samza-shell/src/main/bash/run-framework-class.sh - samza - Git at Google

 #!/bin/bash
 # Licensed to the Apache Software Foundation (ASF) under one
 # or more contributor license agreements.  See the NOTICE file
 # distributed with this work for additional information
 # regarding copyright ownership.  The ASF licenses this file
 # to you under the Apache License, Version 2.0 (the
 # "License"); you may not use this file except in compliance
 # with the License.  You may obtain a copy of the License at
 #
 #   http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing,
 # software distributed under the License is distributed on an
 # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 # KIND, either express or implied.  See the License for the
 # specific language governing permissions and limitations
 # under the License.

 if [ $# -lt 1 ];
 then
   echo "USAGE: $0 classname [opts]"
   exit 1
 fi

 home_dir=`pwd`
 base_dir=$(dirname $0)/..
 cd $base_dir
 base_dir=`pwd`
 cd $home_dir

 echo home_dir=$home_dir
 echo "framework base (location of this script). base_dir=$base_dir"

 if [ ! -d "$base_dir/lib" ]; then
   echo "Unable to find $base_dir/lib, which is required to run."
   exit 1
 fi

 HADOOP_YARN_HOME="${HADOOP_YARN_HOME:-$HOME/.samza}"
 HADOOP_CONF_DIR="${HADOOP_CONF_DIR:-$HADOOP_YARN_HOME/conf}"
 GC_LOG_ROTATION_OPTS="-XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=10241024"
 LOG4J_FILE_NAME="log4j.xml"
 LOG4J2_FILE_NAME="log4j2.xml"
 BASE_LIB_DIR="$base_dir/lib"
 DEFAULT_LOG4J_FILE=$BASE_LIB_DIR/$LOG4J_FILE_NAME
 DEFAULT_LOG4J2_FILE=$BASE_LIB_DIR/$LOG4J2_FILE_NAME

 # For Managed Beam Workflow type jobs, user jar and log4j2.xml will be placed under __userPackage/lib.
 # If __userPackage/lib exists, set APPLICATION_LIB_DIR to __userPackage/lib
 # TODO - use parameter like job type (WORKFLOW_DSL) to decide whether there is a separate user lib path
 if [ -d "$home_dir/__userPackage/lib" ]; then
   APPLICATION_LIB_DIR="$home_dir/__userPackage/lib"
   echo APPLICATION_LIB_DIR=$APPLICATION_LIB_DIR
 fi

 # APPLICATION_LIB_DIR can be a directory which is different from $BASE_LIB_DIR which contains some additional
 # application-specific resources. If it is not set, then $BASE_LIB_DIR will be used as the value.
 APPLICATION_LIB_DIR="${APPLICATION_LIB_DIR:-$BASE_LIB_DIR}"
 export APPLICATION_LIB_DIR=$APPLICATION_LIB_DIR

 echo APPLICATION_LIB_DIR=$APPLICATION_LIB_DIR
 echo BASE_LIB_DIR=$BASE_LIB_DIR

 CLASSPATH=""

 # This is LinkedIn Hadoop cluster specific dependency! The jar file is needed
 # for the Samza job to run on LinkedIn's Hadoop YARN cluster.
 # There is no clean way to include this dependency anywhere else, so we just
 # manually include it here.
 # Long term fix: make Hadoop YARN cluster officially support Samza job and prepare
 # runtime dependency for us.
 #
 if [ -e /export/apps/hadoop/site/lib/grid-topology-1.0.jar ]; then
   CLASSPATH=$CLASSPATH" /export/apps/hadoop/site/lib/grid-topology-1.0.jar \n"
 fi

 # all the jars need to be appended on newlines to ensure line argument length of 72 bytes is not violated
 for file in $BASE_LIB_DIR/*.[jw]ar;
 do
   CLASSPATH=$CLASSPATH" $file \n"
 done
 echo generated from BASE_LIB_DIR CLASSPATH=$CLASSPATH

 # when APPLICATION_LIB_DIR is different from BASE_LIB_DIR, meaning it is a Managed Beam Workflow job, append
 # user jars in __userPackage/lib to the classpath
 # TODO - In the initial version of Managed Beam Workflow job, it's ensured that no extra jars are supplied from the
 # user job besides the user jar that only contains the pipeline proto file and non-jar resources. When simple UDF
 # support is to be added, we need to ensure no jar or class collision happens while combining user jars with framework jars
 # on classpath
 USER_CLASSPATH=""
 if [ "$APPLICATION_LIB_DIR" != "$BASE_LIB_DIR" ]; then
   for file in $APPLICATION_LIB_DIR/*.[jw]ar;
   do
     USER_CLASSPATH=$USER_CLASSPATH" $file \n"
   done
   echo generated from $APPLICATION_LIB_DIR USER_CLASSPATH=$USER_CLASSPATH
 fi

 # In some cases (AWS) $JAVA_HOME/bin doesn't contain jar.
 if [ -z "$JAVA_HOME" ] || [ ! -e "$JAVA_HOME/bin/jar" ]; then
   JAR="jar"
 else
   JAR="$JAVA_HOME/bin/jar"
 fi

 # Create a separate directory for writing files related to classpath management. It is easier to manage
 # permissions for the classpath-related files when they are in their own directory. An example of where
 # this is helpful is when using container images which might have predefined permissions for certain
 # directories.
 CLASSPATH_WORKSPACE_DIR=$base_dir/classpath_workspace
 mkdir -p $CLASSPATH_WORKSPACE_DIR
 # file containing the classpath string; used to avoid passing long classpaths directly to the jar command
 PATHING_MANIFEST_FILE=$CLASSPATH_WORKSPACE_DIR/manifest.txt
 # jar file to include on the classpath for running the main class
 PATHING_JAR_FILE=$CLASSPATH_WORKSPACE_DIR/pathing.jar

 # Newlines and spaces are intended to ensure proper parsing of manifest in pathing jar
 printf "Class-Path: \n $CLASSPATH \n" > $PATHING_MANIFEST_FILE
 # Creates a new archive and adds custom manifest information to pathing.jar
 eval "$JAR -cvmf $PATHING_MANIFEST_FILE $PATHING_JAR_FILE"

 if [ -z "$JAVA_HOME" ]; then
   JAVA="java"
 else
   JAVA="$JAVA_HOME/bin/java"
 fi

 if [ -z "$SAMZA_LOG_DIR" ]; then
   SAMZA_LOG_DIR="$base_dir"
 fi

 # add usercache directory
 mkdir -p $base_dir/tmp
 JAVA_TEMP_DIR=$base_dir/tmp

 # Check whether the JVM supports GC Log rotation, and enable it if so.
 function check_and_enable_gc_log_rotation {
   `$JAVA -Xloggc:/dev/null $GC_LOG_ROTATION_OPTS -version 2> /dev/null`
   if [ $? -eq 0 ] ; then
     JAVA_OPTS="$JAVA_OPTS $GC_LOG_ROTATION_OPTS"
   fi
 }

 # Try and use 64-bit mode if available in JVM_OPTS
 function check_and_enable_64_bit_mode {
   `$JAVA -d64 -version`
   if [ $? -eq 0 ] ; then
     JAVA_OPTS="$JAVA_OPTS -d64"
   fi
 }

 ### Inherit JVM_OPTS from task.opts configuration, and initialize defaults ###

 # Make the MDC inheritable to child threads by setting the system property to true if config not explicitly specified
 [[ $JAVA_OPTS != *-DisThreadContextMapInheritable* ]] && JAVA_OPTS="$JAVA_OPTS -DisThreadContextMapInheritable=true"

 # Check if log4j configuration is specified; if not, look for a configuration file:
 # 1) Check if using log4j or log4j2
 # 2) Check if configuration file system property is already set
 # 3) If not, then look in $APPLICATION_LIB_DIR for configuration file (remember that $APPLICATION_LIB_DIR can be same or
 #    different from $BASE_LIB_DIR).
 # 4) If still can't find it, fall back to default (from $BASE_LIB_DIR).
 if [[ -n $(find "$BASE_LIB_DIR" -regex ".*samza-log4j2.*.jar*") ]]; then
   if [[ $JAVA_OPTS != *-Dlog4j.configurationFile* ]]; then
     if [[ -n $(find "$APPLICATION_LIB_DIR" -maxdepth 1 -name $LOG4J2_FILE_NAME) ]]; then
       export JAVA_OPTS="$JAVA_OPTS -Dlog4j.configurationFile=file:$APPLICATION_LIB_DIR/$LOG4J2_FILE_NAME"
       # LI-ONLY CONFIG: Used to set log4j2 configurations for util-log (xeril) to be printed to the same .log file
       [[ $JAVA_OPTS != *-Dlog4j2.configuration* ]] && export JAVA_OPTS="$JAVA_OPTS -Dlog4j2.configuration=file:$APPLICATION_LIB_DIR/$LOG4J2_FILE_NAME"
     else
       export JAVA_OPTS="$JAVA_OPTS -Dlog4j.configurationFile=file:$DEFAULT_LOG4J2_FILE"
       # LI-ONLY CONFIG: Used to set log4j2 configurations for util-log (xeril) to be printed to the same .log file
       [[ $JAVA_OPTS != *-Dlog4j2.configuration* ]] && export JAVA_OPTS="$JAVA_OPTS -Dlog4j2.configuration=file:$DEFAULT_LOG4J2_FILE"
     fi
   fi
 elif [[ -n $(find "$BASE_LIB_DIR" -regex ".*samza-log4j.*.jar*") ]]; then
   if [[ $JAVA_OPTS != *-Dlog4j.configuration* ]]; then
     if [[ -n $(find "$APPLICATION_LIB_DIR" -maxdepth 1 -name $LOG4J_FILE_NAME) ]]; then
       export JAVA_OPTS="$JAVA_OPTS -Dlog4j.configuration=file:$APPLICATION_LIB_DIR/$LOG4J_FILE_NAME"
     else
       export JAVA_OPTS="$JAVA_OPTS -Dlog4j.configuration=file:$DEFAULT_LOG4J_FILE"
     fi
   fi
 fi

 # Check if samza.log.dir is specified. If not - set to environment variable if it is set
 [[ $JAVA_OPTS != *-Dsamza.log.dir* && ! -z "$SAMZA_LOG_DIR" ]] && JAVA_OPTS="$JAVA_OPTS -Dsamza.log.dir=$SAMZA_LOG_DIR"

 # Check if java.io.tmpdir is specified. If not - set to tmp in the base_dir
 [[ $JAVA_OPTS != *-Djava.io.tmpdir* ]] && JAVA_OPTS="$JAVA_OPTS -Djava.io.tmpdir=$JAVA_TEMP_DIR"

 # Check if a max-heap size is specified. If not - set a 768M heap
 [[ $JAVA_OPTS != *-Xmx* ]] && JAVA_OPTS="$JAVA_OPTS -Xmx768M"

 # Check if the GC related flags are specified. If not - add the respective flags to JVM_OPTS.
 [[ $JAVA_OPTS != *PrintGCDateStamps* && $JAVA_OPTS != *-Xloggc* ]] && JAVA_OPTS="$JAVA_OPTS -XX:+PrintGCDateStamps -Xloggc:$SAMZA_LOG_DIR/gc.log"

 # Check if GC log rotation is already enabled. If not - add the respective flags to JVM_OPTS
 [[ $JAVA_OPTS != *UseGCLogFileRotation* ]] && check_and_enable_gc_log_rotation

 # Check if 64 bit is set. If not - try and set it if it's supported
 [[ $JAVA_OPTS != *-d64* ]] && check_and_enable_64_bit_mode

 # Linkedin-specific: Add JVM option to guarantee exit on OOM
 JAVA_OPTS="${JAVA_OPTS} -XX:+ExitOnOutOfMemoryError"

 # Linkedin-specific: Add pre-installed boot jars to JVM boot class path, e.g. support Jetty Http2 communication by ALPN
 function setup_boot_jars_in_jvm_boot_classpath() {
   # Get and format java version to follow SI's convention, e.g. 1.8.0_172 to 1_8_0_172
   RAW_JAVA_VERSION=$($JAVA -version 2>&1 | awk -F '"' '/version/ {print $2}')
   FORMATTED_JAVA_VERSION=${RAW_JAVA_VERSION//./_}

   # The boot jars are pre-installed in different paths for Mac OS and Linux OS
   if [[ "$OSTYPE" == "darwin"* ]]; then
     BOOT_JAR_HOME_DIR="/Library/Java/Boot/${FORMATTED_JAVA_VERSION}/"
   else
     BOOT_JAR_HOME_DIR="/export/apps/jdkboot/${FORMATTED_JAVA_VERSION}/"
   fi

   # Add all the files under boot jar home dir in path separated with colons
   BOOT_JAR_PATHS=""
   if [ -d "${BOOT_JAR_HOME_DIR}" ]; then
     for entry in "$BOOT_JAR_HOME_DIR"*
     do
       BOOT_JAR_PATHS="${BOOT_JAR_PATHS}${entry}:"
     done
   else
     echo "No boot jar is pre-installed under dir: ${BOOT_JAR_HOME_DIR}"
   fi
   if [ -z "$BOOT_JAR_PATHS" ]; then
     return
   fi
   # Remove last colon
   BOOT_JAR_PATHS="$(echo $BOOT_JAR_PATHS | sed 's/.$//')"

   JVM_BOOT_CLASSPATH_CONFIG_KEY="-Xbootclasspath"
   # If "-Xbootclasspath" is already setup in JAVA_OPTS, rebuild the value with found boot jar paths
   if [[ "$JAVA_OPTS" =~ "$JVM_BOOT_CLASSPATH_CONFIG_KEY" ]]; then
     NEW_JAVA_OPTS=""
     for option in $JAVA_OPTS
     do
       if [[ "$option" == "${JVM_BOOT_CLASSPATH_CONFIG_KEY}"* ]]; then
         JVM_BOOT_CLASSPATH="${option}:${BOOT_JAR_PATHS}"
       else
         NEW_JAVA_OPTS="${NEW_JAVA_OPTS} $option"
       fi
     done
     JAVA_OPTS="${NEW_JAVA_OPTS}"
   else
     JVM_BOOT_CLASSPATH="${JVM_BOOT_CLASSPATH_CONFIG_KEY}/p:${BOOT_JAR_PATHS}"
   fi

   JAVA_OPTS="${JAVA_OPTS} ${JVM_BOOT_CLASSPATH}"
 }
 setup_boot_jars_in_jvm_boot_classpath

 # HADOOP_CONF_DIR should be supplied to classpath explicitly for Yarn to parse configs
 echo $JAVA $JAVA_OPTS -cp $HADOOP_CONF_DIR:$PATHING_JAR_FILE "$@"

 ## If localized resource lib directory is defined, then include it in the classpath.
 if [[ -z "${ADDITIONAL_CLASSPATH_DIR}" ]]; then
   # LI-specific: Adding option to invoke script on OOM here because adding it in JAVA_OPTS causes encoding issues https://stackoverflow.com/questions/12532051/xxonoutofmemoryerror-cmd-arg-gives-error-could-not-find-or-load-main-c
   exec $JAVA $JAVA_OPTS -XX:OnOutOfMemoryError="$BASE_LIB_DIR/../bin/handle-oom.sh $SAMZA_LOG_DIR" -cp $HADOOP_CONF_DIR:$PATHING_JAR_FILE "$@"
 else
   # LI-specific: Adding option to invoke script on OOM here because adding it in JAVA_OPTS causes encoding issues https://stackoverflow.com/questions/12532051/xxonoutofmemoryerror-cmd-arg-gives-error-could-not-find-or-load-main-c
   exec $JAVA $JAVA_OPTS -XX:OnOutOfMemoryError="$BASE_LIB_DIR/../bin/handle-oom.sh $SAMZA_LOG_DIR" -cp $HADOOP_CONF_DIR:$PATHING_JAR_FILE:$ADDITIONAL_CLASSPATH_DIR "$@"
 fi
	#!/bin/bash
	# Licensed to the Apache Software Foundation (ASF) under one
	# or more contributor license agreements. See the NOTICE file
	# distributed with this work for additional information
	# regarding copyright ownership. The ASF licenses this file
	# to you under the Apache License, Version 2.0 (the
	# "License"); you may not use this file except in compliance
	# with the License. You may obtain a copy of the License at
	#
	# http://www.apache.org/licenses/LICENSE-2.0
	#
	# Unless required by applicable law or agreed to in writing,
	# software distributed under the License is distributed on an
	# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
	# KIND, either express or implied. See the License for the
	# specific language governing permissions and limitations
	# under the License.

	if [ $# -lt 1 ];
	then
	echo "USAGE: $0 classname [opts]"
	exit 1
	fi

	home_dir=`pwd`
	base_dir=$(dirname $0)/..
	cd $base_dir
	base_dir=`pwd`
	cd $home_dir

	echo home_dir=$home_dir
	echo "framework base (location of this script). base_dir=$base_dir"

	if [ ! -d "$base_dir/lib" ]; then
	echo "Unable to find $base_dir/lib, which is required to run."
	exit 1
	fi

	HADOOP_YARN_HOME="${HADOOP_YARN_HOME:-$HOME/.samza}"
	HADOOP_CONF_DIR="${HADOOP_CONF_DIR:-$HADOOP_YARN_HOME/conf}"
	GC_LOG_ROTATION_OPTS="-XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=10241024"
	LOG4J_FILE_NAME="log4j.xml"
	LOG4J2_FILE_NAME="log4j2.xml"
	BASE_LIB_DIR="$base_dir/lib"
	DEFAULT_LOG4J_FILE=$BASE_LIB_DIR/$LOG4J_FILE_NAME
	DEFAULT_LOG4J2_FILE=$BASE_LIB_DIR/$LOG4J2_FILE_NAME

	# For Managed Beam Workflow type jobs, user jar and log4j2.xml will be placed under __userPackage/lib.
	# If __userPackage/lib exists, set APPLICATION_LIB_DIR to __userPackage/lib
	# TODO - use parameter like job type (WORKFLOW_DSL) to decide whether there is a separate user lib path
	if [ -d "$home_dir/__userPackage/lib" ]; then
	APPLICATION_LIB_DIR="$home_dir/__userPackage/lib"
	echo APPLICATION_LIB_DIR=$APPLICATION_LIB_DIR
	fi

	# APPLICATION_LIB_DIR can be a directory which is different from $BASE_LIB_DIR which contains some additional
	# application-specific resources. If it is not set, then $BASE_LIB_DIR will be used as the value.
	APPLICATION_LIB_DIR="${APPLICATION_LIB_DIR:-$BASE_LIB_DIR}"
	export APPLICATION_LIB_DIR=$APPLICATION_LIB_DIR

	echo APPLICATION_LIB_DIR=$APPLICATION_LIB_DIR
	echo BASE_LIB_DIR=$BASE_LIB_DIR

	CLASSPATH=""

	# This is LinkedIn Hadoop cluster specific dependency! The jar file is needed
	# for the Samza job to run on LinkedIn's Hadoop YARN cluster.
	# There is no clean way to include this dependency anywhere else, so we just
	# manually include it here.
	# Long term fix: make Hadoop YARN cluster officially support Samza job and prepare
	# runtime dependency for us.
	#
	if [ -e /export/apps/hadoop/site/lib/grid-topology-1.0.jar ]; then
	CLASSPATH=$CLASSPATH" /export/apps/hadoop/site/lib/grid-topology-1.0.jar \n"
	fi

	# all the jars need to be appended on newlines to ensure line argument length of 72 bytes is not violated
	for file in $BASE_LIB_DIR/*.[jw]ar;
	do
	CLASSPATH=$CLASSPATH" $file \n"
	done
	echo generated from BASE_LIB_DIR CLASSPATH=$CLASSPATH

	# when APPLICATION_LIB_DIR is different from BASE_LIB_DIR, meaning it is a Managed Beam Workflow job, append
	# user jars in __userPackage/lib to the classpath
	# TODO - In the initial version of Managed Beam Workflow job, it's ensured that no extra jars are supplied from the
	# user job besides the user jar that only contains the pipeline proto file and non-jar resources. When simple UDF
	# support is to be added, we need to ensure no jar or class collision happens while combining user jars with framework jars
	# on classpath
	USER_CLASSPATH=""
	if [ "$APPLICATION_LIB_DIR" != "$BASE_LIB_DIR" ]; then
	for file in $APPLICATION_LIB_DIR/*.[jw]ar;
	do
	USER_CLASSPATH=$USER_CLASSPATH" $file \n"
	done
	echo generated from $APPLICATION_LIB_DIR USER_CLASSPATH=$USER_CLASSPATH
	fi

	# In some cases (AWS) $JAVA_HOME/bin doesn't contain jar.
	if [ -z "$JAVA_HOME" ] \|\| [ ! -e "$JAVA_HOME/bin/jar" ]; then
	JAR="jar"
	else
	JAR="$JAVA_HOME/bin/jar"
	fi

	# Create a separate directory for writing files related to classpath management. It is easier to manage
	# permissions for the classpath-related files when they are in their own directory. An example of where
	# this is helpful is when using container images which might have predefined permissions for certain
	# directories.
	CLASSPATH_WORKSPACE_DIR=$base_dir/classpath_workspace
	mkdir -p $CLASSPATH_WORKSPACE_DIR
	# file containing the classpath string; used to avoid passing long classpaths directly to the jar command
	PATHING_MANIFEST_FILE=$CLASSPATH_WORKSPACE_DIR/manifest.txt
	# jar file to include on the classpath for running the main class
	PATHING_JAR_FILE=$CLASSPATH_WORKSPACE_DIR/pathing.jar

	# Newlines and spaces are intended to ensure proper parsing of manifest in pathing jar
	printf "Class-Path: \n $CLASSPATH \n" > $PATHING_MANIFEST_FILE
	# Creates a new archive and adds custom manifest information to pathing.jar
	eval "$JAR -cvmf $PATHING_MANIFEST_FILE $PATHING_JAR_FILE"

	if [ -z "$JAVA_HOME" ]; then
	JAVA="java"
	else
	JAVA="$JAVA_HOME/bin/java"
	fi

	if [ -z "$SAMZA_LOG_DIR" ]; then
	SAMZA_LOG_DIR="$base_dir"
	fi

	# add usercache directory
	mkdir -p $base_dir/tmp
	JAVA_TEMP_DIR=$base_dir/tmp

	# Check whether the JVM supports GC Log rotation, and enable it if so.
	function check_and_enable_gc_log_rotation {
	`$JAVA -Xloggc:/dev/null $GC_LOG_ROTATION_OPTS -version 2> /dev/null`
	if [ $? -eq 0 ] ; then
	JAVA_OPTS="$JAVA_OPTS $GC_LOG_ROTATION_OPTS"
	fi
	}

	# Try and use 64-bit mode if available in JVM_OPTS
	function check_and_enable_64_bit_mode {
	`$JAVA -d64 -version`
	if [ $? -eq 0 ] ; then
	JAVA_OPTS="$JAVA_OPTS -d64"
	fi
	}

	### Inherit JVM_OPTS from task.opts configuration, and initialize defaults ###

	# Make the MDC inheritable to child threads by setting the system property to true if config not explicitly specified
	[[ $JAVA_OPTS != -DisThreadContextMapInheritable ]] && JAVA_OPTS="$JAVA_OPTS -DisThreadContextMapInheritable=true"

	# Check if log4j configuration is specified; if not, look for a configuration file:
	# 1) Check if using log4j or log4j2
	# 2) Check if configuration file system property is already set
	# 3) If not, then look in $APPLICATION_LIB_DIR for configuration file (remember that $APPLICATION_LIB_DIR can be same or
	# different from $BASE_LIB_DIR).
	# 4) If still can't find it, fall back to default (from $BASE_LIB_DIR).
	if [[ -n $(find "$BASE_LIB_DIR" -regex ".samza-log4j2..jar*") ]]; then
	if [[ $JAVA_OPTS != -Dlog4j.configurationFile ]]; then
	if [[ -n $(find "$APPLICATION_LIB_DIR" -maxdepth 1 -name $LOG4J2_FILE_NAME) ]]; then
	export JAVA_OPTS="$JAVA_OPTS -Dlog4j.configurationFile=file:$APPLICATION_LIB_DIR/$LOG4J2_FILE_NAME"
	# LI-ONLY CONFIG: Used to set log4j2 configurations for util-log (xeril) to be printed to the same .log file
	[[ $JAVA_OPTS != -Dlog4j2.configuration ]] && export JAVA_OPTS="$JAVA_OPTS -Dlog4j2.configuration=file:$APPLICATION_LIB_DIR/$LOG4J2_FILE_NAME"
	else
	export JAVA_OPTS="$JAVA_OPTS -Dlog4j.configurationFile=file:$DEFAULT_LOG4J2_FILE"
	# LI-ONLY CONFIG: Used to set log4j2 configurations for util-log (xeril) to be printed to the same .log file
	[[ $JAVA_OPTS != -Dlog4j2.configuration ]] && export JAVA_OPTS="$JAVA_OPTS -Dlog4j2.configuration=file:$DEFAULT_LOG4J2_FILE"
	fi
	fi
	elif [[ -n $(find "$BASE_LIB_DIR" -regex ".samza-log4j..jar*") ]]; then
	if [[ $JAVA_OPTS != -Dlog4j.configuration ]]; then
	if [[ -n $(find "$APPLICATION_LIB_DIR" -maxdepth 1 -name $LOG4J_FILE_NAME) ]]; then
	export JAVA_OPTS="$JAVA_OPTS -Dlog4j.configuration=file:$APPLICATION_LIB_DIR/$LOG4J_FILE_NAME"
	else
	export JAVA_OPTS="$JAVA_OPTS -Dlog4j.configuration=file:$DEFAULT_LOG4J_FILE"
	fi
	fi
	fi

	# Check if samza.log.dir is specified. If not - set to environment variable if it is set
	[[ $JAVA_OPTS != -Dsamza.log.dir && ! -z "$SAMZA_LOG_DIR" ]] && JAVA_OPTS="$JAVA_OPTS -Dsamza.log.dir=$SAMZA_LOG_DIR"

	# Check if java.io.tmpdir is specified. If not - set to tmp in the base_dir
	[[ $JAVA_OPTS != -Djava.io.tmpdir ]] && JAVA_OPTS="$JAVA_OPTS -Djava.io.tmpdir=$JAVA_TEMP_DIR"

	# Check if a max-heap size is specified. If not - set a 768M heap
	[[ $JAVA_OPTS != -Xmx ]] && JAVA_OPTS="$JAVA_OPTS -Xmx768M"

	# Check if the GC related flags are specified. If not - add the respective flags to JVM_OPTS.
	[[ $JAVA_OPTS != PrintGCDateStamps && $JAVA_OPTS != -Xloggc ]] && JAVA_OPTS="$JAVA_OPTS -XX:+PrintGCDateStamps -Xloggc:$SAMZA_LOG_DIR/gc.log"

	# Check if GC log rotation is already enabled. If not - add the respective flags to JVM_OPTS
	[[ $JAVA_OPTS != UseGCLogFileRotation ]] && check_and_enable_gc_log_rotation

	# Check if 64 bit is set. If not - try and set it if it's supported
	[[ $JAVA_OPTS != -d64 ]] && check_and_enable_64_bit_mode

	# Linkedin-specific: Add JVM option to guarantee exit on OOM
	JAVA_OPTS="${JAVA_OPTS} -XX:+ExitOnOutOfMemoryError"

	# Linkedin-specific: Add pre-installed boot jars to JVM boot class path, e.g. support Jetty Http2 communication by ALPN
	function setup_boot_jars_in_jvm_boot_classpath() {
	# Get and format java version to follow SI's convention, e.g. 1.8.0_172 to 1_8_0_172
	RAW_JAVA_VERSION=$($JAVA -version 2>&1 \| awk -F '"' '/version/ {print $2}')
	FORMATTED_JAVA_VERSION=${RAW_JAVA_VERSION//./_}

	# The boot jars are pre-installed in different paths for Mac OS and Linux OS
	if [[ "$OSTYPE" == "darwin"* ]]; then
	BOOT_JAR_HOME_DIR="/Library/Java/Boot/${FORMATTED_JAVA_VERSION}/"
	else
	BOOT_JAR_HOME_DIR="/export/apps/jdkboot/${FORMATTED_JAVA_VERSION}/"
	fi

	# Add all the files under boot jar home dir in path separated with colons
	BOOT_JAR_PATHS=""
	if [ -d "${BOOT_JAR_HOME_DIR}" ]; then
	for entry in "$BOOT_JAR_HOME_DIR"*
	do
	BOOT_JAR_PATHS="${BOOT_JAR_PATHS}${entry}:"
	done
	else
	echo "No boot jar is pre-installed under dir: ${BOOT_JAR_HOME_DIR}"
	fi
	if [ -z "$BOOT_JAR_PATHS" ]; then
	return
	fi
	# Remove last colon
	BOOT_JAR_PATHS="$(echo $BOOT_JAR_PATHS \| sed 's/.$//')"

	JVM_BOOT_CLASSPATH_CONFIG_KEY="-Xbootclasspath"
	# If "-Xbootclasspath" is already setup in JAVA_OPTS, rebuild the value with found boot jar paths
	if [[ "$JAVA_OPTS" =~ "$JVM_BOOT_CLASSPATH_CONFIG_KEY" ]]; then
	NEW_JAVA_OPTS=""
	for option in $JAVA_OPTS
	do
	if [[ "$option" == "${JVM_BOOT_CLASSPATH_CONFIG_KEY}"* ]]; then
	JVM_BOOT_CLASSPATH="${option}:${BOOT_JAR_PATHS}"
	else
	NEW_JAVA_OPTS="${NEW_JAVA_OPTS} $option"
	fi
	done
	JAVA_OPTS="${NEW_JAVA_OPTS}"
	else
	JVM_BOOT_CLASSPATH="${JVM_BOOT_CLASSPATH_CONFIG_KEY}/p:${BOOT_JAR_PATHS}"
	fi

	JAVA_OPTS="${JAVA_OPTS} ${JVM_BOOT_CLASSPATH}"
	}
	setup_boot_jars_in_jvm_boot_classpath

	# HADOOP_CONF_DIR should be supplied to classpath explicitly for Yarn to parse configs
	echo $JAVA $JAVA_OPTS -cp $HADOOP_CONF_DIR:$PATHING_JAR_FILE "$@"

	## If localized resource lib directory is defined, then include it in the classpath.
	if [[ -z "${ADDITIONAL_CLASSPATH_DIR}" ]]; then
	# LI-specific: Adding option to invoke script on OOM here because adding it in JAVA_OPTS causes encoding issues https://stackoverflow.com/questions/12532051/xxonoutofmemoryerror-cmd-arg-gives-error-could-not-find-or-load-main-c
	exec $JAVA $JAVA_OPTS -XX:OnOutOfMemoryError="$BASE_LIB_DIR/../bin/handle-oom.sh $SAMZA_LOG_DIR" -cp $HADOOP_CONF_DIR:$PATHING_JAR_FILE "$@"
	else
	# LI-specific: Adding option to invoke script on OOM here because adding it in JAVA_OPTS causes encoding issues https://stackoverflow.com/questions/12532051/xxonoutofmemoryerror-cmd-arg-gives-error-could-not-find-or-load-main-c
	exec $JAVA $JAVA_OPTS -XX:OnOutOfMemoryError="$BASE_LIB_DIR/../bin/handle-oom.sh $SAMZA_LOG_DIR" -cp $HADOOP_CONF_DIR:$PATHING_JAR_FILE:$ADDITIONAL_CLASSPATH_DIR "$@"
	fi