csun5285 commented on code in PR #65419:
URL: https://github.com/apache/doris/pull/65419#discussion_r3552142896
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be/src/storage/segment/column_reader_cache.cpp:
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@@ -117,6 +157,11 @@ Status ColumnReaderCache::get_column_reader(int32_t
col_uid,
}
RETURN_IF_ERROR(st_meta);
+ // Segments written before #26572 do not persist decimal precision/frac in
+ // ColumnMetaPB, so recover the logical p/s from TabletSchema before
+ // ColumnReader builds DataTypeDecimal.
+ fill_missing_decimal_precision_from_schema(&meta, _tablet_schema);
Review Comment:
在Segment::_parse_footer 的时候把里面的ColumnMetaPB 改了就行。
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