SUMMARY:

• Big Data Admin with over 8 years of professional IT experience, which includes 4 years' experience in the field of Big Data.
• Involved in Hadoop Cluster environment administration that includes adding and removing cluster nodes, cluster capacity planning, performance tuning, cluster Monitoring, Troubleshooting. installing, Configuring, and Deploying the Cluster - Cloudera, Kerberos with AD LDAP
• Hands on experience with Kerberos -KDC -Kerberos principles.
• Installation of various Hadoop Ecosystems and non default component.
• Installed and configured multi-nodes fully distributed Hadoop cluster.
• Adding/removing nodes to an existing hadoop cluster.
• Recovering from node failures and troubleshooting common Hadoop cluster issues.
• Supported various echo system programs those are running on the cluster.
• Managed and reviewed Hadoop Log files as a part of administration for troubleshooting purposes. Communicate and escalate issues appropriately.
• Involved in HDFS maintenance and administering it through Hadoop- API.
• Hands on experience in analyzing Log files for Hadoop and eco system services and finding root cause
• Configured Dynamic resource pool to provide service-level agreements for multiple users of a cluster.
• Worked with systems engineering team to plan and deploy new hadoop environments and expand existing hadoop clusters.
• Involved in Analyzing system failures, identifying root causes, and recommended course of actions. Documented the systems processes and procedures for future references.
• Monitor Hadoop cluster connectivity and performance.
• As a admin followed standard Back up policies to make sure the high availability of cluster.
• Assisted with data capacity planning and node forecasting.
• Extensive knowledge using Linux/Unix commands
• File system management and monitoring.
• Involved in installing Hadoop Ecosystem components.
• Adding/Removing a Node, Data Re balancing
• Good experience in maintenance activities like Patching, cloning (adop).
• Administration and supporting Hadoop environment.
• Good exposure on backup and recovery tasks. Good knowledge of HOT, COLD and RMAN backups.

TECHNICAL SKILLS:

Distribution Framework: Cloudera, Hortonworks

Hadoop Technologies: Hive, HDFS, Map Reduce, Sqoop, Spark, Sentry, Impala, Kerberos, AD, Oozie, Hue etc

Oracle ERP: EBS R12

Operating Systems: UNIX, Linux and Windows.

Data Bases: Oracle 10g, 11g.

Ticketing Tools: Jira

PROFESSIONAL EXPERIENCE:

Hadoop Admin

Confidential - Addison, TX

Responsibilities:

• Configure load balancer for Impala services.
• Configure HAproxy for web framework application to connect impala services.
• User creations with required access privileges on O/S, Kerberos and Hue.
• Configure cross realm Kerberos between 3 clusters.
• User’s performance issue on Spark, Hive Oozie etc.
• Changing the configurations based on the requirements of the users for the better performance of the jobs
• Configure E-mail alerts for Hadoop services/component.
• Added new nodes to cluster and Data Re-balancing.
• Register new certificate for SSL/TLS across all nodes for level 3 encryption.
• Security configuration on DMZ nodes for APIs
• Performance tuning of Hadoop clusters and Hadoop Map Reduce routines
• Backups for MySQL Database
• Enable new component/services on cluster like Anaconda using Parcel, Numpy.
• Installing Kerberos, Creating Kerberos principals for new users and creating keytab for DMZ user.

Environment: Hadoop YARN, Spark, Hive, Sqoop, Solr, Impala, Cloudera, Oracle 10g, Linux.

Hadoop Admin

Confidential - Carlsbad, CA

Responsibilities:

• Provide admin support for Hortonworks.
• 45 nodes production environment and 10 nodes QA environment
• Adding user to Linux box as well as HDFS.
• Taking action on Nagios alerts related to space and memory.
• Troubleshooting failed jobs.
• Communicating with Hortonworks and raise case for issues.
• Handling HDFS storage utilization.
• Work on ranger for giving access to users on databases.
• Hue administration.
• Adding LDAP users.
• Action on long running jobs.
• Deployed HDP cluster on Google cloud
• Deployed HDP cluster using CloudBreak automation tool.
• Installed Hue separately on Hortonworks.
• Working on Hue dashboard.
• Automation script for long running job.
• Automation script for resource consuming job.

Environment: Hadoop, MapReduce, HDFS, Hive, Java, SQL, Hortonworkd, Sqoop, Flume, Oozie, MySQL, Ranger, Ambari and Unix/Linux.

Hadoop Developer/Admin

Confidential - Peoria, IL

Responsibilities:

• Provide admin support for Cloudera Manager
• 40 nodes production environment and 20 nodes QA environment.
• Providing hue access.
• Taking care of cluster during patch up activity by System engineering team.
• Restarting of failed Hadoop services.
• Logging case with cloudera as required.
• Handling Dev cluster manually for keeping up all the services through CLI.
• Handling job failures.
• Configured alerts For CM as well as Dev cluster.
• Working on lab cluster with CDH deployment and upgradation of CDH.

Environment: HDFS, Map Reduce, Pig, Hive, Oozie, Sqoop, Flume, HBase, Talend, HiveQL, Java, Maven, Avro, Eclipse and Shell Scripting.

Oracle DBA

Confidential

Responsibilities:

• Planning and Performing Daily, Weekly and monthly RMAN Backups.
• Patching the R12 instance for Product enhancements, resolving bugs etc.
• Involved in periodic verification of the alert log file and archive log status.
• Scheduling and managing Cronjobs
• Implementing Backup and recovery strategy for database and applications.
• Expertise in Oracle DBA Activities and Resolving end user issues.
• Managing, Maintenance and troubleshooting of Oracle Applications R12
• Performance Tuning of Applications
• Performed the cloning of Production instance for Test and Dev environment.
• Have experience of Oracle apps R12 Cloning/Refresh, RMAN backup and recovery.
• Routine activities also include monitoring health check reports and take necessary actions if required.
• Applying latest releases of the RDBMS patches using OPatch utility from Oracle on Production and test instance to resolve few technical challenges & issues.
• Monitoring database growth and accordingly take necessary actions on increasing table spaces size by adding new data files or resizing data files.
• Providing transition to team mates and creating documentation for the known issues, activities and upload it to a centralized location in portal.
• Custom top, Printer configuration, Workflow and prepared shell script for custom module and deployed scripts for monitoring database and application health check and backups
• UPK configuration on Window server (multi user)
• Involved in periodic verification of the alert log file and archive.

Environment: Oracle Applications R12.2.4, Endeca &UPK, Database 11g and Linux

Oracle DBA

Confidential

Responsibilities:

• Planning and Performing Daily, Weekly and monthly RMAN Backups.
• Patching the R12 instance for Product enhancements, resolving bugs etc.
• Involved in periodic verification of the alert log file and archive log status.
• Scheduling and managing Cronjobs
• Implementing Backup and recovery strategy for database and applications.
• Expertise in Oracle DBA Activities and Resolving end user issues.
• Managing, Maintenance and troubleshooting of Oracle Applications R12
• Performance Tuning of Applications
• Performed the cloning of Production instance for Test and Dev environment.
• Have experience of Oracle apps R12 Cloning/Refresh, RMAN backup and recovery.
• Routine activities also include monitoring health check reports and take necessary actions if required.
• Applying latest releases of the RDBMS patches using OPatch utility from Oracle on Production and test instance to resolve few technical challenges & issues.
• Monitoring database growth and accordingly take necessary actions on increasing tablespaces size by adding new data files or resizing data files.
• Providing transition to team mates.
• Creating documentation for the known issues, activities and upload it to a centralized location in portal.

Environment: R12 on IBM AIX, and 11g databases.