diff --git a/tests/_helm/values/e2e/distributed b/tests/_helm/values/e2e/distributed
index 9b9a0b706ac64..a906781c71859 100644
--- a/tests/_helm/values/e2e/distributed
+++ b/tests/_helm/values/e2e/distributed
@@ -97,6 +97,9 @@ extraConfigFiles:
     indexCoord:
       scheduler:
         interval: 100
+    indexNode:
+      scheduler:
+        buildParallel: 4
 metrics:
   serviceMonitor:
     enabled: true
diff --git a/tests/_helm/values/e2e/distributed-streaming-service b/tests/_helm/values/e2e/distributed-streaming-service
index 32b2655c02bd7..2175becb185b3 100644
--- a/tests/_helm/values/e2e/distributed-streaming-service
+++ b/tests/_helm/values/e2e/distributed-streaming-service
@@ -99,6 +99,9 @@ extraConfigFiles:
     indexCoord:
       scheduler:
         interval: 100
+    indexNode:
+      scheduler:
+        buildParallel: 4
 metrics:
   serviceMonitor:
     enabled: true
diff --git a/tests/_helm/values/e2e/standalone b/tests/_helm/values/e2e/standalone
index bef5796fd9cf3..9aaee6bca537f 100644
--- a/tests/_helm/values/e2e/standalone
+++ b/tests/_helm/values/e2e/standalone
@@ -97,6 +97,9 @@ extraConfigFiles:
     indexCoord:
       scheduler:
         interval: 100
+    indexNode:
+      scheduler:
+        buildParallel: 4
 metrics:
   serviceMonitor:
     enabled: true
diff --git a/tests/_helm/values/e2e/standalone-kafka-mmap b/tests/_helm/values/e2e/standalone-kafka-mmap
index b28e424cd03f4..d15c71896f2c8 100644
--- a/tests/_helm/values/e2e/standalone-kafka-mmap
+++ b/tests/_helm/values/e2e/standalone-kafka-mmap
@@ -105,6 +105,9 @@ extraConfigFiles:
     indexCoord:
       scheduler:
         interval: 100
+    indexNode:
+      scheduler:
+        buildParallel: 4
 metrics:
   serviceMonitor:
     enabled: true
diff --git a/tests/_helm/values/e2e/standalone-one-pod b/tests/_helm/values/e2e/standalone-one-pod
index e7505ac2e5341..15e21e4cca1b3 100644
--- a/tests/_helm/values/e2e/standalone-one-pod
+++ b/tests/_helm/values/e2e/standalone-one-pod
@@ -37,6 +37,9 @@ extraConfigFiles:
     indexCoord:
       scheduler:
         interval: 100
+    indexNode:
+      scheduler:
+        buildParallel: 4
 indexNode:
   disk:
     enabled: true