clickhouse: added minor diagnostic output [#6201].

60bf0939 · Michael Kolupaev · 93143369 · 60bf0939
隐藏空白更改
内联并排

Showing with 2 addition and 0 deletion

dbms/src/Storages/StorageMergeTree.cpp dbms/src/Storages/StorageMergeTree.cpp +2 -0

未找到文件。
--- a/dbms/src/Storages/StorageMergeTree.cpp
+++ b/dbms/src/Storages/StorageMergeTree.cpp
@@ -851,6 +851,8 @@ BlockInputStreams StorageMergeTree::read(
 			total_count *= index_granularity;
 			
 			size = std::min(1., static_cast<double>(requested_count) / total_count);
+			
+			LOG_DEBUG(log, "Relative sample size: " << size);
 		}
 		
 		UInt64 sampling_column_max = 0;