karthick-rn commented on a change in pull request #284: Support (optional) HA capabilities for Hadoop & Accumulo URL: https://github.com/apache/fluo-muchos/pull/284#discussion_r326336073
########## File path: ansible/hadoop-ha.yml ########## @@ -0,0 +1,44 @@ +# +# 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. +# + +- hosts: all:!{{ azure_proxy_host }} Review comment: Whilst configuring HA, there is a mixture of tasks like starting services, format Namenode & Zookeeper, bootstrap Standby Namenode - all these tasks follow an order of sequence. This is not possible using `start-dfs.sh` as the script only starts the services. I'm sharing this [doc](https://hadoop.apache.org/docs/r2.7.2/hadoop-project-dist/hadoop-hdfs/HDFSHighAvailabilityWithQJM.html#Deployment_details) from Apache for more info. Let me know for any further questions? Thanks ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services
