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Fix very strange behavior of Apache ORC
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c8c728e740
commit
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@ -55,7 +55,7 @@ ORCBlockOutputFormat::ORCBlockOutputFormat(WriteBuffer & out_, const Block & hea
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data_types.push_back(recursiveRemoveLowCardinality(type));
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}
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ORC_UNIQUE_PTR<orc::Type> ORCBlockOutputFormat::getORCType(const DataTypePtr & type)
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std::unique_ptr<orc::Type> ORCBlockOutputFormat::getORCType(const DataTypePtr & type)
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{
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switch (type->getTypeId())
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{
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@ -398,17 +398,21 @@ void ORCBlockOutputFormat::writeColumn(
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const auto & list_column = assert_cast<const ColumnArray &>(column);
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auto nested_type = assert_cast<const DataTypeArray &>(*type).getNestedType();
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const ColumnArray::Offsets & offsets = list_column.getOffsets();
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list_orc_column.resize(list_column.size());
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size_t column_size = list_column.size();
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list_orc_column.resize(column_size);
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/// The length of list i in ListVectorBatch is offsets[i+1] - offsets[i].
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list_orc_column.offsets[0] = 0;
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for (size_t i = 0; i != list_column.size(); ++i)
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for (size_t i = 0; i != column_size; ++i)
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{
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list_orc_column.offsets[i + 1] = offsets[i];
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list_orc_column.notNull[i] = 1;
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}
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orc::ColumnVectorBatch & nested_orc_column = *list_orc_column.elements;
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writeColumn(nested_orc_column, list_column.getData(), nested_type, null_bytemap);
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list_orc_column.numElements = list_column.size();
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list_orc_column.numElements = column_size;
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break;
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}
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case TypeIndex::Tuple:
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@ -429,10 +433,12 @@ void ORCBlockOutputFormat::writeColumn(
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const auto & map_type = assert_cast<const DataTypeMap &>(*type);
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const ColumnArray::Offsets & offsets = list_column.getOffsets();
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size_t column_size = list_column.size();
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map_orc_column.resize(list_column.size());
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/// The length of list i in ListVectorBatch is offsets[i+1] - offsets[i].
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map_orc_column.offsets[0] = 0;
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for (size_t i = 0; i != list_column.size(); ++i)
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for (size_t i = 0; i != column_size; ++i)
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{
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map_orc_column.offsets[i + 1] = offsets[i];
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map_orc_column.notNull[i] = 1;
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@ -447,7 +453,7 @@ void ORCBlockOutputFormat::writeColumn(
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auto value_type = map_type.getValueType();
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writeColumn(values_orc_column, *nested_columns[1], value_type, null_bytemap);
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map_orc_column.numElements = list_column.size();
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map_orc_column.numElements = column_size;
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break;
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}
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default:
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@ -461,8 +467,9 @@ size_t ORCBlockOutputFormat::getColumnSize(const IColumn & column, DataTypePtr &
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{
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auto nested_type = assert_cast<const DataTypeArray &>(*type).getNestedType();
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const IColumn & nested_column = assert_cast<const ColumnArray &>(column).getData();
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return getColumnSize(nested_column, nested_type);
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return std::max(column.size(), getColumnSize(nested_column, nested_type));
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}
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return column.size();
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}
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@ -471,9 +478,7 @@ size_t ORCBlockOutputFormat::getMaxColumnSize(Chunk & chunk)
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size_t columns_num = chunk.getNumColumns();
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size_t max_column_size = 0;
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for (size_t i = 0; i != columns_num; ++i)
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{
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max_column_size = std::max(max_column_size, getColumnSize(*chunk.getColumns()[i], data_types[i]));
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}
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return max_column_size;
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}
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@ -484,8 +489,9 @@ void ORCBlockOutputFormat::consume(Chunk chunk)
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size_t columns_num = chunk.getNumColumns();
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size_t rows_num = chunk.getNumRows();
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/// getMaxColumnSize is needed to write arrays.
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/// The size of the batch must be no less than total amount of array elements.
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ORC_UNIQUE_PTR<orc::ColumnVectorBatch> batch = writer->createRowBatch(getMaxColumnSize(chunk));
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/// The size of the batch must be no less than total amount of array elements
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/// and no less than the number of rows (ORC writes a null bit for every row).
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std::unique_ptr<orc::ColumnVectorBatch> batch = writer->createRowBatch(getMaxColumnSize(chunk));
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orc::StructVectorBatch & root = dynamic_cast<orc::StructVectorBatch &>(*batch);
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auto columns = chunk.detachColumns();
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for (auto & column : columns)
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@ -493,6 +499,7 @@ void ORCBlockOutputFormat::consume(Chunk chunk)
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for (size_t i = 0; i != columns_num; ++i)
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writeColumn(*root.fields[i], *columns[i], data_types[i], nullptr);
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root.numElements = rows_num;
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writer->add(*batch);
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}
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@ -42,7 +42,7 @@ private:
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void consume(Chunk chunk) override;
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void finalizeImpl() override;
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ORC_UNIQUE_PTR<orc::Type> getORCType(const DataTypePtr & type);
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std::unique_ptr<orc::Type> getORCType(const DataTypePtr & type);
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/// ConvertFunc is needed for type UInt8, because firstly UInt8 (char8_t) must be
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/// converted to unsigned char (bugprone-signed-char-misuse in clang).
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@ -75,8 +75,8 @@ private:
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const FormatSettings format_settings;
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ORCOutputStream output_stream;
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DataTypes data_types;
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ORC_UNIQUE_PTR<orc::Writer> writer;
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ORC_UNIQUE_PTR<orc::Type> schema;
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std::unique_ptr<orc::Writer> writer;
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std::unique_ptr<orc::Type> schema;
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orc::WriterOptions options;
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};
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BIN
tests/queries/0_stateless/02426_orc_bug.reference
Normal file
BIN
tests/queries/0_stateless/02426_orc_bug.reference
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Binary file not shown.
1
tests/queries/0_stateless/02426_orc_bug.sql
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1
tests/queries/0_stateless/02426_orc_bug.sql
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@ -0,0 +1 @@
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SELECT arrayJoin([[], [1]]) FORMAT ORC;
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