Hadoop Admin

Responsibilities

• Deploying and maintaining the Hadoop cluster, adding and removing nodes using cluster monitoring tools like Ganglia, Nagios or Cloudera Manager, and configuring NameNode high availability.
• Keeping a track of all the running Hadoop jobs.
• Implementing, managing and administering the overall Hadoop infrastructure.
• Taking care of the day-to-day running of Hadoop clusters.
• Work closely with the database team, network team, BI team and application teams to make sure that all the big data applications are highly available and performing as expected.
• Knowledge of Apache Distribution; manually set up all the configurations:
• CoreSite
• HDFS Site
• YARN Site
• MapRed Site
• Aware of the configuration setup using Hadoop distributions like Hortonworks, Cloudera or MapR.
• Capacity planning and estimating the requirements for lowering or increasing the capacity of the Hadoop cluster, deciding the size of the Hadoop cluster based on the data to be stored in HDFS.
• Ensure that the Hadoop cluster is up and running all the time, monitoring the cluster connectivity and performance.
• Manage and review Hadoop log files, backup and recovery tasks, resource and security management.
• Troubleshooting application errors.