HADOOP-9267. hadoop -help, -h, --help should show usage instructions. Contributed by Andrew Wang.
git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1449161 13f79535-47bb-0310-9956-ffa450edef68
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@ -376,6 +376,9 @@ Release 2.0.4-beta - UNRELEASED
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HADOOP-9304. remove addition of avro genreated-sources dirs to build. (tucu)
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HADOOP-9267. hadoop -help, -h, --help should show usage instructions.
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(Andrew Wang via atm)
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Release 2.0.3-alpha - 2013-02-06
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INCOMPATIBLE CHANGES
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@ -50,6 +50,12 @@ fi
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COMMAND=$1
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case $COMMAND in
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# usage flags
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--help|-help|-h)
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print_usage
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exit
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;;
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#hdfs commands
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namenode|secondarynamenode|datanode|dfs|dfsadmin|fsck|balancer|fetchdt|oiv|dfsgroups)
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echo "DEPRECATED: Use of this script to execute hdfs command is deprecated." 1>&2
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@ -56,6 +56,14 @@ fi
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COMMAND=$1
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shift
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case $COMMAND in
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# usage flags
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--help|-help|-h)
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print_usage
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exit
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;;
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esac
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# Determine if we're starting a secure datanode, and if so, redefine appropriate variables
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if [ "$COMMAND" == "datanode" ] && [ "$EUID" -eq 0 ] && [ -n "$HADOOP_SECURE_DN_USER" ]; then
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if [ -n "$JSVC_HOME" ]; then
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@ -53,13 +53,7 @@ DEFAULT_LIBEXEC_DIR="$bin"/../libexec
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HADOOP_LIBEXEC_DIR=${HADOOP_LIBEXEC_DIR:-$DEFAULT_LIBEXEC_DIR}
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. $HADOOP_LIBEXEC_DIR/yarn-config.sh
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cygwin=false
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case "`uname`" in
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CYGWIN*) cygwin=true;;
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esac
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# if no args specified, show usage
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if [ $# = 0 ]; then
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function print_usage(){
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echo "Usage: yarn [--config confdir] COMMAND"
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echo "where COMMAND is one of:"
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echo " resourcemanager run the ResourceManager"
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@ -76,6 +70,16 @@ if [ $# = 0 ]; then
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echo " or"
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echo " CLASSNAME run the class named CLASSNAME"
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echo "Most commands print help when invoked w/o parameters."
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}
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cygwin=false
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case "`uname`" in
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CYGWIN*) cygwin=true;;
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esac
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# if no args specified, show usage
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if [ $# = 0 ]; then
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print_usage
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exit 1
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fi
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@ -83,6 +87,14 @@ fi
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COMMAND=$1
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shift
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case $COMMAND in
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# usage flags
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--help|-help|-h)
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print_usage
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exit
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;;
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esac
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if [ -f "${YARN_CONF_DIR}/yarn-env.sh" ]; then
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. "${YARN_CONF_DIR}/yarn-env.sh"
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fi
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