postgres
diff --git a/‎src/test/regress/expected/incremental_sort.out
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diff --git a/‎src/test/regress/sql/incremental_sort.sql
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@@ -1402,6 +1402,7 @@ set min_parallel_table_scan_size = '1kB';
 set min_parallel_index_scan_size = '1kB';
 set parallel_setup_cost = 0;
 set parallel_tuple_cost = 0;
+set max_parallel_workers_per_gather = 2;
 create table t (a int, b int, c int);
 insert into t select mod(i,10),mod(i,10),i from generate_series(1,10000) s(i);
 create index on t (a);
 
@@ -198,6 +198,7 @@ set min_parallel_table_scan_size = '1kB';
 set min_parallel_index_scan_size = '1kB';
 set parallel_setup_cost = 0;
 set parallel_tuple_cost = 0;
+set max_parallel_workers_per_gather = 2;
 
 create table t (a int, b int, c int);
 insert into t select mod(i,10),mod(i,10),i from generate_series(1,10000) s(i);