diff --git a/src/main/java/org/elasticsearch/action/admin/indices/refresh/TransportRefreshAction.java b/src/main/java/org/elasticsearch/action/admin/indices/refresh/TransportRefreshAction.java
index 452b0aa02a1..6c7b0d37f06 100644
--- a/src/main/java/org/elasticsearch/action/admin/indices/refresh/TransportRefreshAction.java
+++ b/src/main/java/org/elasticsearch/action/admin/indices/refresh/TransportRefreshAction.java
@@ -122,6 +122,7 @@ public class TransportRefreshAction extends TransportBroadcastOperationAction<Re
      */
     @Override
     protected GroupShardsIterator shards(ClusterState clusterState, RefreshRequest request, String[] concreteIndices) {
+        logger.trace("resolving shards to refresh based on cluster state version [{}]", clusterState.version());
         return clusterState.routingTable().allAssignedShardsGrouped(concreteIndices, true);
     }
 
diff --git a/src/test/java/org/elasticsearch/search/aggregations/bucket/MinDocCountTests.java b/src/test/java/org/elasticsearch/search/aggregations/bucket/MinDocCountTests.java
index f861b20df9d..fc82be8fbd8 100644
--- a/src/test/java/org/elasticsearch/search/aggregations/bucket/MinDocCountTests.java
+++ b/src/test/java/org/elasticsearch/search/aggregations/bucket/MinDocCountTests.java
@@ -33,6 +33,7 @@ import org.elasticsearch.search.aggregations.bucket.histogram.Histogram;
 import org.elasticsearch.search.aggregations.bucket.terms.Terms;
 import org.elasticsearch.search.aggregations.bucket.terms.TermsBuilder;
 import org.elasticsearch.test.ElasticsearchIntegrationTest;
+import org.elasticsearch.test.junit.annotations.TestLogging;
 import org.joda.time.DateTime;
 import org.joda.time.format.DateTimeFormat;
 
@@ -46,6 +47,7 @@ import static org.elasticsearch.test.hamcrest.ElasticsearchAssertions.assertAllS
 
 
 @ElasticsearchIntegrationTest.SuiteScopeTest
+@TestLogging("action.admin.indices.refresh:TRACE,action.search.type:TRACE,cluster.service:TRACE")
 public class MinDocCountTests extends ElasticsearchIntegrationTest {
 
     private static final QueryBuilder QUERY = QueryBuilders.termQuery("match", true);
diff --git a/src/test/java/org/elasticsearch/search/basic/SearchWithRandomExceptionsTests.java b/src/test/java/org/elasticsearch/search/basic/SearchWithRandomExceptionsTests.java
index c2489a6ba10..fc883d9c037 100644
--- a/src/test/java/org/elasticsearch/search/basic/SearchWithRandomExceptionsTests.java
+++ b/src/test/java/org/elasticsearch/search/basic/SearchWithRandomExceptionsTests.java
@@ -38,6 +38,7 @@ import org.elasticsearch.test.ElasticsearchIntegrationTest;
 import org.elasticsearch.test.ImmutableTestCluster;
 import org.elasticsearch.test.engine.MockInternalEngine;
 import org.elasticsearch.test.engine.ThrowingAtomicReaderWrapper;
+import org.elasticsearch.test.junit.annotations.TestLogging;
 import org.elasticsearch.test.store.MockDirectoryHelper;
 import org.elasticsearch.test.store.MockFSDirectoryService;
 import org.hamcrest.Matchers;
@@ -187,6 +188,7 @@ public class SearchWithRandomExceptionsTests extends ElasticsearchIntegrationTes
     }
 
     @Test
+    @TestLogging("action.admin.indices.refresh:TRACE,action.search.type:TRACE,cluster.service:TRACE")
     public void testRandomExceptions() throws IOException, InterruptedException, ExecutionException {
         String mapping = XContentFactory.jsonBuilder().
                 startObject().