From ea82760463b790591e45cfe085b7fedcac2b1546 Mon Sep 17 00:00:00 2001
From: ivan-kush <ivan.v.kush@yandex.ru>
Date: Thu, 2 May 2019 18:12:57 +0300
Subject: [PATCH] add reset

---
 dbms/src/Storages/StorageMergeTree.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/dbms/src/Storages/StorageMergeTree.cpp b/dbms/src/Storages/StorageMergeTree.cpp
index bb14725f781..522a9517996 100644
--- a/dbms/src/Storages/StorageMergeTree.cpp
+++ b/dbms/src/Storages/StorageMergeTree.cpp
@@ -290,7 +290,10 @@ void StorageMergeTree::alter(
     data.setTTLExpressions(new_columns.getColumnTTLs(), new_ttl_table_ast);
 
     for (auto & transaction : transactions)
+    {
         transaction->commit();
+        transaction.reset();
+    }
 
     /// Columns sizes could be changed
     data.recalculateColumnSizes();
@@ -856,7 +859,10 @@ void StorageMergeTree::clearColumnInPartition(const ASTPtr & partition, const Fi
         return;
 
     for (auto & transaction : transactions)
+    {
         transaction->commit();
+        transaction.reset();
+    }
 
     /// Recalculate columns size (not only for the modified column)
     data.recalculateColumnSizes();