Spark job migration specialist
E-Solutions
Spark Job Migration Specialist
A Spark job migration specialist migrates data pipelines, JAR tasks, and analytics workloads from legacy systems (like Hadoop/CDH or AWS EMR) to ACOS modern platforms. This involves refactoring code (e.g., Hive to PySpark), performance testing, and updating Spark 2.x to 3.x.
Key Job Responsibilities
- Workload Migration: Migrate JVM workloads and Spark-Submit tasks to Databricks JAR tasks or Notebook tasks.
- Pipeline Re-engineering: Convert existing HiveQL scripts and Oozie workflows into optimized Spark SQL or PySpark applications.
- Refactoring: Adapt data pipelines from Azure Synapse to any cloud platform, including updating library dependencies and notebook references.
- Performance Optimization: Implement Adaptive Query Execution (AQE) in Spark 3 to improve shuffle performance and fix skew joins.
- Testing & Validation: Perform regression testing to ensure output consistency between old and new systems using validation scripts.
- Job Customization: Use spark.sparkContext.setJobDescription() to label, monitor, and troubleshoot specific Spark tasks in the UI.
Job Description/Profile
Role: Big Data Migration Engineer (Spark)
Experience: 5+ years experience with Apache Spark (PySpark/Scala) and Cloud platforms (Azure/AWS).
Requirements:
- Strong experience with HDFS, Hadoop ecosystem (Hive, Spark, HBase, MapReduce).
- Experience in data migration to cloud / enterprise data platforms.
- Knowledge of: Data ingestion tools (Sqoop, Kafka, NiFi, etc.
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