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Posted to hdfs-user@hadoop.apache.org by Radhe Radhe <ra...@live.com> on 2014/04/15 21:25:22 UTC
Apache Hadoop 2.x installation *environment variables*
Hello All,
For Apache Hadoop 2.x (YARN) installation which *environment variables* are REALLY needed.
By referring to various blogs I am getting a mix:
HADOOP_COMMON_HOMEHADOOP_CONF_DIRHADOOP_HDFS_HOMEHADOOP_HOMEHADOOP_MAPRED_HOMEHADOOP_PREFIXYARN_HOME
HADOOP_COMMON_HOMEHADOOP_CONF_DIRHADOOP_HDFS_HOMEHADOOP_PREFIXHADOOP_MAPRED_HOMEHADOOP_YARN_HOMEYARN_CONF_DIRMAPRED_CONF_DIRYARN_CLASSPATH
HADOOP_COMMON_HOMEHADOOP_CONF_DIRHADOOP_HDFS_HOMEHADOOP_HOMEHADOOP_MAPRED_HOMEHADOOP_YARN_HOME
HADOOP_COMMON_HOMEHADOOP_CONF_DIRHADOOP_HDFS_HOMEHADOOP_HOMEHADOOP_MAPRED_HOMEYARN_HOME
>From Apache Hadoop Site:
$HADOOP_COMMON_HOME $HADOOP_CONF_DIR$HADOOP_HDFS_HOME$HADOO_MAPRED_HOME $HADOOP_YARN_HOME$YARN_CONF_DIR the same as $HADOOP_CONF_DIR
Thanks,-RR