From 9533ff12ddd5d2fab161381d27ed3c964f4f1c9d Mon Sep 17 00:00:00 2001
From: alexey-milovidov <milovidov@yandex-team.ru>
Date: Sun, 22 Sep 2019 05:12:55 +0300
Subject: [PATCH] Merge pull request #7032 from
 azat-archive/distributed-directory-monitor-SIGSEGV

Avoid SIGSEGV on batch send failure (file with index XX is absent)

(cherry picked from commit 5970aafd9aa5f1c885365297dfdb3d10fec8fdb8)
---
 dbms/src/Storages/Distributed/DirectoryMonitor.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/dbms/src/Storages/Distributed/DirectoryMonitor.cpp b/dbms/src/Storages/Distributed/DirectoryMonitor.cpp
index 13c9cf3050a..6d5bffe3491 100644
--- a/dbms/src/Storages/Distributed/DirectoryMonitor.cpp
+++ b/dbms/src/Storages/Distributed/DirectoryMonitor.cpp
@@ -390,7 +390,8 @@ struct StorageDistributedDirectoryMonitor::Batch
                 remote->writePrepared(in);
             }
 
-            remote->writeSuffix();
+            if (remote)
+                remote->writeSuffix();
         }
         catch (const Exception & e)
         {