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stop hadoop services in correct order

What is The Correct Order to Stop Hadoop Services in Ambari Manually

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Before performing any upgrades or uninstalling software, stop all of the Hadoop services in the following order: RangerKnoxOozieWebHCatHiveServer2Hive MetastoreHBaseYARNHDFSZooKeeperHueStormKafkaAtlas In our last post we discussed about...
What is The Correct Order to Start Hadoop Services in Ambari Manually

What is The Correct Order to Start Hadoop Services in Ambari Manually

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In ambari webui there is an option to start all the services with one click, Some times that start all option will not work properly due to some technical challenges then what...
Hadoop Datanode Decommission tuning process

Hadoop Datanode Decommission Tuning Process

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Before start the decommission of hadoop datanode we better to recheck some key points to avoid issues in middle of decommission.Here i am sharing hadoop datanode decommission tuning process steps based on...
Hadoo Datanode Decommission Common Issues

Hadoop Datanode Decommission Common Issues

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When we are start doing the datanode service decommission process the best choice is to go with 1 or 2 servers depends on your no. of servers and rack configuration. Here i...
Shell Script to Run Commands on Multiple Servers from One Server

Shell Script to Run Commands on Multiple Servers from One Server

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If you have 100 nodes cluster and you want to find out uptime of all 100 servers. If any tool installed on your node, that can help you to run commands on...
Hadoop-hdfs-mapreduce-Smoketest

Hadoop Smoke Test Script For Hortonworks

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As a admin we will do lot of daily activities on our hadoop clusters. Some of them are minor/configuration changes and some are major changes like Patching / Upgrades. For the minor...
Data-analytics-studio-das-CDP

Data Analytics Studio (DAS) Replace of Hue Hive Views in CDP

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We all know in the year of 2018 October 3 the biggest hadoop compositors cloudera distribution hadoop (CDH) and Hortonworks data platform (HDP) both merged and announced the new product called Cloudera...
difference-between-hadoop-2-and-hadoop-3

Difference Between Hadoop 2 and Hadoop 3

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Hadoop 3 version was released on 2017 and comes with some new features to override the drawbacks in hadoop 2 version. In this article we can learn what are the major and...

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