don't reserve too much

src/Interpreters/HashJoin/AddedColumns.h

@@ -169,7 +169,7 @@ public:
             return;
 
         /// Do not allow big allocations when user set max_joined_block_rows to huge value
-        size_t reserve_size = std::min<size_t>(max_joined_block_rows, DEFAULT_BLOCK_SIZE * 2); /// rows_to_add
+        size_t reserve_size = std::min<size_t>(max_joined_block_rows, rows_to_add * 2);
 
         if (need_replicate)
             /// Reserve 10% more space for columns, because some rows can be repeated

tests/performance/hashjoin_with_large_output.xml

@@ -9,6 +9,7 @@
             <name>settings</name>
             <values>
                 <value>join_algorithm='hash'</value>
+                <value>join_algorithm='parallel_hash'</value>
                 <value>join_algorithm='grace_hash'</value>
             </values>
         </substitution>

tests/performance/scripts/perf.py

@@ -478,6 +478,8 @@ for query_index in queries_to_run:
 
     client_seconds = time.perf_counter() - start_seconds
     print(f"client-time\t{query_index}\t{client_seconds}\t{server_seconds}")
+    median = [statistics.median(t) for t in all_server_times]
+    print(f"median\t{query_index}\t{median[0]}")
 
     # Run additional profiling queries to collect profile data, but only if test times appeared to be different.
     # We have to do it after normal runs because otherwise it will affect test statistics too much
@@ -491,7 +493,6 @@ for query_index in queries_to_run:
     pvalue = stats.ttest_ind(
         all_server_times[0], all_server_times[1], equal_var=False
     ).pvalue
-    median = [statistics.median(t) for t in all_server_times]
     # Keep this consistent with the value used in report. Should eventually move
     # to (median[1] - median[0]) / min(median), which is compatible with "times"
     # difference we use in report (max(median) / min(median)).