diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/coprocessor/TestRowProcessorEndpoint.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/coprocessor/TestRowProcessorEndpoint.java
index d511734ddd9..12aaa45dbe7 100644
--- a/hbase-server/src/test/java/org/apache/hadoop/hbase/coprocessor/TestRowProcessorEndpoint.java
+++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/coprocessor/TestRowProcessorEndpoint.java
@@ -60,6 +60,7 @@ import org.apache.hadoop.hbase.coprocessor.protobuf.generated.IncrementCounterPr
 import org.apache.hadoop.hbase.coprocessor.protobuf.generated.IncrementCounterProcessorTestProtos.TimeoutProcessorRequest;
 import org.apache.hadoop.hbase.coprocessor.protobuf.generated.IncrementCounterProcessorTestProtos.TimeoutProcessorResponse;
 import org.apache.hadoop.hbase.ipc.CoprocessorRpcChannel;
+import org.apache.hadoop.hbase.ipc.RpcScheduler;
 import org.apache.hadoop.hbase.protobuf.generated.RowProcessorProtos.ProcessRequest;
 import org.apache.hadoop.hbase.protobuf.generated.RowProcessorProtos.ProcessResponse;
 import org.apache.hadoop.hbase.protobuf.generated.RowProcessorProtos.RowProcessorService;
@@ -119,6 +120,7 @@ public class TestRowProcessorEndpoint {
         RowProcessorEndpoint.class.getName());
     conf.setInt(HConstants.HBASE_CLIENT_RETRIES_NUMBER, 2);
     conf.setLong("hbase.hregion.row.processor.timeout", 1000L);
+    conf.setLong(RpcScheduler.IPC_SERVER_MAX_CALLQUEUE_LENGTH, 2048);
     util.startMiniCluster();
   }