zhannngchen commented on code in PR #12605:
URL: https://github.com/apache/doris/pull/12605#discussion_r971729865
##########
be/src/olap/memtable_flush_executor.cpp:
##########
@@ -132,10 +132,12 @@ void MemTableFlushExecutor::init(const
std::vector<DataDir*>& data_dirs) {
}
// NOTE: we use SERIAL mode here to ensure all mem-tables from one tablet are
flushed in order.
+// unique key merge on write should flush serial cause calc delete bitmap
should load segment serial
Review Comment:
This comment should move to `be/src/olap/delta_writer.cpp:L143`
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