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
This commit is contained in:
Aaron Myers 2013-02-22 18:36:24 +00:00
parent cdb292f44c
commit 8271fae921
4 changed files with 36 additions and 7 deletions

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@ -376,6 +376,9 @@ Release 2.0.4-beta - UNRELEASED
HADOOP-9304. remove addition of avro genreated-sources dirs to build. (tucu)
HADOOP-9267. hadoop -help, -h, --help should show usage instructions.
(Andrew Wang via atm)
Release 2.0.3-alpha - 2013-02-06
INCOMPATIBLE CHANGES

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@ -50,6 +50,12 @@ 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)
echo "DEPRECATED: Use of this script to execute hdfs command is deprecated." 1>&2

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@ -56,6 +56,14 @@ fi
COMMAND=$1
shift
case $COMMAND in
# usage flags
--help|-help|-h)
print_usage
exit
;;
esac
# Determine if we're starting a secure datanode, and if so, redefine appropriate variables
if [ "$COMMAND" == "datanode" ] && [ "$EUID" -eq 0 ] && [ -n "$HADOOP_SECURE_DN_USER" ]; then
if [ -n "$JSVC_HOME" ]; then

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@ -53,13 +53,7 @@ DEFAULT_LIBEXEC_DIR="$bin"/../libexec
HADOOP_LIBEXEC_DIR=${HADOOP_LIBEXEC_DIR:-$DEFAULT_LIBEXEC_DIR}
. $HADOOP_LIBEXEC_DIR/yarn-config.sh
cygwin=false
case "`uname`" in
CYGWIN*) cygwin=true;;
esac
# if no args specified, show usage
if [ $# = 0 ]; then
function print_usage(){
echo "Usage: yarn [--config confdir] COMMAND"
echo "where COMMAND is one of:"
echo " resourcemanager run the ResourceManager"
@ -76,6 +70,16 @@ if [ $# = 0 ]; then
echo " or"
echo " CLASSNAME run the class named CLASSNAME"
echo "Most commands print help when invoked w/o parameters."
}
cygwin=false
case "`uname`" in
CYGWIN*) cygwin=true;;
esac
# if no args specified, show usage
if [ $# = 0 ]; then
print_usage
exit 1
fi
@ -83,6 +87,14 @@ fi
COMMAND=$1
shift
case $COMMAND in
# usage flags
--help|-help|-h)
print_usage
exit
;;
esac
if [ -f "${YARN_CONF_DIR}/yarn-env.sh" ]; then
. "${YARN_CONF_DIR}/yarn-env.sh"
fi