IGNITE-26249 Reduce direct memory consumption in ItNodeTest (#7430)

Author: sashapolo

modules/raft/build.gradle

@@ -119,3 +119,9 @@ dependencies {
     integrationTestImplementation libs.dropwizard.metrics
     integrationTestImplementation libs.disruptor
 }
+
+tasks.named('integrationTest').configure {
+    // Default allocator in Netty 4.2.+ consumes too much direct memory, which breaks some tests in this module, so we use the default
+    // value from older versions.
+    jvmArgs += '-Dio.netty.allocator.type=pooled'
+}

modules/raft/src/integrationTest/java/org/apache/ignite/raft/jraft/core/ItNodeTest.java

@@ -178,7 +178,7 @@
 import org.junit.jupiter.api.extension.ExtendWith;
 
 /**
- * Integration tests for raft cluster. TODO asch get rid of sleeps wherether possible IGNITE-14832
+ * Integration tests for raft cluster. TODO asch get rid of sleeps wherever possible IGNITE-14832
  */
 @ExtendWith(WorkDirectoryExtension.class)
 public class ItNodeTest extends BaseIgniteAbstractTest {
@@ -4152,7 +4152,6 @@ private Future<?> startChangePeersAndLearnersThread(ChangeArg arg) {
         });
     }
 
-    @Disabled("https://issues.apache.org/jira/browse/IGNITE-26249")
     @Test
     public void testChangePeersAndLearnersChaosWithSnapshot() throws Exception {
         // start cluster
@@ -4199,7 +4198,6 @@ public void testChangePeersAndLearnersChaosWithSnapshot() throws Exception {
     }
 
     @Test
-    @Disabled("https://issues.apache.org/jira/browse/IGNITE-26249")
     public void testChangePeersAndLearnersChaosWithoutSnapshot() throws Exception {
         // start cluster
         List<TestPeer> peers = new ArrayList<>();
@@ -4247,7 +4245,6 @@ public void testChangePeersAndLearnersChaosWithoutSnapshot() throws Exception {
     }
 
     @Test
-    @Disabled("https://issues.apache.org/jira/browse/IGNITE-26249")
     public void testChangePeersAndLearnersChaosApplyTasks() throws Exception {
         // start cluster
         List<TestPeer> peers = new ArrayList<>();