| 1 | # Set Hadoop-specific environment variables here. |
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| 2 | |
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| 3 | # The only required environment variable is JAVA_HOME. All others are |
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| 4 | # optional. When running a distributed configuration it is best to |
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| 5 | # set JAVA_HOME in this file, so that it is correctly defined on |
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| 6 | # remote nodes. |
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| 7 | |
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| 8 | # The java implementation to use. Required. |
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| 9 | # export JAVA_HOME=/usr/lib/j2sdk1.5-sun |
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| 10 | |
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| 11 | # Extra Java CLASSPATH elements. Optional. |
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| 12 | # export HADOOP_CLASSPATH= |
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| 13 | |
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| 14 | # The maximum amount of heap to use, in MB. Default is 1000. |
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| 15 | export HADOOP_HEAPSIZE=256 |
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| 16 | |
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| 17 | # Extra Java runtime options. Empty by default. |
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| 18 | # export HADOOP_OPTS=-server |
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| 19 | |
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| 20 | # Command specific options appended to HADOOP_OPTS when specified |
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| 21 | export HADOOP_NAMENODE_OPTS="-Dcom.sun.management.jmxremote $HADOOP_NAMENODE_OPTS" |
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| 22 | export HADOOP_SECONDARYNAMENODE_OPTS="-Dcom.sun.management.jmxremote $HADOOP_SECONDARYNAMENODE_OPTS" |
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| 23 | export HADOOP_DATANODE_OPTS="-Dcom.sun.management.jmxremote $HADOOP_DATANODE_OPTS" |
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| 24 | export HADOOP_BALANCER_OPTS="-Dcom.sun.management.jmxremote $HADOOP_BALANCER_OPTS" |
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| 25 | export HADOOP_JOBTRACKER_OPTS="-Dcom.sun.management.jmxremote $HADOOP_JOBTRACKER_OPTS" |
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| 26 | # export HADOOP_TASKTRACKER_OPTS= |
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| 27 | # The following applies to multiple commands (fs, dfs, fsck, distcp etc) |
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| 28 | # export HADOOP_CLIENT_OPTS |
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| 29 | |
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| 30 | # Extra ssh options. Empty by default. |
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| 31 | # export HADOOP_SSH_OPTS="-o ConnectTimeout=1 -o SendEnv=HADOOP_CONF_DIR" |
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| 32 | |
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| 33 | # Where log files are stored. $HADOOP_HOME/logs by default. |
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| 34 | # export HADOOP_LOG_DIR=${HADOOP_HOME}/logs |
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| 35 | |
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| 36 | # File naming remote slave hosts. $HADOOP_HOME/conf/slaves by default. |
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| 37 | # export HADOOP_SLAVES=${HADOOP_HOME}/conf/slaves |
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| 38 | |
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| 39 | # host:path where hadoop code should be rsync'd from. Unset by default. |
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| 40 | # export HADOOP_MASTER=master:/home/$USER/src/hadoop |
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| 41 | |
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| 42 | # Seconds to sleep between slave commands. Unset by default. This |
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| 43 | # can be useful in large clusters, where, e.g., slave rsyncs can |
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| 44 | # otherwise arrive faster than the master can service them. |
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| 45 | # export HADOOP_SLAVE_SLEEP=0.1 |
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| 46 | |
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| 47 | # The directory where pid files are stored. /tmp by default. |
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| 48 | # export HADOOP_PID_DIR=/var/hadoop/pids |
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| 49 | |
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| 50 | # A string representing this instance of hadoop. $USER by default. |
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| 51 | # export HADOOP_IDENT_STRING=$USER |
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| 52 | |
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| 53 | # The scheduling priority for daemon processes. See 'man nice'. |
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| 54 | # export HADOOP_NICENESS=10 |
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