From b22d32d124dbc7c7e995af57a53901443dd774b4 Mon Sep 17 00:00:00 2001
From: Maxim Pimenov <m@maps.me>
Date: Wed, 4 Mar 2020 17:54:15 +0300
Subject: [PATCH] [local_ads] Truncate the old file when writing metadata.

---
 local_ads/statistics.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/local_ads/statistics.cpp b/local_ads/statistics.cpp
index 891957ff39..84c5c4eedb 100644
--- a/local_ads/statistics.cpp
+++ b/local_ads/statistics.cpp
@@ -314,7 +314,11 @@ std::list<Event> Statistics::WriteEvents(std::list<Event> & events, std::string
       }
 
       if (writer == nullptr || writer->GetName() != metadata.m_fileName)
-        writer = std::make_unique<FileWriter>(metadata.m_fileName, FileWriter::OP_APPEND);
+      {
+        writer = std::make_unique<FileWriter>(
+            metadata.m_fileName,
+            needWriteMetadata ? FileWriter::OP_WRITE_TRUNCATE : FileWriter::OP_APPEND);
+      }
 
       if (needWriteMetadata)
         WriteMetadata(*writer, event.m_countryId, event.m_mwmVersion, metadata.m_timestamp);