diff --git a/solr/solrj/src/java/org/apache/solr/client/solrj/SolrRequest.java b/solr/solrj/src/java/org/apache/solr/client/solrj/SolrRequest.java
index b5c3e16dcbc..bccf2edbfb2 100644
--- a/solr/solrj/src/java/org/apache/solr/client/solrj/SolrRequest.java
+++ b/solr/solrj/src/java/org/apache/solr/client/solrj/SolrRequest.java
@@ -16,9 +16,6 @@
  */
 package org.apache.solr.client.solrj;
 
-import org.apache.solr.common.params.SolrParams;
-import org.apache.solr.common.util.ContentStream;
-
 import java.io.IOException;
 import java.io.Serializable;
 import java.util.Arrays;
@@ -27,6 +24,10 @@ import java.util.HashSet;
 import java.util.Set;
 import java.util.concurrent.TimeUnit;
 
+import org.apache.solr.client.solrj.request.RequestWriter;
+import org.apache.solr.common.params.SolrParams;
+import org.apache.solr.common.util.ContentStream;
+
 import static java.util.Collections.unmodifiableSet;
 
 /**
@@ -155,6 +156,10 @@ public abstract class SolrRequest<T extends SolrResponse> implements Serializabl
 
   public abstract Collection<ContentStream> getContentStreams() throws IOException;
 
+  public RequestWriter.ContentWriter getContentWriter(String expectedType) {
+    return null;
+  }
+
   /**
    * Create a new SolrResponse to hold the response from the server
    * @param client the {@link SolrClient} the request will be sent to
diff --git a/solr/solrj/src/java/org/apache/solr/client/solrj/impl/BinaryRequestWriter.java b/solr/solrj/src/java/org/apache/solr/client/solrj/impl/BinaryRequestWriter.java
index 4687fe36304..398571da204 100644
--- a/solr/solrj/src/java/org/apache/solr/client/solrj/impl/BinaryRequestWriter.java
+++ b/solr/solrj/src/java/org/apache/solr/client/solrj/impl/BinaryRequestWriter.java
@@ -53,7 +53,7 @@ public class BinaryRequestWriter extends RequestWriter {
         }
       };
     } else {
-      return null;
+      return req.getContentWriter("application/javabin");
     }
   }
 
diff --git a/solr/solrj/src/java/org/apache/solr/client/solrj/request/RequestWriter.java b/solr/solrj/src/java/org/apache/solr/client/solrj/request/RequestWriter.java
index ef7f14d30b7..5521e29acb3 100644
--- a/solr/solrj/src/java/org/apache/solr/client/solrj/request/RequestWriter.java
+++ b/solr/solrj/src/java/org/apache/solr/client/solrj/request/RequestWriter.java
@@ -70,7 +70,7 @@ public class RequestWriter {
         }
       };
     }
-    return null;
+    return req.getContentWriter(ClientUtils.TEXT_XML);
   }
 
   public Collection<ContentStream> getContentStreams(SolrRequest req) throws IOException {
diff --git a/solr/solrj/src/java/org/apache/solr/client/solrj/request/V2Request.java b/solr/solrj/src/java/org/apache/solr/client/solrj/request/V2Request.java
index c6a553826f6..8985c9c554a 100644
--- a/solr/solrj/src/java/org/apache/solr/client/solrj/request/V2Request.java
+++ b/solr/solrj/src/java/org/apache/solr/client/solrj/request/V2Request.java
@@ -17,12 +17,10 @@
 
 package org.apache.solr.client.solrj.request;
 
-import java.io.ByteArrayInputStream;
 import java.io.IOException;
-import java.io.InputStream;
+import java.io.OutputStream;
 import java.nio.charset.StandardCharsets;
 import java.util.Collection;
-import java.util.Collections;
 import java.util.concurrent.atomic.AtomicLong;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
@@ -33,7 +31,7 @@ import org.apache.solr.client.solrj.response.V2Response;
 import org.apache.solr.common.MapWriter;
 import org.apache.solr.common.params.SolrParams;
 import org.apache.solr.common.util.ContentStream;
-import org.apache.solr.common.util.ContentStreamBase;
+import org.apache.solr.common.util.JavaBinCodec;
 import org.apache.solr.common.util.Utils;
 
 public class V2Request extends SolrRequest<V2Response> implements MapWriter {
@@ -63,23 +61,34 @@ public class V2Request extends SolrRequest<V2Response> implements MapWriter {
   }
 
   @Override
-  public Collection<ContentStream> getContentStreams() throws IOException {
+  public RequestWriter.ContentWriter getContentWriter(String s) {
     if (v2Calls.get() != null) v2Calls.get().incrementAndGet();
-    if (payload != null) {
-      return Collections.singleton(new ContentStreamBase() {
-        @Override
-        public InputStream getStream() throws IOException {
-          if(payload instanceof InputStream) return (InputStream) payload;
-          if (useBinary) return Utils.toJavabin(payload);
-          else return new ByteArrayInputStream(Utils.toJSON(payload));
+    if (payload == null) return null;
+    return new RequestWriter.ContentWriter() {
+      @Override
+      public void write(OutputStream os) throws IOException {
+        if (payload instanceof String) {
+          os.write(((String) payload).getBytes(StandardCharsets.UTF_8));
+        } else {
+          if (useBinary) {
+            new JavaBinCodec().marshal(payload, os);
+          } else {
+            byte[] b = Utils.toJSON(payload);
+            os.write(b);
+          }
         }
+      }
 
-        @Override
-        public String getContentType() {
-          return useBinary ? "application/javabin" : "application/json";
-        }
-      });
-    }
+      @Override
+      public String getContentType() {
+        if (payload instanceof String) return "application/json";
+        return useBinary ? "application/javabin" : "application/json";
+      }
+    };
+  }
+
+  @Override
+  public Collection<ContentStream> getContentStreams() throws IOException {
     return null;
   }
 
@@ -135,7 +144,7 @@ public class V2Request extends SolrRequest<V2Response> implements MapWriter {
      */
     public Builder withPayload(String payload) {
       if (payload != null) {
-        this.payload = new ByteArrayInputStream(payload.getBytes(StandardCharsets.UTF_8));
+        this.payload = payload;
       }
       return this;
     }
diff --git a/solr/solrj/src/java/org/apache/solr/common/util/CommandOperation.java b/solr/solrj/src/java/org/apache/solr/common/util/CommandOperation.java
index 561fb869232..277324affda 100644
--- a/solr/solrj/src/java/org/apache/solr/common/util/CommandOperation.java
+++ b/solr/solrj/src/java/org/apache/solr/common/util/CommandOperation.java
@@ -343,6 +343,7 @@ public class CommandOperation {
     }
     ArrayList<CommandOperation> ops = new ArrayList<>();
     for (ContentStream stream : streams) {
+
       if ("application/javabin".equals(stream.getContentType())) {
         ops.addAll(parse(stream.getStream(), singletonCommands));
       } else {