diff --git a/arangod/Replication/ReplicationFetcher.cpp b/arangod/Replication/ReplicationFetcher.cpp
index e0094a3e71..ca9e20dc26 100644
--- a/arangod/Replication/ReplicationFetcher.cpp
+++ b/arangod/Replication/ReplicationFetcher.cpp
@@ -182,6 +182,49 @@ int ReplicationFetcher::run () {
 /// @{
 ////////////////////////////////////////////////////////////////////////////////
 
+int ReplicationFetcher::applyCollectionDump (TRI_voc_cid_t cid,
+                                             SimpleHttpResult* response,
+                                             string& errorMsg) {
+  
+  std::stringstream& data = response->getBody();
+
+  while (true) {
+    string line;
+    
+    std::getline(data, line, '\n');
+
+    if (line.size() < 2) {
+      return TRI_ERROR_NO_ERROR;
+    }
+
+    TRI_json_t* json = TRI_JsonString(TRI_CORE_MEM_ZONE, line.c_str());
+
+    if (! JsonHelper::isArray(json)) {
+      if (json != 0) {
+        TRI_FreeJson(TRI_CORE_MEM_ZONE, json);
+      }
+
+      errorMsg = "received invalid JSON data for collection " + StringUtils::itoa(cid);
+      
+      return TRI_ERROR_REPLICATION_INVALID_RESPONSE;
+    }
+ 
+    TRI_json_t* type = JsonHelper::getArrayElement(json, "type");
+
+    if (! JsonHelper::isString(type)) {
+      TRI_FreeJson(TRI_CORE_MEM_ZONE, json);
+      
+      errorMsg = "received invalid JSON data for collection " + StringUtils::itoa(cid);
+
+      return TRI_ERROR_REPLICATION_INVALID_RESPONSE;
+    }
+    
+//    std::cout << "type: " << type->_value._string.data << "\n";
+
+    TRI_FreeJson(TRI_CORE_MEM_ZONE, json);
+  }
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 /// @brief get local replication apply state
 ////////////////////////////////////////////////////////////////////////////////
@@ -333,17 +376,25 @@ int ReplicationFetcher::getMasterInventory (string& errorMsg) {
 int ReplicationFetcher::handleCollectionDump (TRI_voc_cid_t cid,
                                               TRI_voc_tick_t maxTick,
                                               string& errorMsg) {
+  static const uint64_t chunkSize = 1024 * 1024; 
+
   if (_client == 0) {
     return TRI_ERROR_INTERNAL;
   }
 
-  const string baseUrl = "/_api/replication/dump?collection=" + StringUtils::itoa(cid);
+
+  const string baseUrl = "/_api/replication/dump"  
+                         "?collection=" + StringUtils::itoa(cid) + 
+                         "&chunkSize=" + StringUtils::itoa(chunkSize);
+
   map<string, string> headers;
 
   TRI_voc_tick_t fromTick = 0;
 
   while (true) {
-    string url = baseUrl + "&from=" + StringUtils::itoa(fromTick) + "&to=" + StringUtils::itoa(maxTick);
+    string url = baseUrl + 
+                 "&from=" + StringUtils::itoa(fromTick) + 
+                 "&to=" + StringUtils::itoa(maxTick);
 
     // send request
     SimpleHttpResult* response = _client->request(HttpRequest::HTTP_REQUEST_GET, 
@@ -405,13 +456,15 @@ int ReplicationFetcher::handleCollectionDump (TRI_voc_cid_t cid,
       }
     }
 
-std::cout << "GOT: " << response->getBody().str().c_str() << "\n\n\n";
+    int res = applyCollectionDump(cid, response, errorMsg);
 
     delete response;
 
-    if (! hasMore || fromTick == 0) {
+    if (res != TRI_ERROR_NO_ERROR ||
+        ! hasMore || 
+        fromTick == 0) {
       // done
-      return TRI_ERROR_NO_ERROR;
+      return res;
     }
   }
   
@@ -508,6 +561,8 @@ int ReplicationFetcher::handleCollectionInitial (TRI_json_t const* json,
   }
   else if (phase == PHASE_DATA) {
     int res;
+  
+    LOGGER_INFO("syncing data for collection '" << masterName->_value._string.data << "', id " << id);
 
     res = handleCollectionDump(id, _masterInfo._state._lastTick, errorMsg);
 
diff --git a/arangod/Replication/ReplicationFetcher.h b/arangod/Replication/ReplicationFetcher.h
index dc10a678f4..9b2f70e768 100644
--- a/arangod/Replication/ReplicationFetcher.h
+++ b/arangod/Replication/ReplicationFetcher.h
@@ -46,6 +46,7 @@ namespace triagens {
   namespace httpclient {
     class GeneralClientConnection;
     class SimpleHttpClient;
+    class SimpleHttpResult;
   }
   
   namespace rest {
@@ -145,6 +146,16 @@ namespace triagens {
 /// @{
 ////////////////////////////////////////////////////////////////////////////////
 
+      private:
+
+////////////////////////////////////////////////////////////////////////////////
+/// @brief apply the data from a collection dump
+////////////////////////////////////////////////////////////////////////////////
+
+        int applyCollectionDump (TRI_voc_cid_t,
+                                 httpclient::SimpleHttpResult*,
+                                 string&);
+
 ////////////////////////////////////////////////////////////////////////////////
 /// @brief get local replication apply state
 ////////////////////////////////////////////////////////////////////////////////
diff --git a/lib/ShapedJson/shaped-json.c b/lib/ShapedJson/shaped-json.c
index 9141c14076..88906214c7 100644
--- a/lib/ShapedJson/shaped-json.c
+++ b/lib/ShapedJson/shaped-json.c
@@ -1781,13 +1781,7 @@ static bool StringifyJsonShapeDataArray (TRI_shaper_t* shaper,
       return false;
     }
 
-    res = TRI_AppendCharStringBuffer(buffer, '"');
-
-    if (res != TRI_ERROR_NO_ERROR) {
-      return false;
-    }
-
-    res = TRI_AppendCharStringBuffer(buffer, ':');
+    res = TRI_AppendString2StringBuffer(buffer, "\":", 2);
 
     if (res != TRI_ERROR_NO_ERROR) {
       return false;
@@ -1866,13 +1860,7 @@ static bool StringifyJsonShapeDataArray (TRI_shaper_t* shaper,
       return false;
     }
 
-    res = TRI_AppendCharStringBuffer(buffer, '"');
-
-    if (res != TRI_ERROR_NO_ERROR) {
-      return false;
-    }
-
-    res = TRI_AppendCharStringBuffer(buffer, ':');
+    res = TRI_AppendString2StringBuffer(buffer, "\":", 2);
 
     if (res != TRI_ERROR_NO_ERROR) {
       return false;