zhangstar333 opened a new pull request, #39581:
URL: https://github.com/apache/doris/pull/39581
…ss memory
## Proposed changes
```
for (int i = 0; i < mutable_columns.size(); ++i) {
columns[i]->append_data_by_selector(mutable_columns[i], _selector);
}
```
the columns[I] size is 4096, and _selector size is 1;
so the (4096 - 1) rows is useless;
in a usercase, the block have 4096 rows and 34 columns.
so need bytes is:
1 block * 4096 rows * 4096 reserve * 16 bytes * 34 column * 48 instance =
438086664192 bytes;
it's will cause the query canceled as not have enough memory.
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