From 08ebef2992a5afeef7587392d44093045e31ea6a Mon Sep 17 00:00:00 2001
From: Yongqiang YANG <98214048+dataroaring@users.noreply.github.com>
Date: Thu, 21 Jul 2022 21:16:48 +0800
Subject: [PATCH] [Enhancement] check vm.max_map_count before starting (#11052)

When vectorized engine is enabled, doris uses much more vmas than before,
and it leads to core dump due to memory allocation failure.
---
 bin/start_be.sh | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/bin/start_be.sh b/bin/start_be.sh
index 551a12e5c0..4944230252 100755
--- a/bin/start_be.sh
+++ b/bin/start_be.sh
@@ -58,6 +58,12 @@ export DORIS_HOME=$(
     pwd
 )
 
+MAX_MAP_COUNT=`sysctl -n vm.max_map_count`
+if [ $MAX_MAP_COUNT -lt 2000000 ]; then
+    echo "Please set vm.max_map_count to be 2000000. sysctl -w vm.max_map_count=2000000"
+    exit 1
+fi
+
 # add libs to CLASSPATH
 for f in $DORIS_HOME/lib/*.jar; do
   if [ ! -n "${DORIS_JNI_CLASSPATH_PARAMETER}" ]; then