From 4315f610b7f01ee830b622b75b1f5fa2b098ecee Mon Sep 17 00:00:00 2001
From: Yi WU <dataroaring@gmail.com>
Date: Wed, 20 Jul 2022 22:30:35 +0800
Subject: [PATCH] check vm.max_map_count before starting

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 74e1b49c14d85d..17c6542d197265 100755
--- a/bin/start_be.sh
+++ b/bin/start_be.sh
@@ -53,6 +53,12 @@ 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