@rem Set Hadoop-specific environment variables here.
 
 @rem The only required environment variable is JAVA_HOME.  All others are
 @rem optional.  When running a distributed configuration it is best to
 @rem set JAVA_HOME in this file, so that it is correctly defined on
 @rem remote nodes.
 
 @rem The java implementation to use.  Required.
 set JAVA_HOME=%JAVA_HOME%
 
 set HADOOP_HOME=c:\hdp\hdp
 
 @rem The jsvc implementation to use. Jsvc is required to run secure datanodes.
 @rem set JSVC_HOME=%JSVC_HOME%
 
 set HADOOP_CONF_DIR=%HADOOP_HOME%\etc\hadoop
 
 set YARN_CONF_DIR=%HADOOP_CONF_DIR%
 set PATH=%PATH%;%HADOOP_HOME%\bin
 
 @rem Extra Java CLASSPATH elements.  Automatically insert capacity-scheduler.
 if exist %HADOOP_HOME%\contrib\capacity-scheduler (
   if not defined HADOOP_CLASSPATH (
     set HADOOP_CLASSPATH=%HADOOP_HOME%\contrib\capacity-scheduler\*.jar
   ) else (
     set HADOOP_CLASSPATH=%HADOOP_CLASSPATH%;%HADOOP_HOME%\contrib\capacity-scheduler\*.jar
   )
 )
 
 @rem The maximum amount of heap to use, in MB. Default is 1000.
 @rem set HADOOP_HEAPSIZE=
 @rem set HADOOP_NAMENODE_INIT_HEAPSIZE=""
 
 @rem Extra Java runtime options.  Empty by default.
 @rem set HADOOP_OPTS=%HADOOP_OPTS% -Djava.net.preferIPv4Stack=true
 
 @rem Command specific options appended to HADOOP_OPTS when specified
 if not defined HADOOP_SECURITY_LOGGER (
   set HADOOP_SECURITY_LOGGER=INFO,RFAS
 )
 if not defined HDFS_AUDIT_LOGGER (
   set HDFS_AUDIT_LOGGER=INFO,NullAppender
 )
 
 set HADOOP_NAMENODE_OPTS=-Dhadoop.security.logger=%HADOOP_SECURITY_LOGGER% -Dhdfs.audit.logger=%HDFS_AUDIT_LOGGER% %HADOOP_NAMENODE_OPTS%
 set HADOOP_DATANODE_OPTS=-Dhadoop.security.logger=ERROR,RFAS %HADOOP_DATANODE_OPTS%
 set HADOOP_SECONDARYNAMENODE_OPTS=-Dhadoop.security.logger=%HADOOP_SECURITY_LOGGER% -Dhdfs.audit.logger=%HDFS_AUDIT_LOGGER% %HADOOP_SECONDARYNAMENODE_OPTS%
 
 @rem The following applies to multiple commands (fs, dfs, fsck, distcp etc)
 set HADOOP_CLIENT_OPTS=-Xmx512m %HADOOP_CLIENT_OPTS%
 @rem set HADOOP_JAVA_PLATFORM_OPTS="-XX:-UsePerfData %HADOOP_JAVA_PLATFORM_OPTS%"
 
 @rem On secure datanodes, user to run the datanode as after dropping privileges
 set HADOOP_SECURE_DN_USER=%HADOOP_SECURE_DN_USER%
 
 @rem Where log files are stored.  %HADOOP_HOME%/logs by default.
 @rem set HADOOP_LOG_DIR=%HADOOP_LOG_DIR%\%USERNAME%
 
 @rem Where log files are stored in the secure data environment.
 set HADOOP_SECURE_DN_LOG_DIR=%HADOOP_LOG_DIR%\%HADOOP_HDFS_USER%
 
 @rem The directory where pid files are stored. /tmp by default.
 @rem NOTE: this should be set to a directory that can only be written to by 
 @rem       the user that will run the hadoop daemons.  Otherwise there is the
 @rem       potential for a symlink attack.
 set HADOOP_PID_DIR=%HADOOP_PID_DIR%
 set HADOOP_SECURE_DN_PID_DIR=%HADOOP_PID_DIR%
 
 @rem A string representing this instance of hadoop. %USERNAME% by default.
 set HADOOP_IDENT_STRING=%USERNAME%
 
