From 86b12cabae5d641cacf651dc73152c3f0f97ccd9 Mon Sep 17 00:00:00 2001
From: Andrew Hutchings <andrew@linuxjedi.co.uk>
Date: Tue, 12 Dec 2017 21:11:52 +0000
Subject: [PATCH] MCOL-978 Disable QCache for ColumnStore

ColumnStore tables can have data modifications away from a specific
MariaDB server. This means it is possible for QCache to not be
invalidated properly in vtable mode 0. This patch makes sure it is
disabled for ColumnStore.
---
 dbcon/mysql/ha_calpont.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/dbcon/mysql/ha_calpont.h b/dbcon/mysql/ha_calpont.h
index 8bcf2edfd..ebd7d120a 100644
--- a/dbcon/mysql/ha_calpont.h
+++ b/dbcon/mysql/ha_calpont.h
@@ -239,6 +239,8 @@ public:
     THR_LOCK_DATA** store_lock(THD* thd, THR_LOCK_DATA** to,
                                enum thr_lock_type lock_type);     ///< required
     const COND* cond_push(const COND* cond);
+    uint8 table_cache_type() { return HA_CACHE_TBL_NOCACHE; }
+
 };
 #endif //HA_CALPONT_H__