.circleci/config-2_1.yml.mid_res.patch

diff --git .circleci/config-2_1.yml .circleci/config-2_1.yml
index ab621241a4..9c11f60d5d 100644
--- .circleci/config-2_1.yml
+++ .circleci/config-2_1.yml
@@ -19,32 +19,44 @@ default_env_vars: &default_env_vars
 j8_par_executor: &j8_par_executor
   executor:
     name: java8-executor
-    #exec_resource_class: xlarge
-  parallelism: 4
+    exec_resource_class: medium
+  parallelism: 25
 
 j8_small_par_executor: &j8_small_par_executor
   executor:
     name: java8-executor
-    #exec_resource_class: xlarge
-  parallelism: 1
+    exec_resource_class: large
+  parallelism: 10
 
 j8_medium_par_executor: &j8_medium_par_executor
   executor:
     name: java8-executor
-    #exec_resource_class: xlarge
-  parallelism: 1
+    exec_resource_class: large
+  parallelism: 10
+
+j8_large_par_executor: &j8_large_par_executor
+  executor:
+    name: java8-executor
+    exec_resource_class: large
+  parallelism: 50
+
+j8_very_large_par_executor: &j8_very_large_par_executor
+  executor:
+    name: java8-executor
+    exec_resource_class: xlarge
+  parallelism: 100
 
 j8_seq_executor: &j8_seq_executor
   executor:
     name: java8-executor
-    #exec_resource_class: xlarge
+    exec_resource_class: medium
   parallelism: 1 # sequential, single container tests: no parallelism benefits
 
 j11_par_executor: &j11_par_executor
   executor:
     name: java11-executor
-    #exec_resource_class: xlarge
-  parallelism: 4
+    exec_resource_class: medium
+  parallelism: 25
 
 j11_small_par_executor: &j11_small_par_executor
   executor:
@@ -52,6 +64,12 @@ j11_small_par_executor: &j11_small_par_executor
     #exec_resource_class: xlarge
   parallelism: 1
 
+j11_large_par_executor: &j11_large_par_executor
+  executor:
+    name: java11-executor
+    exec_resource_class: large
+  parallelism: 50
+
 j8_with_dtests_jobs: &j8_with_dtests_jobs
   jobs:
     - j8_build
@@ -425,7 +443,7 @@ jobs:
           target: fqltool-test
 
   j8_dtests-with-vnodes:
-    <<: *j8_par_executor
+    <<: *j8_large_par_executor
     steps:
       - attach_workspace:
           at: /home/cassandra
@@ -439,7 +457,7 @@ jobs:
           pytest_extra_args: '--use-vnodes --num-tokens=32 --skip-resource-intensive-tests'
 
   j11_dtests-with-vnodes:
-    <<: *j11_par_executor
+    <<: *j11_large_par_executor
     steps:
     - attach_workspace:
         at: /home/cassandra
@@ -454,7 +472,7 @@ jobs:
         pytest_extra_args: '--use-vnodes --num-tokens=32 --skip-resource-intensive-tests'
 
   j8_dtests-no-vnodes:
-    <<: *j8_par_executor
+    <<: *j8_large_par_executor
     steps:
       - attach_workspace:
           at: /home/cassandra
@@ -468,7 +486,7 @@ jobs:
           pytest_extra_args: '--skip-resource-intensive-tests'
 
   j11_dtests-no-vnodes:
-    <<: *j11_par_executor
+    <<: *j11_large_par_executor
     steps:
     - attach_workspace:
         at: /home/cassandra
@@ -483,7 +501,7 @@ jobs:
         pytest_extra_args: '--skip-resource-intensive-tests'
 
   j8_upgradetests-no-vnodes:
-    <<: *j8_par_executor
+    <<: *j8_very_large_par_executor
     steps:
       - attach_workspace:
           at: /home/cassandra
@@ -500,7 +518,7 @@ jobs:
           pytest_extra_args: '--execute-upgrade-tests'
 
   j8_cqlsh-dtests-py2-with-vnodes:
-    <<: *j8_par_executor
+    <<: *j8_large_par_executor
     steps:
       - attach_workspace:
           at: /home/cassandra
@@ -515,7 +533,7 @@ jobs:
           extra_env_args: 'CQLSH_PYTHON=/usr/bin/python2.7'
 
   j8_cqlsh-dtests-py3-with-vnodes:
-    <<: *j8_par_executor
+    <<: *j8_large_par_executor
     steps:
       - attach_workspace:
           at: /home/cassandra
@@ -530,7 +548,7 @@ jobs:
           extra_env_args: 'CQLSH_PYTHON=/usr/bin/python3.6'
 
   j8_cqlsh-dtests-py38-with-vnodes:
-    <<: *j8_par_executor
+    <<: *j8_large_par_executor
     steps:
       - attach_workspace:
           at: /home/cassandra
@@ -548,7 +566,7 @@ jobs:
           python_version: '3.8'
 
   j8_cqlsh-dtests-py2-no-vnodes:
-    <<: *j8_par_executor
+    <<: *j8_large_par_executor
     steps:
       - attach_workspace:
           at: /home/cassandra
@@ -563,7 +581,7 @@ jobs:
           extra_env_args: 'CQLSH_PYTHON=/usr/bin/python2.7'
 
   j8_cqlsh-dtests-py3-no-vnodes:
-    <<: *j8_par_executor
+    <<: *j8_large_par_executor
     steps:
       - attach_workspace:
           at: /home/cassandra
@@ -578,7 +596,7 @@ jobs:
           extra_env_args: 'CQLSH_PYTHON=/usr/bin/python3.6'
 
   j8_cqlsh-dtests-py38-no-vnodes:
-    <<: *j8_par_executor
+    <<: *j8_large_par_executor
     steps:
       - attach_workspace:
           at: /home/cassandra
@@ -596,7 +614,7 @@ jobs:
           python_version: '3.8'
 
   j11_cqlsh-dtests-py2-with-vnodes:
-    <<: *j11_par_executor
+    <<: *j11_large_par_executor
     steps:
       - attach_workspace:
           at: /home/cassandra
@@ -611,7 +629,7 @@ jobs:
           extra_env_args: 'CQLSH_PYTHON=/usr/bin/python2.7'
 
   j11_cqlsh-dtests-py3-with-vnodes:
-    <<: *j11_par_executor
+    <<: *j11_large_par_executor
     steps:
       - attach_workspace:
           at: /home/cassandra
@@ -626,7 +644,7 @@ jobs:
           extra_env_args: 'CQLSH_PYTHON=/usr/bin/python3.6'
 
   j11_cqlsh-dtests-py38-with-vnodes:
-    <<: *j11_par_executor
+    <<: *j11_large_par_executor
     steps:
       - attach_workspace:
           at: /home/cassandra
@@ -644,7 +662,7 @@ jobs:
           python_version: '3.8'
 
   j11_cqlsh-dtests-py2-no-vnodes:
-    <<: *j11_par_executor
+    <<: *j11_large_par_executor
     steps:
       - attach_workspace:
           at: /home/cassandra
@@ -659,7 +677,7 @@ jobs:
           extra_env_args: 'CQLSH_PYTHON=/usr/bin/python2.7'
 
   j11_cqlsh-dtests-py3-no-vnodes:
-    <<: *j11_par_executor
+    <<: *j11_large_par_executor
     steps:
       - attach_workspace:
           at: /home/cassandra
@@ -674,7 +692,7 @@ jobs:
           extra_env_args: 'CQLSH_PYTHON=/usr/bin/python3.6'
 
   j11_cqlsh-dtests-py38-no-vnodes:
-    <<: *j11_par_executor
+    <<: *j11_large_par_executor
     steps:
       - attach_workspace:
           at: /home/cassandra