hadoop-config.sh
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上传日期:2018-01-08
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- # 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.
- # included in all the hadoop scripts with source command
- # should not be executable directly
- # also should not be passed any arguments, since we need original $*
- # resolve links - $0 may be a softlink
- this="$0"
- while [ -h "$this" ]; do
- ls=`ls -ld "$this"`
- link=`expr "$ls" : '.*-> (.*)$'`
- if expr "$link" : '.*/.*' > /dev/null; then
- this="$link"
- else
- this=`dirname "$this"`/"$link"
- fi
- done
- # convert relative path to absolute path
- bin=`dirname "$this"`
- script=`basename "$this"`
- bin=`cd "$bin"; pwd`
- this="$bin/$script"
- # the root of the Hadoop installation
- export HADOOP_HOME=`dirname "$this"`/..
- #check to see if the conf dir is given as an optional argument
- if [ $# -gt 1 ]
- then
- if [ "--config" = "$1" ]
- then
- shift
- confdir=$1
- shift
- HADOOP_CONF_DIR=$confdir
- fi
- fi
-
- # Allow alternate conf dir location.
- HADOOP_CONF_DIR="${HADOOP_CONF_DIR:-$HADOOP_HOME/conf}"
- #check to see it is specified whether to use the slaves or the
- # masters file
- if [ $# -gt 1 ]
- then
- if [ "--hosts" = "$1" ]
- then
- shift
- slavesfile=$1
- shift
- export HADOOP_SLAVES="${HADOOP_CONF_DIR}/$slavesfile"
- fi
- fi