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Sr Hadoop Administrator Resume

El Segundo, CA


  • Around 6 years of IT experience in Administering, Installing, Configuring and Maintaining Hadoop and Linux clusters
  • Around 4 yrs. of experience working on Hadoop eco - system
  • Experience in configuring, installing and managing both Cloudera and Hortonworks Hadoop Distributions.
  • Experience in loading data into Oracle Database 12c using Orcale BDA.
  • Extensive Experience in understanding the client’s Big Data business requirements and transform it into Hadoop centric technologies
  • Analyzing the clients existing Hadoop infrastructure and understanding the performance Bottlenecks and provide the performance tuning accordingly
  • Experience with Installing Hadoop in new servers and rebuild existing servers
  • Experience in Installing Hadoop patches, major and minor version upgrades of Cloudera distributions Platform
  • Experience in using Automation tools like Puppet for installing, configuring and maintaining Hadoop clusters
  • Experience in using Cloudera Manager for installation and management of Hadoop Cluster
  • Experience in setting up Backup Disaster recovery ( BDR) in Cloudera distribution.
  • Expertise in writing Shell scripts and Perl scripts and debugging existing scripts
  • Experience in setting up automated 24x7 on monitoring and escalation infrastructure for Hadoop Cluster using Nagios and Ganglia
  • Experience in Performance Management of Hadoop Cluster
  • Experience in using Flume to load log files into HDFS
  • Expertise in using Oozie for configuring job flows
  • Managing the configuration of the cluster to meet the needs of data analysis whether I/O bound or CPU bound
  • Developed Hive Queries and automated those queries for analyzing on Hourly, Daily and Weekly Basis
  • Data loading to hadoop and hive using sqoop from MySQL, oracle and db2
  • Experience in importing and exporting the preprocessed data into the commercial
  • Analytic database, e.g. RDBMS
  • Providing training to users to make Hadoop usability simple and updating them for best practices.
  • Implemented both Fair scheduling and capacity scheduling on clusters with MapReduce and Yarn
  • Hands on experience in PIG Latin scripts to transform, cleanse and parse data in HDFS
  • Experience in deploying Hadoop cluster on Public and Private Cloud Environment like Amazon AWS
  • Performed benchmarking and analysis using Test DFSIO and Terasort.


Hadoop Ecosystem Components: HDFS, MapReduce, YARN, Pig, Hive, Oozie, HBase, Sqoop, Flume, Zookeeper, Spark, Solr, Impala, Hue

Languages and Technologies: Core Java, C, C++.

Operating Systems: Windows, Linux & Unix

Scripting Languages: Bash, Perl, Python and Shell scripting

Other: Puppet, Chef, Nagios, Ganglia, MySql


Sr Hadoop Administrator

Confidential, El Segundo, CA

Environment: MapReduce, YARN, Pig, Hive, Oozie, HBase, Sqoop, Flume, Kafka, NIfi, Zookeeper, Spark, Solr, Impala, Hue, Orcale BDA, Cloudera Manager and Hortonworks


  • Managed multiple Hadoop clusters with the highest capacity of 1500TB (1.4) PB with Kerberos Enabled.
  • Responsible for Cluster maintenance, Adding and removing cluster nodes, Cluster Monitoring and Troubleshooting, Manage and review data backups, Manage and review Hadoop log files.
  • Responsible for architecting Hadoop clusters with Cloudera CDH4, CDH5 and Hortonworks distribution platform HDP 2.2.8 and HDP 2.5.3.
  • Installed Cloudera distribution of hadoop on both physical and as well cloud based servers(AWS cloud based servers).
  • Installed Oracle BDA Cloudera 4.0 from scratch for use case that involves unstructured data.
  • Responsible for Performance tuning of Oracle BDA cluster and setting up Oracle Nosql Databases for the same.
  • Experience in Installation and configuration Cloudera CDH4, Name Node, Secondary Name Node, Job Tracker, Task Trackers and DataNodes.
  • Upgraded Production Hadoop cluster CDH 4.x to CDH 5.x alongside of OS upgrade from RHEL 6.2 to RHEL 6.4 with security (Kerberos) Enabled
  • Responsible for on-boarding new users to the hadoop cluster (adding user a home directory and providing access to the datasets).
  • Played responsible role for deciding the hardware configurations for the cluster along with other teams in the company.
  • Experience in writing the automatic scripts for monitoring the file systems.
  • Responsible for giving presentations about new ecosystems to be implemented in the cluster with the teams and managers.
  • Applying patches for cluster (eg. HIVE-1975).
  • Adding new Data Nodes when needed and running balancer.
  • Responsible for building scalable distributed data solutions using Hadoop.
  • Continuous monitoring and managing the Hadoop cluster through Ganglia and Nagios.
  • Installed Oozie workflow engine to run multiple Hive and Pig jobs, which run independently with time and data availability.
  • Done major and minor upgrades to the hadoop cluster.
  • Upgraded the Cloudera hadoop ecosystems in the cluster using Cloudera distribution packages.
  • Done stress and performance testing, benchmark for the cluster.
  • Commissioned and decommissioned the Data Nodes in the cluster in case of the problems.
  • Debug and solve the major issues with the help of Cloudera Support team.
  • Supported 100+ business users to use hadoop platform and resolving tickets and issues they run into and helping them to use best ways to achieve their results
  • Installed several projects on hadoop servers and configured each project to run jobs and scripts successfully.
  • Configured file-cleanup utilities for cluster maintanence.
  • Setting up Flume agents in order to handle multiple streaming data ingestion via setup box
  • Enabled HA for Namenode using quorum to avoid single point of failure
  • Developed scripts to monitor automation jobs and processes required for hadoop and setup mail service in case of failure.
  • Developed scripts and automated data management from end to end and updating b/w all the clusters
  • Installed and configured HBase on top of Hadoop
  • Implemented dynamic resource pooling for allocating resources according to the users requirement.
  • Build Kafka cluster for specific use cases and also worked on TSL/SSL configurations, topic creations and ACL definitions.

Hadoop Administrator

Confidential, Hillsboro OR

Environment: Hive, pig, MapReduce, and Cloudera Manager


  • Installed Hadoop on clustered environment
  • Upgraded the cluster from CDH2 to CDH3
  • The tasks were first performed on the staging platform, Before doing it on production cluster
  • Implemented Ganglia to Monitor the tool
  • Experience in file system Management
  • Provided day to day production support of our Hadoop infrastructure including new hardware
  • Infrastructure and application installation.
  • Managed backups for key data stores
  • Supported configuring, sizing, tuning and monitoring analytic clusters
  • Implemented security and regulatory compliance measures
  • Streamlined cluster scaling and configuration
  • Monitoring cluster job performance and involved capacity planning
  • Works with application teams to install operating system and Hadoop updates, patches, Version upgrades as required.
  • Documented technical designs and procedures

Systems Engineer

Confidential, St Louis, MO


  • Installing and maintaining the Linux servers.
  • Installed Cent OS using Pre-Execution environment boot and Kick start method on multiple servers
  • Verify the peripherals are working properly
  • Quickly arrange repair for hardware in occasion of hardware failure
  • Update system as soon as new version of OS and application software comes out
  • Setup securities for users and groups and firewall intrusion detection systems
  • Creating new users, Resetting user passwords, Lock/Unlock user accounts
  • Monitoring System Metrics and logs for any problems
  • Running cron-tab to back up data.
  • Involved in Adding, removing, or updating user account information, resetting passwords etc
  • Maintaining the RDBMS server and Authentication to required users for databases
  • Provided technical support for Level I-III issues via helpdesk and the telephone
  • Took Backup Confidential regular intervals and planned with a good disaster recovery plan
  • Documented and maintain server, network, and support documentation.

Systems Engineer



  • Installation and administration of RHEL 4.0/5.0 and SUSE 10.x.
  • Configured kickstart server and updating/applying patches to the servers using Red hat Satellite server.
  • Remote system administration using tools like SSH, Telnet, and Rlogin.
  • Planning and implementing system upgrades including hardware, operating system and periodical patch upgrades. Automation of jobs through crontab and AutoSys.
  • Installation of packages, patch management, volume management on Suse servers using YaST.
  • Applied appropriate support packages/patches to maintain system integrity.
  • Performed capacity analysis, monitored and controlled disk space usage on systems.
  • Monitored system activities and fine-tuned system parameters and configurations to optimize performance and
  • Ensure security of systems.
  • Adding servers to domain and managing the groups and user in AD, installing and configuring send mail.
  • Responsible for maintenance of development tools and utilities and to maintain shell, Perl automation Scripts.
  • Worked with project manager and auditing teams to implement PCI compliance.
  • Integrating Web logic 10.x and Apache 2.x and deploying EAR, WAR files in Web logic Application servers.
  • Designing Firewall rules for new servers to enable communication with application, Oracle 10g servers.
  • Fine tuning of Servers and configuring networks for optimum performance.
  • Setting up network environments using TCP/IP, NIS, NFS, DNS, SNMP agents, DHCP and Proxy.

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