Migrating and running Apache Oozie workflows on Amazon EMR
Apache Oozie is a popular workflow scheduler for Hadoop ecosystems, orchestrating complex data processing tasks and dependencies. When migrating from your on-premises Hadoop cluster to Amazon EMR, you can seamlessly continue using Oozie or explore alternative AWS services for workflow orchestration.
If your migration strategy is “lift and shift” and your ETL scripts are set up to interact with HDFS for both input and output, then your existing scripts – including those for Hive, EMR, and Spark – should operate effectively in EMR without significant modifications. However, if you’ve chosen to re-architect your system during the move to AWS and switch to using Amazon S3 as your persistent storage layer instead of HDFS, you’ll need to update your scripts. They must be adapted to work with Amazon S3 (using the s3://
protocol) via Elastic MapReduce File System (EMRFS).
In addition...