Test: Only run the test that verifies the pending field in the _shards header if the test cluster has two are more data nodes.

rest-api-spec/test/index/11_shard_header.yaml

@@ -3,33 +3,24 @@
 
  - do:
       indices.create:
-        index: foobar1
+        index: foobar
         body:
           settings:
             number_of_shards: "1"
             number_of_replicas: "0"
 
-
- - do:
-      indices.create:
-        index: foobar2
-        body:
-          settings:
-            number_of_shards: "1"
-            number_of_replicas: "1"
-
  - do:
       cluster.health:
           wait_for_status: green
 
  - do:
       index:
-          index:  foobar1
+          index:  foobar
           type:   baz
           id:     1
           body:   { foo: bar }
 
- - match:   { _index:   foobar1 }
+ - match:   { _index:   foobar }
  - match:   { _type:    baz }
  - match:   { _id:      "1"}
  - match:   { _version: 1}
@@ -37,20 +28,3 @@
  - match:   { _shards.successful: 1}
  - match:   { _shards.failed: 0}
  - is_false:   _shards.pending
-
- - do:
-      index:
-          index:  foobar2
-          type:   baz
-          id:     1
-          replication:  async
-          body:   { foo: bar }
-
- - match:   { _index:   foobar2 }
- - match:   { _type:    baz }
- - match:   { _id:      "1"}
- - match:   { _version: 1}
- - match:   { _shards.total: 2}
- - match:   { _shards.successful: 1}
- - match:   { _shards.failed: 0}
- - match:   { _shards.pending: 1}

rest-api-spec/test/index/12_shard_header_pending.yaml

@@ -0,0 +1,34 @@
+---
+"Index check shard header pending field":
+
+ - skip:
+      features:    "requires_replica"
+
+ - do:
+      indices.create:
+        index: foobar
+        body:
+          settings:
+            number_of_shards: "1"
+            number_of_replicas: "1"
+
+ - do:
+      cluster.health:
+          wait_for_status: green
+
+ - do:
+      index:
+          index:  foobar
+          type:   baz
+          id:     1
+          replication:  async
+          body:   { foo: bar }
+
+ - match:   { _index:   foobar }
+ - match:   { _type:    baz }
+ - match:   { _id:      "1"}
+ - match:   { _version: 1}
+ - match:   { _shards.total: 2}
+ - match:   { _shards.successful: 1}
+ - match:   { _shards.failed: 0}
+ - match:   { _shards.pending: 1}

src/test/java/org/elasticsearch/test/rest/support/Features.java

@@ -48,6 +48,9 @@ public final class Features {
             if ("benchmark".equals(feature) && ElasticsearchIntegrationTest.cluster().numBenchNodes() > 0) {
                 continue;
             }
+            if ("requires_replica".equals(feature) && ElasticsearchIntegrationTest.cluster().numDataNodes() >= 2) {
+                continue;
+            }
             if (!SUPPORTED.contains(feature)) {
                 return false;
             }