| #!/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. |
| |
| |
| # ------------------------------------------------------------------ |
| # This script refreshes all namenodes, it's a simple wrapper |
| # for dfsadmin to support multiple namenodes. |
| |
| bin=`dirname "$0"` |
| bin=`cd "$bin"; pwd` |
| |
| . "$bin/hdfs-config.sh" |
| |
| namenodes=$("$HADOOP_HDFS_HOME/bin/hdfs" getconf -namenodes) |
| |
| for namenode in $namenodes ; do |
| echo "Refreshing namenode [$namenode]" |
| "$HADOOP_HDFS_HOME/bin/hdfs" dfsadmin -refreshNodes |
| if [ "$?" != '0' ] ; then errorFlag='1' ; fi |
| done |
| |
| if [ "$errorFlag" = '1' ] ; then |
| echo "Error: refresh of namenodes failed, see error messages above." |
| exit 1 |
| else |
| echo "Refresh of all namenodes succeeded." |
| fi |
| |
| |
| # eof |