diff --git a/pom.xml b/pom.xml
index 1ef33e18b12c1..6225fc0521a62 100644
--- a/pom.xml
+++ b/pom.xml
@@ -2657,7 +2657,7 @@
             <jvmArgs>
               <jvmArg>-Xss128m</jvmArg>
               <jvmArg>-Xms4g</jvmArg>
-              <jvmArg>-Xmx6g</jvmArg>
+              <jvmArg>-Xmx5g</jvmArg>
               <jvmArg>-XX:MaxMetaspaceSize=2g</jvmArg>
               <jvmArg>-XX:ReservedCodeCacheSize=${CodeCacheSize}</jvmArg>
             </jvmArgs>
@@ -2707,7 +2707,7 @@
               <include>**/*Suite.java</include>
             </includes>
             <reportsDirectory>${project.build.directory}/surefire-reports</reportsDirectory>
-            <argLine>-ea -Xmx6g -Xss4m -XX:MaxMetaspaceSize=2g -XX:ReservedCodeCacheSize=${CodeCacheSize} -Dio.netty.tryReflectionSetAccessible=true</argLine>
+            <argLine>-ea -Xmx5g -Xss4m -XX:MaxMetaspaceSize=2g -XX:ReservedCodeCacheSize=${CodeCacheSize} -Dio.netty.tryReflectionSetAccessible=true</argLine>
             <environmentVariables>
               <!--
                 Setting SPARK_DIST_CLASSPATH is a simple way to make sure any child processes
@@ -2758,7 +2758,7 @@
             <reportsDirectory>${project.build.directory}/surefire-reports</reportsDirectory>
             <junitxml>.</junitxml>
             <filereports>SparkTestSuite.txt</filereports>
-            <argLine>-ea -Xmx6g -Xss4m -XX:MaxMetaspaceSize=2g -XX:ReservedCodeCacheSize=${CodeCacheSize} -Dio.netty.tryReflectionSetAccessible=true</argLine>
+            <argLine>-ea -Xmx5g -Xss4m -XX:MaxMetaspaceSize=2g -XX:ReservedCodeCacheSize=${CodeCacheSize} -Dio.netty.tryReflectionSetAccessible=true</argLine>
             <stderr/>
             <environmentVariables>
               <!--
diff --git a/project/SparkBuild.scala b/project/SparkBuild.scala
index 54d7181f9412b..746a52142c8cc 100644
--- a/project/SparkBuild.scala
+++ b/project/SparkBuild.scala
@@ -1127,12 +1127,12 @@ object TestSettings {
     // SPARK-29282 This is for consistency between JDK8 and JDK11.
     (Test / javaOptions) ++= {
       val metaspaceSize = sys.env.get("METASPACE_SIZE").getOrElse("1300m")
-      s"-Xmx6g -Xss4m -XX:MaxMetaspaceSize=$metaspaceSize -XX:+UseParallelGC -XX:-UseDynamicNumberOfGCThreads -XX:ReservedCodeCacheSize=128m"
+      s"-Xmx5g -Xss4m -XX:MaxMetaspaceSize=$metaspaceSize -XX:+UseParallelGC -XX:-UseDynamicNumberOfGCThreads -XX:ReservedCodeCacheSize=128m"
         .split(" ").toSeq
     },
     javaOptions ++= {
       val metaspaceSize = sys.env.get("METASPACE_SIZE").getOrElse("1300m")
-      s"-Xmx6g -XX:MaxMetaspaceSize=$metaspaceSize".split(" ").toSeq
+      s"-Xmx5g -XX:MaxMetaspaceSize=$metaspaceSize".split(" ").toSeq
     },
     (Test / javaOptions) ++= {
       val jdwpEnabled = sys.props.getOrElse("test.jdwp.enabled", "false").toBoolean
diff --git a/resource-managers/kubernetes/integration-tests/pom.xml b/resource-managers/kubernetes/integration-tests/pom.xml
index 20e6e01f13b23..665eafb5aa12a 100644
--- a/resource-managers/kubernetes/integration-tests/pom.xml
+++ b/resource-managers/kubernetes/integration-tests/pom.xml
@@ -138,7 +138,7 @@
           <reportsDirectory>${project.build.directory}/surefire-reports</reportsDirectory>
           <junitxml>.</junitxml>
           <filereports>SparkTestSuite.txt</filereports>
-          <argLine>-ea -Xmx6g -XX:ReservedCodeCacheSize=1g ${extraScalaTestArgs}</argLine>
+          <argLine>-ea -Xmx5g -XX:ReservedCodeCacheSize=1g ${extraScalaTestArgs}</argLine>
           <stderr/>
           <systemProperties>
             <log4j.configuration>file:src/test/resources/log4j.properties</log4j.configuration>
diff --git a/sql/catalyst/pom.xml b/sql/catalyst/pom.xml
index e457d5a016bbd..ddafef40e69f0 100644
--- a/sql/catalyst/pom.xml
+++ b/sql/catalyst/pom.xml
@@ -158,7 +158,7 @@
         <groupId>org.scalatest</groupId>
         <artifactId>scalatest-maven-plugin</artifactId>
         <configuration>
-          <argLine>-ea -Xmx6g -Xss4m -XX:ReservedCodeCacheSize=${CodeCacheSize} -Dio.netty.tryReflectionSetAccessible=true</argLine>
+          <argLine>-ea -Xmx5g -Xss4m -XX:ReservedCodeCacheSize=${CodeCacheSize} -Dio.netty.tryReflectionSetAccessible=true</argLine>
         </configuration>
       </plugin>
       <plugin>
diff --git a/sql/core/pom.xml b/sql/core/pom.xml
index 44a5539dc3e54..df3fd323b82b0 100644
--- a/sql/core/pom.xml
+++ b/sql/core/pom.xml
@@ -233,7 +233,7 @@
         <groupId>org.scalatest</groupId>
         <artifactId>scalatest-maven-plugin</artifactId>
         <configuration>
-          <argLine>-ea -Xmx6g -Xss4m -XX:ReservedCodeCacheSize=${CodeCacheSize} -Dio.netty.tryReflectionSetAccessible=true</argLine>
+          <argLine>-ea -Xmx5g -Xss4m -XX:ReservedCodeCacheSize=${CodeCacheSize} -Dio.netty.tryReflectionSetAccessible=true</argLine>
         </configuration>
       </plugin>
       <plugin>
diff --git a/sql/hive/pom.xml b/sql/hive/pom.xml
index 4146753e9a896..b43005ac35430 100644
--- a/sql/hive/pom.xml
+++ b/sql/hive/pom.xml
@@ -234,7 +234,7 @@
         <artifactId>scalatest-maven-plugin</artifactId>
         <configuration>
           <!-- Specially disable assertions since some Hive tests fail them -->
-          <argLine>-da -Xmx6g -XX:ReservedCodeCacheSize=${CodeCacheSize} -Dio.netty.tryReflectionSetAccessible=true</argLine>
+          <argLine>-da -Xmx5g -XX:ReservedCodeCacheSize=${CodeCacheSize} -Dio.netty.tryReflectionSetAccessible=true</argLine>
         </configuration>
       </plugin>
       <plugin>