kangpinghuang opened a new issue #2643: estimate_segment_size brings injury to performance URL: https://github.com/apache/incubator-doris/issues/2643 **Describe the bug** perf shows that in load process the estimate_segment_size is called many times and is time-cost, about 30% cpu is spent there. And what is more, this also leads to slow compaction. One base compaction with one segment with 200M data run for 900s. Logs show that most of time is also spent at call estimate_segment_size.
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