liutang123 commented on a change in pull request #3025: Restructure storage
type to support complex types expending
URL: https://github.com/apache/incubator-doris/pull/3025#discussion_r392648505
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File path: be/src/olap/rowset/segment_v2/page_decoder.h
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@@ -81,13 +81,20 @@ class PageDecoder {
// allocated in the column_vector_view's mem_pool.
virtual Status next_batch(size_t* n, ColumnBlockView* dst) = 0;
+ // Same as `next_batch` except for not adding index
+ virtual Status peek_next_batch(size_t *n, ColumnBlockView* dst) {
Review comment:
In ListColumnReader, we want read one next row and do not want to change the
cursor of page decoder.
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