Created
March 5, 2014 10:59
-
-
Save alesj/9365153 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Skywalker:bin alesj$ more hadoop | |
#!/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. | |
# This script runs the hadoop core commands. | |
bin=`which $0` | |
bin=`dirname ${bin}` | |
bin=`cd "$bin"; pwd` | |
DEFAULT_LIBEXEC_DIR="$bin"/../libexec | |
HADOOP_LIBEXEC_DIR=${HADOOP_LIBEXEC_DIR:-$DEFAULT_LIBEXEC_DIR} | |
. $HADOOP_LIBEXEC_DIR/hadoop-config.sh | |
function print_usage(){ | |
echo "Usage: hadoop [--config confdir] COMMAND" | |
echo " where COMMAND is one of:" | |
echo " fs run a generic filesystem user client" | |
echo " version print the version" | |
echo " jar <jar> run a jar file" | |
echo " checknative [-a|-h] check native hadoop and compression libraries availability" | |
echo " distcp <srcurl> <desturl> copy file or directories recursively" | |
echo " archive -archiveName NAME -p <parent path> <src>* <dest> create a hadoop archive" | |
echo " classpath prints the class path needed to get the" | |
echo " Hadoop jar and the required libraries" | |
echo " daemonlog get/set the log level for each daemon" | |
echo " or" | |
echo " CLASSNAME run the class named CLASSNAME" | |
echo "" | |
echo "Most commands print help when invoked w/o parameters." | |
} | |
if [ $# = 0 ]; then | |
print_usage | |
exit | |
fi | |
COMMAND=$1 | |
case $COMMAND in | |
# usage flags | |
--help|-help|-h) | |
print_usage | |
exit | |
;; | |
#hdfs commands | |
namenode|secondarynamenode|datanode|dfs|dfsadmin|fsck|balancer|fetchdt|oiv|dfsgroups|portmap|nfs3) | |
echo "DEPRECATED: Use of this script to execute hdfs command is deprecated." 1>&2 | |
echo "Instead use the hdfs command for it." 1>&2 | |
echo "" 1>&2 | |
#try to locate hdfs and if present, delegate to it. | |
shift | |
if [ -f "${HADOOP_HDFS_HOME}"/bin/hdfs ]; then | |
exec "${HADOOP_HDFS_HOME}"/bin/hdfs ${COMMAND/dfsgroups/groups} "$@" | |
elif [ -f "${HADOOP_PREFIX}"/bin/hdfs ]; then | |
exec "${HADOOP_PREFIX}"/bin/hdfs ${COMMAND/dfsgroups/groups} "$@" | |
else | |
echo "HADOOP_HDFS_HOME not found!" | |
exit 1 | |
fi | |
;; | |
#mapred commands for backwards compatibility | |
pipes|job|queue|mrgroups|mradmin|jobtracker|tasktracker) | |
echo "DEPRECATED: Use of this script to execute mapred command is deprecated." 1>&2 | |
echo "Instead use the mapred command for it." 1>&2 | |
echo "" 1>&2 | |
#try to locate mapred and if present, delegate to it. | |
shift | |
if [ -f "${HADOOP_MAPRED_HOME}"/bin/mapred ]; then | |
exec "${HADOOP_MAPRED_HOME}"/bin/mapred ${COMMAND/mrgroups/groups} "$@" | |
elif [ -f "${HADOOP_PREFIX}"/bin/mapred ]; then | |
exec "${HADOOP_PREFIX}"/bin/mapred ${COMMAND/mrgroups/groups} "$@" | |
else | |
echo "HADOOP_MAPRED_HOME not found!" | |
exit 1 | |
fi | |
;; | |
classpath) | |
echo $CLASSPATH | |
exit | |
;; | |
#core commands | |
*) | |
# the core commands | |
if [ "$COMMAND" = "fs" ] ; then | |
CLASS=org.apache.hadoop.fs.FsShell | |
elif [ "$COMMAND" = "version" ] ; then | |
CLASS=org.apache.hadoop.util.VersionInfo | |
elif [ "$COMMAND" = "jar" ] ; then | |
CLASS=org.apache.hadoop.util.RunJar | |
elif [ "$COMMAND" = "checknative" ] ; then | |
CLASS=org.apache.hadoop.util.NativeLibraryChecker | |
elif [ "$COMMAND" = "distcp" ] ; then | |
CLASS=org.apache.hadoop.tools.DistCp | |
CLASSPATH=${CLASSPATH}:${TOOL_PATH} | |
elif [ "$COMMAND" = "daemonlog" ] ; then | |
CLASS=org.apache.hadoop.log.LogLevel | |
elif [ "$COMMAND" = "archive" ] ; then | |
CLASS=org.apache.hadoop.tools.HadoopArchives | |
CLASSPATH=${CLASSPATH}:${TOOL_PATH} | |
elif [[ "$COMMAND" = -* ]] ; then | |
# class and package names cannot begin with a - | |
echo "Error: No command named \`$COMMAND' was found. Perhaps you meant \`hadoop ${COMMAND#-}'" | |
exit 1 | |
else | |
CLASS=$COMMAND | |
fi | |
shift | |
# Always respect HADOOP_OPTS and HADOOP_CLIENT_OPTS | |
HADOOP_OPTS="$HADOOP_OPTS $HADOOP_CLIENT_OPTS" | |
#make sure security appender is turned off | |
HADOOP_OPTS="$HADOOP_OPTS -Dhadoop.security.logger=${HADOOP_SECURITY_LOGGER:-INFO,NullAppender}" | |
export CLASSPATH=$CLASSPATH | |
exec "$JAVA" $JAVA_HEAP_MAX $HADOOP_OPTS $CLASS "$@" | |
;; | |
esac | |
Skywalker:bin alesj$ |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment