yiguolei commented on code in PR #49040:
URL: https://github.com/apache/doris/pull/49040#discussion_r2196696139
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be/src/olap/rowset/segment_v2/segment.cpp:
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@@ -206,7 +264,11 @@ Status Segment::_open() {
}
_meta_mem_usage += sizeof(*this);
- _meta_mem_usage += _tablet_schema->num_columns() *
config::estimated_mem_per_column_reader;
+ _meta_mem_usage +=
+ config::enable_segment_partial_column_cache
+ ? config::max_segment_partial_column_cache_size *
Review Comment:
用户可以把max_segment_partial_column_cache_size 这个设置为0，相当于永远不cache， 设置为100000
表示cache 所有的column readers
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