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#!/usr/bin/env 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.
# The Hadoop command script
#
# Environment Variables
#
# JAVA_HOME The java implementation to use. Overrides JAVA_HOME.
#
# HADOOP_CLASSPATH Extra Java CLASSPATH entries.
#
# HADOOP_HEAPSIZE The maximum amount of heap to use, in MB.
# Default is 1000.
#
# HADOOP_OPTS Extra Java runtime options.
#
# HADOOP_NAMENODE_OPTS These options are added to HADOOP_OPTS
# HADOOP_CLIENT_OPTS when the respective command is run.
# HADOOP_{COMMAND}_OPTS etc HADOOP_JT_OPTS applies to JobTracker
# for e.g. HADOOP_CLIENT_OPTS applies to
# more than one command (fs, dfs, fsck,
# dfsadmin etc)
#
# HADOOP_CONF_DIR Alternate conf dir. Default is ${HADOOP_HOME}/conf.
#
# HADOOP_ROOT_LOGGER The root appender. Default is INFO,console
#
bin=`dirname "$0"`
bin=`cd "$bin"; pwd`
. "$bin"/hadoop-config.sh
cygwin=false
case "`uname`" in
CYGWIN*) cygwin=true;;
esac
# if no args specified, show usage
if [ $# = 0 ]; then
echo "Usage: hadoop [--config confdir] COMMAND"
echo "where COMMAND is one of:"
echo " namenode -format format the DFS filesystem"
echo " secondarynamenode run the DFS secondary namenode"
echo " namenode run the DFS namenode"
echo " datanode run a DFS datanode"
echo " dfsadmin run a DFS admin client"
echo " mradmin run a Map-Reduce admin client"
echo " fsck run a DFS filesystem checking utility"
echo " fs run a generic filesystem user client"
echo " balancer run a cluster balancing utility"
echo " jobtracker run the MapReduce job Tracker node"
echo " pipes run a Pipes job"
echo " tasktracker run a MapReduce task Tracker node"
echo " job manipulate MapReduce jobs"
echo " queue get information regarding JobQueues"
echo " version print the version"
echo " jar <jar> run a jar file"
echo " distcp <srcurl> <desturl> copy file or directories recursively"
echo " archive -archiveName NAME <src>* <dest> create a hadoop archive"
echo " daemonlog get/set the log level for each daemon"
echo " or"
echo " CLASSNAME run the class named CLASSNAME"
echo "Most commands print help when invoked w/o parameters."
exit 1
fi
# get arguments
COMMAND=$1
shift
if [ -f "${HADOOP_CONF_DIR}/hadoop-env.sh" ]; then
. "${HADOOP_CONF_DIR}/hadoop-env.sh"
fi
# some Java parameters
if [ "$JAVA_HOME" != "" ]; then
#echo "run java in $JAVA_HOME"
JAVA_HOME=$JAVA_HOME
fi
if [ "$JAVA_HOME" = "" ]; then
echo "Error: JAVA_HOME is not set."
exit 1
fi
JAVA=$JAVA_HOME/bin/java
JAVA_HEAP_MAX=-Xmx1000m
# check envvars which might override default args
if [ "$HADOOP_HEAPSIZE" != "" ]; then
#echo "run with heapsize $HADOOP_HEAPSIZE"
JAVA_HEAP_MAX="-Xmx""$HADOOP_HEAPSIZE""m"
#echo $JAVA_HEAP_MAX
fi
# CLASSPATH initially contains $HADOOP_CONF_DIR
CLASSPATH="${HADOOP_CONF_DIR}"
CLASSPATH=${CLASSPATH}:$JAVA_HOME/lib/tools.jar
# for developers, add Hadoop classes to CLASSPATH
if [ -d "$HADOOP_HOME/build/classes" ]; then
CLASSPATH=${CLASSPATH}:$HADOOP_HOME/build/classes
fi
if [ -d "$HADOOP_HOME/build/webapps" ]; then
CLASSPATH=${CLASSPATH}:$HADOOP_HOME/build
fi
if [ -d "$HADOOP_HOME/build/test/classes" ]; then
CLASSPATH=${CLASSPATH}:$HADOOP_HOME/build/test/classes
fi
if [ -d "$HADOOP_HOME/build/tools" ]; then
CLASSPATH=${CLASSPATH}:$HADOOP_HOME/build/tools
fi
# so that filenames w/ spaces are handled correctly in loops below
IFS=
# for releases, add core hadoop jar & webapps to CLASSPATH
if [ -d "$HADOOP_HOME/webapps" ]; then
CLASSPATH=${CLASSPATH}:$HADOOP_HOME
fi
for f in $HADOOP_HOME/hadoop-*-core.jar; do
CLASSPATH=${CLASSPATH}:$f;
done
# add libs to CLASSPATH
for f in $HADOOP_HOME/lib/*.jar; do
CLASSPATH=${CLASSPATH}:$f;
done
if [ -d "$HADOOP_HOME/build/ivy/lib/Hadoop/common" ]; then
for f in $HADOOP_HOME/build/ivy/lib/Hadoop/common/*.jar; do
CLASSPATH=${CLASSPATH}:$f;
done
fi
for f in $HADOOP_HOME/lib/jsp-2.1/*.jar; do
CLASSPATH=${CLASSPATH}:$f;
done
for f in $HADOOP_HOME/hadoop-*-tools.jar; do
TOOL_PATH=${TOOL_PATH}:$f;
done
for f in $HADOOP_HOME/build/hadoop-*-tools.jar; do
TOOL_PATH=${TOOL_PATH}:$f;
done
# add user-specified CLASSPATH last
if [ "$HADOOP_CLASSPATH" != "" ]; then
CLASSPATH=${CLASSPATH}:${HADOOP_CLASSPATH}
fi
# default log directory & file
if [ "$HADOOP_LOG_DIR" = "" ]; then
HADOOP_LOG_DIR="$HADOOP_HOME/logs"
fi
if [ "$HADOOP_LOGFILE" = "" ]; then
HADOOP_LOGFILE='hadoop.log'
fi
# default policy file for service-level authorization
if [ "$HADOOP_POLICYFILE" = "" ]; then
HADOOP_POLICYFILE="hadoop-policy.xml"
fi
# restore ordinary behaviour
unset IFS
# figure out which class to run
if [ "$COMMAND" = "namenode" ] ; then
CLASS='org.apache.hadoop.hdfs.server.namenode.NameNode'
HADOOP_OPTS="$HADOOP_OPTS $HADOOP_NAMENODE_OPTS"
elif [ "$COMMAND" = "secondarynamenode" ] ; then
CLASS='org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode'
HADOOP_OPTS="$HADOOP_OPTS $HADOOP_SECONDARYNAMENODE_OPTS"
elif [ "$COMMAND" = "datanode" ] ; then
CLASS='org.apache.hadoop.hdfs.server.datanode.DataNode'
HADOOP_OPTS="$HADOOP_OPTS $HADOOP_DATANODE_OPTS"
elif [ "$COMMAND" = "fs" ] ; then
CLASS=org.apache.hadoop.fs.FsShell
HADOOP_OPTS="$HADOOP_OPTS $HADOOP_CLIENT_OPTS"
elif [ "$COMMAND" = "dfs" ] ; then
CLASS=org.apache.hadoop.fs.FsShell
HADOOP_OPTS="$HADOOP_OPTS $HADOOP_CLIENT_OPTS"
elif [ "$COMMAND" = "dfsadmin" ] ; then
CLASS=org.apache.hadoop.hdfs.tools.DFSAdmin
HADOOP_OPTS="$HADOOP_OPTS $HADOOP_CLIENT_OPTS"
elif [ "$COMMAND" = "mradmin" ] ; then
CLASS=org.apache.hadoop.mapred.tools.MRAdmin
HADOOP_OPTS="$HADOOP_OPTS $HADOOP_CLIENT_OPTS"
elif [ "$COMMAND" = "fsck" ] ; then
CLASS=org.apache.hadoop.hdfs.tools.DFSck
HADOOP_OPTS="$HADOOP_OPTS $HADOOP_CLIENT_OPTS"
elif [ "$COMMAND" = "balancer" ] ; then
CLASS=org.apache.hadoop.hdfs.server.balancer.Balancer
HADOOP_OPTS="$HADOOP_OPTS $HADOOP_BALANCER_OPTS"
elif [ "$COMMAND" = "jobtracker" ] ; then
CLASS=org.apache.hadoop.mapred.JobTracker
HADOOP_OPTS="$HADOOP_OPTS $HADOOP_JOBTRACKER_OPTS"
elif [ "$COMMAND" = "tasktracker" ] ; then
CLASS=org.apache.hadoop.mapred.TaskTracker
HADOOP_OPTS="$HADOOP_OPTS $HADOOP_TASKTRACKER_OPTS"
elif [ "$COMMAND" = "job" ] ; then
CLASS=org.apache.hadoop.mapred.JobClient
elif [ "$COMMAND" = "queue" ] ; then
CLASS=org.apache.hadoop.mapred.JobQueueClient
elif [ "$COMMAND" = "pipes" ] ; then
CLASS=org.apache.hadoop.mapred.pipes.Submitter
HADOOP_OPTS="$HADOOP_OPTS $HADOOP_CLIENT_OPTS"
elif [ "$COMMAND" = "version" ] ; then
CLASS=org.apache.hadoop.util.VersionInfo
HADOOP_OPTS="$HADOOP_OPTS $HADOOP_CLIENT_OPTS"
elif [ "$COMMAND" = "jar" ] ; then
CLASS=org.apache.hadoop.util.RunJar
elif [ "$COMMAND" = "distcp" ] ; then
CLASS=org.apache.hadoop.tools.DistCp
CLASSPATH=${CLASSPATH}:${TOOL_PATH}
HADOOP_OPTS="$HADOOP_OPTS $HADOOP_CLIENT_OPTS"
elif [ "$COMMAND" = "daemonlog" ] ; then
CLASS=org.apache.hadoop.log.LogLevel
HADOOP_OPTS="$HADOOP_OPTS $HADOOP_CLIENT_OPTS"
elif [ "$COMMAND" = "archive" ] ; then
CLASS=org.apache.hadoop.tools.HadoopArchives
CLASSPATH=${CLASSPATH}:${TOOL_PATH}
HADOOP_OPTS="$HADOOP_OPTS $HADOOP_CLIENT_OPTS"
elif [ "$COMMAND" = "sampler" ] ; then
CLASS=org.apache.hadoop.mapred.lib.InputSampler
HADOOP_OPTS="$HADOOP_OPTS $HADOOP_CLIENT_OPTS"
else
CLASS=$COMMAND
fi
# cygwin path translation
if $cygwin; then
CLASSPATH=`cygpath -p -w "$CLASSPATH"`
HADOOP_HOME=`cygpath -w "$HADOOP_HOME"`
HADOOP_LOG_DIR=`cygpath -w "$HADOOP_LOG_DIR"`
TOOL_PATH=`cygpath -p -w "$TOOL_PATH"`
fi
# setup 'java.library.path' for native-hadoop code if necessary
JAVA_LIBRARY_PATH=''
if [ -d "${HADOOP_HOME}/build/native" -o -d "${HADOOP_HOME}/lib/native" ]; then
JAVA_PLATFORM=`CLASSPATH=${CLASSPATH} ${JAVA} -Xmx32m org.apache.hadoop.util.PlatformName | sed -e "s/ /_/g"`
if [ -d "$HADOOP_HOME/build/native" ]; then
JAVA_LIBRARY_PATH=${HADOOP_HOME}/build/native/${JAVA_PLATFORM}/lib
fi
if [ -d "${HADOOP_HOME}/lib/native" ]; then
if [ "x$JAVA_LIBRARY_PATH" != "x" ]; then
JAVA_LIBRARY_PATH=${JAVA_LIBRARY_PATH}:${HADOOP_HOME}/lib/native/${JAVA_PLATFORM}
else
JAVA_LIBRARY_PATH=${HADOOP_HOME}/lib/native/${JAVA_PLATFORM}
fi
fi
fi
# cygwin path translation
if $cygwin; then
JAVA_LIBRARY_PATH=`cygpath -p "$JAVA_LIBRARY_PATH"`
fi
HADOOP_OPTS="$HADOOP_OPTS -Dhadoop.log.dir=$HADOOP_LOG_DIR"
HADOOP_OPTS="$HADOOP_OPTS -Dhadoop.log.file=$HADOOP_LOGFILE"
HADOOP_OPTS="$HADOOP_OPTS -Dhadoop.home.dir=$HADOOP_HOME"
HADOOP_OPTS="$HADOOP_OPTS -Dhadoop.id.str=$HADOOP_IDENT_STRING"
HADOOP_OPTS="$HADOOP_OPTS -Dhadoop.root.logger=${HADOOP_ROOT_LOGGER:-INFO,console}"
if [ "x$JAVA_LIBRARY_PATH" != "x" ]; then
HADOOP_OPTS="$HADOOP_OPTS -Djava.library.path=$JAVA_LIBRARY_PATH"
fi
HADOOP_OPTS="$HADOOP_OPTS -Dhadoop.policy.file=$HADOOP_POLICYFILE"
# run it
exec "$JAVA" $JAVA_HEAP_MAX $HADOOP_OPTS -classpath "$CLASSPATH" $CLASS "$@"
|
