OpenSearch/core/bin/elasticsearch.in.sh

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#!/bin/sh
CORE_CLASSPATH="$ES_HOME/lib/${project.build.finalName}.jar:$ES_HOME/lib/*"
if [ "x$ES_CLASSPATH" = "x" ]; then
ES_CLASSPATH="$CORE_CLASSPATH"
else
ES_CLASSPATH="$ES_CLASSPATH:$CORE_CLASSPATH"
fi
if [ "x$ES_MIN_MEM" = "x" ]; then
ES_MIN_MEM=${packaging.elasticsearch.heap.min}
fi
if [ "x$ES_MAX_MEM" = "x" ]; then
ES_MAX_MEM=${packaging.elasticsearch.heap.max}
fi
if [ "x$ES_HEAP_SIZE" != "x" ]; then
ES_MIN_MEM=$ES_HEAP_SIZE
ES_MAX_MEM=$ES_HEAP_SIZE
fi
# min and max heap sizes should be set to the same value to avoid
# stop-the-world GC pauses during resize, and so that we can lock the
# heap in memory on startup to prevent any of it from being swapped
# out.
JAVA_OPTS="$JAVA_OPTS -Xms${ES_MIN_MEM}"
JAVA_OPTS="$JAVA_OPTS -Xmx${ES_MAX_MEM}"
# new generation
if [ "x$ES_HEAP_NEWSIZE" != "x" ]; then
JAVA_OPTS="$JAVA_OPTS -Xmn${ES_HEAP_NEWSIZE}"
fi
# max direct memory
if [ "x$ES_DIRECT_SIZE" != "x" ]; then
JAVA_OPTS="$JAVA_OPTS -XX:MaxDirectMemorySize=${ES_DIRECT_SIZE}"
fi
# set to headless, just in case
JAVA_OPTS="$JAVA_OPTS -Djava.awt.headless=true"
# Force the JVM to use IPv4 stack
if [ "x$ES_USE_IPV4" != "x" ]; then
JAVA_OPTS="$JAVA_OPTS -Djava.net.preferIPv4Stack=true"
fi
JAVA_OPTS="$JAVA_OPTS -XX:+UseParNewGC"
JAVA_OPTS="$JAVA_OPTS -XX:+UseConcMarkSweepGC"
JAVA_OPTS="$JAVA_OPTS -XX:CMSInitiatingOccupancyFraction=75"
JAVA_OPTS="$JAVA_OPTS -XX:+UseCMSInitiatingOccupancyOnly"
# GC logging options
if [ -n "$ES_GC_LOG_FILE" ]; then
JAVA_OPTS="$JAVA_OPTS -XX:+PrintGCDetails"
JAVA_OPTS="$JAVA_OPTS -XX:+PrintGCTimeStamps"
JAVA_OPTS="$JAVA_OPTS -XX:+PrintClassHistogram"
JAVA_OPTS="$JAVA_OPTS -XX:+PrintTenuringDistribution"
JAVA_OPTS="$JAVA_OPTS -XX:+PrintGCApplicationStoppedTime"
JAVA_OPTS="$JAVA_OPTS \"-Xloggc:$ES_GC_LOG_FILE\""
# Ensure that the directory for the log file exists: the JVM will not create it.
mkdir -p "`dirname \"$ES_GC_LOG_FILE\"`"
fi
# 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=$ES_HOME/logs/heapdump.hprof"
# Disables explicit GC
JAVA_OPTS="$JAVA_OPTS -XX:+DisableExplicitGC"
# Ensure UTF-8 encoding by default (e.g. filenames)
JAVA_OPTS="$JAVA_OPTS -Dfile.encoding=UTF-8"
# Use our provided JNA always versus the system one
JAVA_OPTS="$JAVA_OPTS -Djna.nosys=true"