnNullable &>(*column).getNullMapColumnPtr();
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const PaddedPODArray<UInt8> & null_bytemap = static_cast<const ColumnVector<UInt8> &>(*null_column).getData();
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return &null_bytemap;
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}
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class OstreamOutputStream : public parquet::OutputStream
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{
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public:
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explicit OstreamOutputStream(WriteBuffer & ostr_) : ostr(ostr_) {}
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virtual ~OstreamOutputStream() {}
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virtual void Close() {}
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virtual int64_t Tell() { return total_length; }
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virtual void Write(const uint8_t * data, int64_t length)
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{
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ostr.write(reinterpret_cast<const char *>(data), length);
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total_length += length;
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}
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private:
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WriteBuffer & ostr;
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int64_t total_length = 0;
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PARQUET_DISALLOW_COPY_AND_ASSIGN(OstreamOutputStream);
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};
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void ParquetBlockOutputStream::write(const Block & block)
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{
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block.checkNumberOfRows();
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const size_t columns_num = block.columns();
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/// For arrow::Schema and arrow::Table creation
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std::vector<std::shared_ptr<arrow::Field>> arrow_fields;
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std::vector<std::shared_ptr<arrow::Array>> arrow_arrays;
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arrow_fields.reserve(columns_num);
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arrow_arrays.reserve(columns_num);
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for (size_t column_i = 0; column_i < columns_num; ++column_i)
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{
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// TODO: constructed every iteration
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const ColumnWithTypeAndName & column = block.safeGetByPosition(column_i);
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const bool is_column_nullable = column.type->isNullable();
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const auto & column_nested_type
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= is_column_nullable ? static_cast<const DataTypeNullable *>(column.type.get())->getNestedType() : column.type;
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const std::string column_nested_type_name = column_nested_type->getFamilyName();
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if (isDecimal(column_nested_type))
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{
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const auto add_decimal_field = [&](const auto & types) -> bool {
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using Types = std::decay_t<decltype(types)>;
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using ToDataType = typename Types::LeftType;
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if constexpr (
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std::is_same_v<
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ToDataType,
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DataTypeDecimal<
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Decimal32>> || std::is_same_v<ToDataType, DataTypeDecimal<Decimal64>> || std::is_same_v<ToDataType, DataTypeDecimal<Decimal128>>)
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{
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const auto & decimal_type = static_cast<const ToDataType *>(column_nested_type.get());
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arrow_fields.emplace_back(std::make_shared<arrow::Field>(
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column.name, arrow::decimal(decimal_type->getPrecision(), decimal_type->getScale()), is_column_nullable));
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}
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return false;
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};
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callOnIndexAndDataType<void>(column_nested_type->getTypeId(), add_decimal_field);
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}
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else
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{
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if (internal_type_to_arrow_type.find(column_nested_type_name) == internal_type_to_arrow_type.end())
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{
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throw Exception{"The type \"" + column_nested_type_name + "\" of a column \"" + column.name
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+ "\""
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" is not supported for conversion into a Parquet data format",
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ErrorCodes::UNKNOWN_TYPE};
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}
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arrow_fields.emplace_back(std::make_shared<arrow::Field>(column.name, internal_type_to_arrow_type.at(column_nested_type_name), is_column_nullable));
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}
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std::shared_ptr<arrow::Array> arrow_array;
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ColumnPtr nested_column
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= is_column_nullable ? static_cast<const ColumnNullable &>(*column.column).getNestedColumnPtr() : column.column;
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const PaddedPODArray<UInt8> * null_bytemap = is_column_nullable ? extractNullBytemapPtr(column.column) : nullptr;
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if ("String" == column_nested_type_name)
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{
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fillArrowArrayWithStringColumnData<ColumnString>(nested_column, arrow_array, null_bytemap);
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}
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else if ("FixedString" == column_nested_type_name)
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{
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fillArrowArrayWithStringColumnData<ColumnFixedString>(nested_column, arrow_array, null_bytemap);
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}
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else if ("Date" == column_nested_type_name)
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{
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fillArrowArrayWithDateColumnData(nested_column, arrow_array, null_bytemap);
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}
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else if ("DateTime" == column_nested_type_name)
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{
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fillArrowArrayWithDateTimeColumnData(nested_column, arrow_array, null_bytemap);
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}
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else if (isDecimal(column_nested_type))
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{
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auto fill_decimal = [&](const auto & types) -> bool
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{
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using Types = std::decay_t<decltype(types)>;
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using ToDataType = typename Types::LeftType;
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if constexpr (
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std::is_same_v<
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ToDataType,
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DataTypeDecimal<
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Decimal32>> || std::is_same_v<ToDataType, DataTypeDecimal<Decimal64>> || std::is_same_v<ToDataType, DataTypeDecimal<Decimal128>>)
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{
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const auto & decimal_type = static_cast<const ToDataType *>(column_nested_type.get());
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fillArrowArrayWithDecimalColumnData(nested_column, arrow_array, null_bytemap, decimal_type);
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}
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return false;
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};
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callOnIndexAndDataType<void>(column_nested_type->getTypeId(), fill_decimal);
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}
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# define DISPATCH(CPP_NUMERIC_TYPE, ARROW_BUILDER_TYPE) \
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else if (#CPP_NUMERIC_TYPE == column_nested_type_name) \
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{ \
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fillArrowArrayWithNumericColumnData<CPP_NUMERIC_TYPE, ARROW_BUILDER_TYPE>(nested_column, arrow_array, null_bytemap); \
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}
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FOR_INTERNAL_NUMERIC_TYPES(DISPATCH)
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# undef DISPATCH
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else
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{
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throw Exception{"Internal type \"" + column_nested_type_name + "\" of a column \"" + column.name
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+ "\""
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" is not supported for conversion into a Parquet data format",
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ErrorCodes::UNKNOWN_TYPE};
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}
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arrow_arrays.emplace_back(std::move(arrow_array));
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}
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std::shared_ptr<arrow::Schema> arrow_schema = std::make_shared<arrow::Schema>(std::move(arrow_fields));
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std::shared_ptr<arrow::Table> arrow_table = arrow::Table::Make(arrow_schema, arrow_arrays);
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auto sink = std::make_shared<OstreamOutputStream>(ostr);
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if (!file_writer)
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{
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parquet::WriterProperties::Builder builder;
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#if USE_SNAPPY
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builder.compression(parquet::Compression::SNAPPY);
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#endif
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auto props = builder.build();
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auto status = parquet::arrow::FileWriter::Open(
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*arrow_table->schema(),
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arrow::default_memory_pool(),
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sink,
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props, /*parquet::default_writer_properties(),*/
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parquet::arrow::default_arrow_writer_properties(),
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&file_writer);
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if (!status.ok())
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throw Exception{"Error while opening a table: " + status.ToString(), ErrorCodes::UNKNOWN_EXCEPTION};
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}
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// TODO: calculate row_group_size depending on a number of rows and table size
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auto status = file_writer->WriteTable(*arrow_table, format_settings.parquet.row_group_size);
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if (!status.ok())
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throw Exception{"Error while writing a table: " + status.ToString(), ErrorCodes::UNKNOWN_EXCEPTION};
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}
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void ParquetBlockOutputStream::writeSuffix()
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{
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||||
if (file_writer)
|
||||
{
|
||||
auto status = file_writer->Close();
|
||||
if (!status.ok())
|
||||
throw Exception{"Error while closing a table: " + status.ToString(), ErrorCodes::UNKNOWN_EXCEPTION};
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void registerOutputFormatParquet(FormatFactory & factory)
|
||||
{
|
||||
factory.registerOutputFormat(
|
||||
"Parquet", [](WriteBuffer & buf, const Block & sample, const Context & /*context*/, const FormatSettings & format_settings)
|
||||
{
|
||||
BlockOutputStreamPtr impl = std::make_shared<ParquetBlockOutputStream>(buf, sample, format_settings);
|
||||
auto res = std::make_shared<SquashingBlockOutputStream>(impl, impl->getHeader(), format_settings.parquet.row_group_size, 0);
|
||||
res->disableFlush();
|
||||
return res;
|
||||
});
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
|
||||
#else
|
||||
|
||||
namespace DB
|
||||
{
|
||||
class FormatFactory;
|
||||
void registerOutputFormatParquet(FormatFactory &)
|
||||
{
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
#endif
|
||||
@ -1,46 +0,0 @@
|
||||
#pragma once
|
||||
|
||||
#include "config_formats.h"
|
||||
#if USE_PARQUET
|
||||
# include <DataStreams/IBlockOutputStream.h>
|
||||
# include <Formats/FormatSettings.h>
|
||||
|
||||
namespace arrow
|
||||
{
|
||||
class Array;
|
||||
class DataType;
|
||||
}
|
||||
|
||||
namespace parquet
|
||||
{
|
||||
namespace arrow
|
||||
{
|
||||
class FileWriter;
|
||||
}
|
||||
}
|
||||
|
||||
namespace DB
|
||||
{
|
||||
class ParquetBlockOutputStream : public IBlockOutputStream
|
||||
{
|
||||
public:
|
||||
ParquetBlockOutputStream(WriteBuffer & ostr_, const Block & header_, const FormatSettings & format_settings);
|
||||
|
||||
Block getHeader() const override { return header; }
|
||||
void write(const Block & block) override;
|
||||
void writeSuffix() override;
|
||||
void flush() override;
|
||||
|
||||
String getContentType() const override { return "application/octet-stream"; }
|
||||
|
||||
private:
|
||||
WriteBuffer & ostr;
|
||||
Block header;
|
||||
const FormatSettings format_settings;
|
||||
|
||||
std::unique_ptr<parquet::arrow::FileWriter> file_writer;
|
||||
};
|
||||
|
||||
}
|
||||
|
||||
#endif
|
||||
@ -1,7 +1,7 @@
|
||||
#include "config_formats.h"
|
||||
|
||||
#if USE_PARQUET
|
||||
# include "ParquetBlockOutputFormat.h"
|
||||
# include <Processors/Formats/Impl/ParquetBlockOutputFormat.h>
|
||||
|
||||
// TODO: clean includes
|
||||
# include <Columns/ColumnDecimal.h>
|
||||
|
||||
@ -1,6 +1,6 @@
|
||||
#pragma once
|
||||
|
||||
#include <Common/config.h>
|
||||
#include "config_formats.h"
|
||||
#if USE_PARQUET
|
||||
# include <Processors/Formats/IOutputFormat.h>
|
||||
# include <Formats/FormatSettings.h>
|
||||
|
||||
Loading…
Reference in New Issue
Block a user