HappenLee commented on code in PR #35628:
URL: https://github.com/apache/doris/pull/35628#discussion_r1625927972
##########
be/src/olap/rowset/segment_v2/column_reader.cpp:
##########
@@ -72,13 +74,135 @@
#include "vec/common/schema_util.h"
#include "vec/common/string_ref.h"
#include "vec/core/types.h"
+#include "vec/data_types/data_type_agg_state.h"
+#include "vec/data_types/data_type_factory.hpp"
#include "vec/runtime/vdatetime_value.h" //for VecDateTime
namespace doris {
namespace segment_v2 {
static bvar::Adder<size_t>
g_column_reader_memory_bytes("doris_column_reader_memory_bytes");
static bvar::Adder<size_t> g_column_reader_num("doris_column_reader_num");
+Status ColumnReader::create_array(const ColumnReaderOptions& opts, const
ColumnMetaPB& meta,
+ uint64_t num_rows, const io::FileReaderSPtr&
file_reader,
+ std::unique_ptr<ColumnReader>* reader) {
+ DCHECK(meta.children_columns_size() == 2 || meta.children_columns_size()
== 3);
+
+ std::unique_ptr<ColumnReader> item_reader;
+ RETURN_IF_ERROR(ColumnReader::create(opts, meta.children_columns(0),
+ meta.children_columns(0).num_rows(),
file_reader,
+ &item_reader));
+
+ std::unique_ptr<ColumnReader> offset_reader;
+ RETURN_IF_ERROR(ColumnReader::create(opts, meta.children_columns(1),
+ meta.children_columns(1).num_rows(),
file_reader,
+ &offset_reader));
+
+ std::unique_ptr<ColumnReader> null_reader;
+ if (meta.is_nullable()) {
+ RETURN_IF_ERROR(ColumnReader::create(opts, meta.children_columns(2),
+
meta.children_columns(2).num_rows(), file_reader,
+ &null_reader));
+ }
+
+ // The num rows of the array reader equals to the num rows of the length
reader.
+ num_rows = meta.children_columns(1).num_rows();
Review Comment:
the `num_rows` is param, but set value in the function ?
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