kaka11chen commented on code in PR #44635:
URL: https://github.com/apache/doris/pull/44635#discussion_r1918912277
##########
be/src/pipeline/exec/file_scan_operator.cpp:
##########
@@ -37,9 +38,11 @@ Status
FileScanLocalState::_init_scanners(std::list<vectorized::VScannerSPtr>* s
}
auto& p = _parent->cast<FileScanOperatorX>();
- uint32_t shard_num = std::min(
- config::doris_scanner_thread_pool_thread_num /
state()->query_parallel_instance_num(),
- _max_scanners);
+ // There's only one scan range for each backend in batch split mode. Each
backend only starts up one ScanNode instance.
+ uint32_t shard_num =
+ std::min(config::doris_scanner_thread_pool_thread_num /
+ (_batch_split_mode ? 1 :
state()->query_parallel_instance_num()),
Review Comment:
Done.
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