diff -r 9175ea22f1b1 -r 8a5bb4b48b85 server/src/app/Console/Commands/IndexDocuments.php
--- a/server/src/app/Console/Commands/IndexDocuments.php	Thu Feb 09 17:22:58 2017 +0100
+++ b/server/src/app/Console/Commands/IndexDocuments.php	Fri Feb 10 12:03:12 2017 +0100
@@ -250,17 +250,33 @@
             return $res;
         }, []);
 
-        $labelsBnf = $this->bnfResolver->getLabels(
-            array_unique(array_reduce(
-                $sres,
-                function($r, $so) {
-                    if($so['type'] === Utils::SUBJECT_TYPE_BNF) {
-                        array_push($r, $so['uri']);
-                    }
-                    return $r;
-                },[]
-            ))
-        );
+        $labelsResolved = false;
+        $timeoutRetries = 0;
+        while(!$labelsResolved && $timeoutRetries < config('corpusparole.bnf_max_retries', 3)) {
+            try {
+                $labelsBnf = $this->bnfResolver->getLabels(
+                    array_unique(array_reduce(
+                        $sres,
+                        function($r, $so) {
+                            if($so['type'] === Utils::SUBJECT_TYPE_BNF) {
+                                array_push($r, $so['uri']);
+                            }
+                            return $r;
+                        },[]
+                    ))
+                );
+                $labelsResolved = true;
+            } catch(BnfResolverTimeoutException $e) {
+                Log::warning('IndexDocument: Resolve label timeout, will retry');
+                $timeoutRetries++;
+                continue;
+            }
+        }
+        if(!$labelsResolved) {
+            Log::error("IndexDocument: Some bnf labels not resolved (retry timeout: $timeoutRetries).");
+            $this->error("\nError resolving bnf labels (retry timeout: $timeoutRetries). Stopping");
+            throw new \Exception("Error resolving bnf labels (retry timeout: $timeoutRetries). Stopping");
+        }
         $labelsLexvo = $this->lexvoResolver->getNames(
             array_unique(array_reduce(
                 $sres,
@@ -586,9 +602,11 @@
      *
      * @return int (1 if sucess, 0 if error)
      */
-     private function indexBulk($docBodies)
-     {
-          $query_data = ['body' => []];
+     private function indexBulk($docBodies) {
+        if(empty($docBodies)) {
+            return;
+        }
+        $query_data = ['body' => []];
           foreach($docBodies as $docId => $docBody){
               $query_data['body'][] = [
                   'index' => [
@@ -665,6 +683,9 @@
                 $progressBar->setMessage($docId);
                 $progressBar->advance();
                 $doc = $this->documentRepository->get($docId);
+                if(is_null($doc)) {
+                    continue;
+                }
                 $docBody = $this->getDocBody($doc);
                 if($noBulk) {
                     $this->indexOne($docId, $docBody);