tillrohrmann commented on a change in pull request #16812:
URL: https://github.com/apache/flink/pull/16812#discussion_r688498132



##########
File path: 
flink-tests/src/test/java/org/apache/flink/test/misc/SuccessAfterNetworkBuffersFailureITCase.java
##########
@@ -50,22 +50,22 @@
  */
 public class SuccessAfterNetworkBuffersFailureITCase extends TestLogger {
 
-    private static final int PARALLELISM = 16;
+    private static final int PARALLELISM = 4;
 
     @ClassRule
     public static final MiniClusterWithClientResource MINI_CLUSTER_RESOURCE =
             new MiniClusterWithClientResource(
                     new MiniClusterResourceConfiguration.Builder()
                             .setConfiguration(getConfiguration())
                             .setNumberTaskManagers(2)
-                            .setNumberSlotsPerTaskManager(8)
+                            .setNumberSlotsPerTaskManager(2)
                             .build());
 
     private static Configuration getConfiguration() {
         Configuration config = new Configuration();
-        config.set(TaskManagerOptions.MANAGED_MEMORY_SIZE, 
MemorySize.parse("80m"));
-        config.set(TaskManagerOptions.NETWORK_MEMORY_MIN, 
MemorySize.ofMebiBytes(32L));
-        config.set(TaskManagerOptions.NETWORK_MEMORY_MAX, 
MemorySize.ofMebiBytes(32L));
+        config.set(TaskManagerOptions.MANAGED_MEMORY_SIZE, 
MemorySize.parse("20m"));
+        config.set(TaskManagerOptions.NETWORK_MEMORY_MIN, 
MemorySize.ofMebiBytes(2L));

Review comment:
       Dividing by four would make the kmeans job pass. Hence, I needed to 
divide it by the 4^2.




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