Don't crash on file absence (#9112)

Author: resetius

ydb/library/yql/providers/dq/global_worker_manager/global_worker_manager.cpp

@@ -456,7 +456,7 @@ class TGlobalWorkerManager: public TWorkerManagerCommon<TGlobalWorkerManager> {
         return std::make_pair(true, "");
     }
 
-    std::pair<bool, TString> MaybeUpload(bool isForwarded, const TVector<TFileResource>& files, bool useCache = false) {
+    std::pair<bool, TString> MaybeUploadUnsafe(bool isForwarded, const TVector<TFileResource>& files, bool useCache = false) {
         if (isForwarded) {
             return std::make_pair(false, "");
         }
@@ -557,6 +557,15 @@ class TGlobalWorkerManager: public TWorkerManagerCommon<TGlobalWorkerManager> {
         return std::make_pair(flag, "");
     }
 
+    std::pair<bool, TString> MaybeUpload(bool isForwarded, const TVector<TFileResource>& files, bool useCache = false) {
+        try {
+            return MaybeUploadUnsafe(isForwarded, files, useCache);
+        } catch (...) {
+            return {false, CurrentExceptionMessage()};
+        }
+    }
+
+
     void StartUploadAndForward(TEvAllocateWorkersRequest::TPtr& ev, const TActorContext& ctx)
     {
         YQL_LOG_CTX_ROOT_SESSION_SCOPE(ev->Get()->Record.GetTraceId());