SUMMARY

• 4 years of IT experience including 2 years of experience with Hadoop Ecosystem in installation and configuration of different Hadoop eco - system components in the existing cluster.
• Experience in managing the multi-node development, testing and production Hadoop cluster with different Hadoop components (HIVE, Spark, SQOOP, OOZIE, KERBEROS, RANGER, KNOX, HBASE, ZOOKEEPER) using Apache Ambari.
• Experience on Horton works.
• Strong knowledge on Hadoop HDFS architecture and Map-Reduce framework.
• Experience in improving the Hadoop cluster performance by considering the OS kernel, Storage, Networking, Hadoop HDFS and Map-Reduce by setting appropriate configuration parameters.
• Experience in administering the Linux systems to manage Hadoop cluster and monitoring the cluster using Ambari.
• Knowledge in upgrading Hadoop cluster from current version to minor version upgrade as well as to major versions.
• Experience in using Zookeeper for coordinating the distributed applications.
• Experience in managing Hadoop infrastructure like commissioning, decommissioning, log rotation, rack topology implementation.
• Experience in managing the cluster resources by implementing fair and capacity scheduler.
• Experience in scheduling jobs using OOZIE workflow.
• Scheduling jobs using crontab.
• Strong knowledge in configuring Name Node High Availability.
• Experience in configuring Hadoop Security (Ranger and Knox gateway).
• Experience in handling multiple relational databases: MySQL, SQL Server.
• Assisted Developers with problem resolution.
• Ability to play a key role in the team and communicates across the team.
• Global Service Delivery experience by bringing together resources to accomplish organizational goals using ITIL framework.
• Effective problem solving skills and outstanding interpersonal skills. Ability to work independently as well as within a team environment. Driven to meet deadlines. Ability to learn and use new technologies quickly.
• Setting up automated 24x7 monitoring and escalation infrastructure for Hadoop cluster using Ambari
• Experienced in Linux Administration and TSM Administration.
• As an Information Security Advisor working on the Single Identity Project, I manage the migration schedule and communications with key stakeholders for implementation of Centrify Direct Control agent onto all existing or new assets.
• In addition, I also work as a key team member in the technical management of the Centrify Suite for over 6000 servers and maintain a strong working relationship with our vendor, Centrify.
• During my time in this position I have created a stronger working relationship between the Single Identity team, other Confidential support organizations, and the IBM service provider to bring a unified approach to resolving issues that arise within the environment.
• In addition to standard implementations, I also work with the stakeholders for non-standard implementations by gathering requirements to meet the needs of complex platforms such as EXADATA/Teradata/Exalitycs servers that do not follow standard OS/application configuration.

TECHNICAL SKILLS

Hadoop Ecosystems: HDFS, Hive, Sqoop, Spark, Zookeeper, HBase, Oozie, Kerberos, Ranger, Knox

Operating System: Windows, Linux, AIX, UNIX

RDBMS: MYSQL, Oracle 10g/11g, DB2, MSSQL SERVER

Languages: C, C++, Java, Bash shell scripting, SQL

Other Tools: Service Now, VPN, Win SCP, Putty, Edit++ and Notepad++

Directories: Active Directory

PROFESSIONAL EXPERIENCE

Confidential, MA

Hadoop Administrator/ORACLE DBA

Responsibilities:

• Monitoring Hadoop Ambari cluster and jobs
• Troubleshooting failed jobs, Performance Tuning, Automation using shell script
• Worked on different Hadoop eco system tools like HDFS, YARN, Hive, Spark and HBase.
• File system management and monitoring
• Provided Hadoop, OS, Hardware optimizations.
• Involved in testing HDFS, Hive, Pig and Map Reduce access for the new users.
• Cluster maintenance as well as creation and removal of nodes using Apache Ambari
• Configured Oozie for workflow automation and coordination.
• Implemented rack aware topology on the Hadoop cluster.
• Rebalancing the Hadoop Cluster.
• Allocating the name and space Quotas to the users in case of space problems.
• Installed and configured Hadoop security tools Knox, Ranger and enabled Kerberos
• Managing cluster performance issues.
• Creating snapshots and restoring snapshots.
• Backed up data on regular basis to a remote cluster using DistCp.
• Regular Commissioning and Decommissioning of nodes depending upon the amount of data.
• Handle the upgrades and Patch updates.
• Perform Oracle database administration tasks include configuration management, backup/recovery, performance optimization, and space management
• Provide development and design assistance to development and other application support teams
• Working with Project Managers to identify and manage risks, issues and opportunities for the system/s, including the development of contingency plans
• Ensure system integrity, efficiency and performance through management of core system resources (CPU/Memory/IO Performance)
• Following the problem management, change management and service management processes
• Assess and perform systems utilization and headroom reports to assist in troubleshooting and performance tuning
• Evaluate and manage existing software and licensing configurations, systems and the design, implementation and management of new/improved systems

Environment: : Hortonworks (HDP 2.4), Ambari 2.4, HDFS, Java, Shell Scripting, Hive, Spark, Sqoop, Linux, SQL, Zookeeper, AWS, HBase, Oozie, Kerberos, Ranger

Confidential

SYSTEM ANALYST

Responsibilities:

• Experience in installation and configuration of Centrify client on all the database servers.
• Scheduling the database servers every week to get them centrified.
• Migrating the local users to active directory.
• Troubleshooting the user login issues after moving to active directory.
• Configuring LDAP and Kerberos authentication settings to sync with the Centrify client installed on the servers.
• Installed Centrify client on all the database servers like oracle, db2, Sybase and mongo DB.
• Worked with the installations in all the environments production, development and UAT.
• Managing the active directory and make sure the servers are sent in to correct Organizational Units (OU) Linux, Unix.
• Enhanced productivity with remote access via OpenSSH, PuTTY, Kerberized Telnet and FTP.
• Active Directory-based integration solutions for authentication, single sign-on, remote access and file-sharing.
• Managing computer roles and login roles in the access manager.
• Upgrading Centrify client on all the servers and SSH files that keep sync with the upgraded client.
• Coordinating with the off shore teams at the time of migrations to support from OS level and the database level.
• Checking the server configuration and the space availability before installing the Centrify client.
• Supported the on-call rotation to be available 24/7.
• Checking the open issues in the servers by analyzing the servers adding to Access manager and run some inbuilt scripts on them and for open issues creating the Incidents in Service Now.
• Having experience in creating the change requests in service now and attending the cab meetings to get the changes approved.