From d69cae23e6131269fe80d27f01efac3c8ed950db Mon Sep 17 00:00:00 2001
From: Suyog Rao <suyog.rao@gmail.com>
Date: Mon, 16 Nov 2015 19:57:12 -0800
Subject: [PATCH] Add option for JVM to dump its heap on OutOfMemory

Fixes #4192

Fixes #4205
---
 bin/logstash.lib.sh | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/bin/logstash.lib.sh b/bin/logstash.lib.sh
index a5d6ccee3..b1e86e065 100755
--- a/bin/logstash.lib.sh
+++ b/bin/logstash.lib.sh
@@ -35,6 +35,11 @@ setup_java() {
 
     JAVA_OPTS="$JAVA_OPTS -XX:CMSInitiatingOccupancyFraction=75"
     JAVA_OPTS="$JAVA_OPTS -XX:+UseCMSInitiatingOccupancyOnly"
+    # Causes the JVM to dump its heap on OutOfMemory.
+    JAVA_OPTS="$JAVA_OPTS -XX:+HeapDumpOnOutOfMemoryError"
+    # The path to the heap dump location, note directory must exists and have enough
+    # space for a full heap dump.
+    JAVA_OPTS="$JAVA_OPTS -XX:HeapDumpPath=${LOGSTASH_HOME}/heapdump.hprof"
   fi
 
   if [ "$LS_JAVA_OPTS" ] ; then