cygwinを使ってhadoopを設定しようとしています。 unix環境を初めて使用するときにhadoop-env.shを設定すると、このEOFエラーが発生します。
# 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=${"C:\Java\"}
# The jsvc implementation to use. Jsvc is required to run secure datanodes
# that bind to privileged ports to provide authentication of data transfer
# protocol. Jsvc is not required if SASL is configured for authentication of
# data transfer protocol using non-privileged ports.
#export JSVC_HOME=${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=$f
fi
done
# The maximum amount of heap to use, in MB. Default is 1000.
#export HADOOP_HEAPSIZE=
#export HADOOP_NAMENODE_INIT_HEAPSIZE=""
# Extra Java runtime options. Empty by default.
export HADOOP_OPTS="$HADOOP_OPTS -Djava.net.preferIPv4Stack=true"
# Command specific options appended to HADOOP_OPTS when specified
export 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 $HADOOP_JAVA_PLATFORM_OPTS"
# On secure datanodes, user to run the datanode as after dropping privileges.
# This **MUST** be uncommented to enable secure HDFS if using privileged ports
# to provide authentication of data transfer protocol. This **MUST NOT** be
# defined if SASL is configured for authentication of data transfer protocol
# using non-privileged ports.
export HADOOP_SECURE_DN_USER=${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
これはエラーです。
/home/mahmoud/hadoop-2.7.1/etc/hadoop/hadoop-env.sh: line 62: unexpected EOF while looking for matching `"'
/home/mahmoud/hadoop-2.7.1/etc/hadoop/hadoop-env.sh: line 87: syntax error: unexpected end of file
助けてくれてありがとう。
答え1
引用符は通常大丈夫に見えますが、次の行で問題が発生する可能性があります。
export JAVA_HOME=${"C:\Java\"}
の最初の使用法は"
エスケープされませんが、2番目の使用法はエスケープされます。この'\'
役割は次の役割を果たします。脱出するシェルスクリプトで次の文字の意味を変更します。シェルは、Cygwin ポートや MinGW ポートなど、末尾のバックスラッシュを提供しようとしているかどうかはわかりません。もしあなたならした、各バックスラッシュを2倍に増やすことがこれを行う方法です。
確認:たとえば、デフォルトのWindowsシステムを癒すために、ランタイムはスラッシュをバックスラッシュに変換しますか?可能であれば、スクリプトを簡単に使用できます。
にコメントを残してください
export JAVA_HOME=${"C:\Java\"}
そして助けもありません${
。}
君は必ず必要なことだけすればいい
export JAVA_HOME="C:\\Java\\"
'${and '}
分離パラメータ拡張。原則として、中括弧内で置換を実行できます。たとえば、スラッシュをバックスラッシュに変更します。
FORWARD_HOME='C:/Java/'
export JAVA_HOME=${FORWARD_HOME//\//\\}
追加資料:
- Cygwinから空白を含むJAVA_HOMEをエクスポートする
- CygwinでJAVA_HOMEを設定する方法
- 3.5.3 シェルパラメータの拡張、特に
${parameter/pattern/string}
- スラッシュを二重引用符内の二重バックスラッシュに置き換えます。