| #!/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" > /dev/null; 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 [ "$COMMAND" = "key" ] ; then |
| CLASS=org.apache.hadoop.crypto.key.KeyShell |
| elif [ "$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 |