84 lines
2.7 KiB
Bash
84 lines
2.7 KiB
Bash
#!/usr/bin/env bash
|
|
|
|
# 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.
|
|
|
|
|
|
# ------------------------------------------------------------------
|
|
#
|
|
# The purpose of this script is to distribute the exclude file (see
|
|
# "dfs.hosts.exclude" in hdfs-site.xml).
|
|
#
|
|
# Input of the script is a local exclude file. The exclude file
|
|
# will be distributed to all the namenodes. The location on the namenodes
|
|
# is determined by the configuration "dfs.hosts.exclude" in hdfs-site.xml
|
|
# (this value is read from the local copy of hdfs-site.xml and must be same
|
|
# on all the namenodes).
|
|
#
|
|
# The user running this script needs write permissions on the target
|
|
# directory on namenodes.
|
|
#
|
|
# After this command, run refresh-namenodes.sh so that namenodes start
|
|
# using the new exclude file.
|
|
|
|
bin=`dirname "$0"`
|
|
bin=`cd "$bin"; pwd`
|
|
|
|
if [ -e "$bin/../libexec/hdfs-config.sh" ]; then
|
|
. "$bin/../libexec/hdfs-config.sh"
|
|
else
|
|
. "$bin/hdfs-config.sh"
|
|
fi
|
|
|
|
if [ "$1" = '' ] ; then
|
|
"Error: please specify local exclude file as a first argument"
|
|
exit 1
|
|
else
|
|
excludeFilenameLocal=$1
|
|
fi
|
|
|
|
if [ ! -f "$excludeFilenameLocal" ] ; then
|
|
echo "Error: exclude file [$excludeFilenameLocal] does not exist."
|
|
exit 1
|
|
fi
|
|
|
|
namenodes=$("$HADOOP_PREFIX/bin/hdfs" getconf -namenodes)
|
|
excludeFilenameRemote=$("$HADOOP_PREFIX/bin/hdfs" getconf -excludeFile)
|
|
|
|
if [ "$excludeFilenameRemote" = '' ] ; then
|
|
echo \
|
|
"Error: hdfs getconf -excludeFile returned empty string, " \
|
|
"please setup dfs.hosts.exclude in hdfs-site.xml in local cluster " \
|
|
"configuration and on all namenodes"
|
|
exit 1
|
|
fi
|
|
|
|
echo "Copying exclude file [$excludeFilenameRemote] to namenodes:"
|
|
|
|
for namenode in $namenodes ; do
|
|
echo " [$namenode]"
|
|
scp "$excludeFilenameLocal" "$namenode:$excludeFilenameRemote"
|
|
if [ "$?" != '0' ] ; then errorFlag='1' ; fi
|
|
done
|
|
|
|
if [ "$errorFlag" = '1' ] ; then
|
|
echo "Error: transfer of exclude file failed, see error messages above."
|
|
exit 1
|
|
else
|
|
echo "Transfer of exclude file to all namenodes succeeded."
|
|
fi
|
|
|
|
# eof
|