为了方便大家修，我把要修改的地方标红了，找到对应文件，复制粘贴过去就可以了
注：这个是我安装的Hadoop的配置，要根据我之前发的文章配置才行，
里面有一些东西比如文件夹名称，路径不一样，稍加修改也可以用。
配置文件在/hadoop-2.5.2/etc/hadoop/下
core-site.xml
fs.defaultFS hdfs://master:9000 hadoop.tmp.dir /home/zkpk/hadoopdata
hdfs-site.xml
mapred-site.xml.templatedfs.replication 1
yarn-xite.xmlmapreduce.framework.name yarn
hadoop-env.shyarn.nodemanager.aux-services mapreduce_shuffle yarn.resourcemanager.address master:18040 yarn.resourcemanager.scheduler.address master:18030 yarn.resourcemanager.resource-tracker.address master:18025 yarn.resourcemanager.admin.address master:18041 yarn.resourcemanager.webapp.address master:18088
这里就把Java的路径改一下就行
# 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.# Set Hadoop-specific environment variables here.# The only required environment variable is JAVA_HOME. All others are# optional. When running a distributed configuration it is best to# set JAVA_HOME in this file, so that it is correctly defined on# remote nodes.# The java implementation to use.export JAVA_HOME=/usr/java/jdk1.7.0_71/ //java的安装路径# The jsvc implementation to use. Jsvc is required to run secure datanodes.#export JSVC_HOME=${JSVC_HOME}export HADOOP_CONF_DIR=${HADOOP_CONF_DIR:-"/etc/hadoop"}# Extra Java CLASSPATH elements. Automatically insert capacity-scheduler.for f in $HADOOP_HOME/contrib/capacity-scheduler/*.jar; do if [ "$HADOOP_CLASSPATH" ]; then export HADOOP_CLASSPATH=$HADOOP_CLASSPATH:$f else export HADOOP_CLASSPATH=$f fidone# The maximum amount of heap to use, in MB. Default is 1000.#export HADOOP_HEAPSIZE=#export HADOOP_NAMENODE_INIT_HEAPSIZE=""# Extra Java runtime options. Empty by default.export HADOOP_OPTS="$HADOOP_OPTS -Djava.net.preferIPv4Stack=true"# Command specific options appended to HADOOP_OPTS when specifiedexport HADOOP_NAMENODE_OPTS="-Dhadoop.security.logger=${HADOOP_SECURITY_LOGGER:-INFO,RFAS} -Dhdfs.audit.logger=${HDFS_AUDIT_LOGGER:-INFO,NullAppender} $HADOOP_NAMENODE_OPTS"export HADOOP_DATANODE_OPTS="-Dhadoop.security.logger=ERROR,RFAS $HADOOP_DATANODE_OPTS"export HADOOP_SECONDARYNAMENODE_OPTS="-Dhadoop.security.logger=${HADOOP_SECURITY_LOGGER:-INFO,RFAS} -Dhdfs.audit.logger=${HDFS_AUDIT_LOGGER:-INFO,NullAppender} $HADOOP_SECONDARYNAMENODE_OPTS"export HADOOP_NFS3_OPTS="$HADOOP_NFS3_OPTS"export HADOOP_PORTMAP_OPTS="-Xmx512m $HADOOP_PORTMAP_OPTS"# The following applies to multiple commands (fs, dfs, fsck, distcp etc)export HADOOP_CLIENT_OPTS="-Xmx512m $HADOOP_CLIENT_OPTS"#HADOOP_JAVA_PLATFORM_OPTS="-XX:-UsePerfData $HADOOP_JAVA_PLATFORM_OPTS"# On secure datanodes, user to run the datanode as after dropping privilegesexport HADOOP_SECURE_DN_USER=${HADOOP_SECURE_DN_USER}# Where log files are stored. $HADOOP_HOME/logs by default.#export HADOOP_LOG_DIR=${HADOOP_LOG_DIR}/$USER# Where log files are stored in the secure data environment.export HADOOP_SECURE_DN_LOG_DIR=${HADOOP_LOG_DIR}/${HADOOP_HDFS_USER}# The directory where pid files are stored. /tmp by default.# NOTE: this should be set to a directory that can only be written to by # the user that will run the hadoop daemons. Otherwise there is the# potential for a symlink attack.export HADOOP_PID_DIR=${HADOOP_PID_DIR}export HADOOP_SECURE_DN_PID_DIR=${HADOOP_PID_DIR}# A string representing this instance of hadoop. $USER by default.export HADOOP_IDENT_STRING=$USER yarn-env.sh # 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.# User for YARN daemonsexport HADOOP_YARN_USER=${HADOOP_YARN_USER:-yarn}# resolve links - $0 may be a softlinkexport YARN_CONF_DIR="${YARN_CONF_DIR:-$HADOOP_YARN_HOME/conf}"# some Java parametersexport JAVA_HOME=/usr/java/jdk1.7.0_71/ //java安装路径if [ "$JAVA_HOME" != "" ]; then #echo "run java in $JAVA_HOME" JAVA_HOME=$JAVA_HOMEfi if [ "$JAVA_HOME" = "" ]; then echo "Error: JAVA_HOME is not set." exit 1fiJAVA=$JAVA_HOME/bin/javaJAVA_HEAP_MAX=-Xmx1000m # For setting YARN specific HEAP sizes please use this# Parameter and set appropriately# YARN_HEAPSIZE=1000# check envvars which might override default argsif [ "$YARN_HEAPSIZE" != "" ]; then JAVA_HEAP_MAX="-Xmx""$YARN_HEAPSIZE""m"fi# Resource Manager specific parameters# Specify the max Heapsize for the ResourceManager using a numerical value# in the scale of MB. For example, to specify an jvm option of -Xmx1000m, set# the value to 1000.# This value will be overridden by an Xmx setting specified in either YARN_OPTS# and/or YARN_RESOURCEMANAGER_OPTS.# If not specified, the default value will be picked from either YARN_HEAPMAX# or JAVA_HEAP_MAX with YARN_HEAPMAX as the preferred option of the two.#export YARN_RESOURCEMANAGER_HEAPSIZE=1000# Specify the max Heapsize for the timeline server using a numerical value# in the scale of MB. For example, to specify an jvm option of -Xmx1000m, set# the value to 1000.# This value will be overridden by an Xmx setting specified in either YARN_OPTS# and/or YARN_TIMELINESERVER_OPTS.# If not specified, the default value will be picked from either YARN_HEAPMAX# or JAVA_HEAP_MAX with YARN_HEAPMAX as the preferred option of the two.#export YARN_TIMELINESERVER_HEAPSIZE=1000# Specify the JVM options to be used when starting the ResourceManager.# These options will be appended to the options specified as YARN_OPTS# and therefore may override any similar flags set in YARN_OPTS#export YARN_RESOURCEMANAGER_OPTS=# Node Manager specific parameters# Specify the max Heapsize for the NodeManager using a numerical value# in the scale of MB. For example, to specify an jvm option of -Xmx1000m, set# the value to 1000.# This value will be overridden by an Xmx setting specified in either YARN_OPTS# and/or YARN_NODEMANAGER_OPTS.# If not specified, the default value will be picked from either YARN_HEAPMAX# or JAVA_HEAP_MAX with YARN_HEAPMAX as the preferred option of the two.#export YARN_NODEMANAGER_HEAPSIZE=1000# Specify the JVM options to be used when starting the NodeManager.# These options will be appended to the options specified as YARN_OPTS# and therefore may override any similar flags set in YARN_OPTS#export YARN_NODEMANAGER_OPTS=# so that filenames w/ spaces are handled correctly in loops belowIFS=# default log directory & fileif [ "$YARN_LOG_DIR" = "" ]; then YARN_LOG_DIR="$HADOOP_YARN_HOME/logs"fiif [ "$YARN_LOGFILE" = "" ]; then YARN_LOGFILE='yarn.log'fi# default policy file for service-level authorizationif [ "$YARN_POLICYFILE" = "" ]; then YARN_POLICYFILE="hadoop-policy.xml"fi# restore ordinary behaviourunset IFSYARN_OPTS="$YARN_OPTS -Dhadoop.log.dir=$YARN_LOG_DIR"YARN_OPTS="$YARN_OPTS -Dyarn.log.dir=$YARN_LOG_DIR"YARN_OPTS="$YARN_OPTS -Dhadoop.log.file=$YARN_LOGFILE"YARN_OPTS="$YARN_OPTS -Dyarn.log.file=$YARN_LOGFILE"YARN_OPTS="$YARN_OPTS -Dyarn.home.dir=$YARN_COMMON_HOME"YARN_OPTS="$YARN_OPTS -Dyarn.id.str=$YARN_IDENT_STRING"YARN_OPTS="$YARN_OPTS -Dhadoop.root.logger=${YARN_ROOT_LOGGER:-INFO,console}"YARN_OPTS="$YARN_OPTS -Dyarn.root.logger=${YARN_ROOT_LOGGER:-INFO,console}"if [ "x$JAVA_LIBRARY_PATH" != "x" ]; then YARN_OPTS="$YARN_OPTS -Djava.library.path=$JAVA_LIBRARY_PATH"fi YARN_OPTS="$YARN_OPTS -Dyarn.policy.file=$YARN_POLICYFILE"