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When migrating a large Hadoop cluster to a cloud-native environment with minimal downtime, which strategy is most effective?

hard📝 Application Q8 of 15
Hadoop - Modern Data Architecture with Hadoop
When migrating a large Hadoop cluster to a cloud-native environment with minimal downtime, which strategy is most effective?
APerform a full cluster shutdown and bulk data transfer to cloud storage before restarting jobs
BImplement a hybrid approach using data replication with Apache NiFi and gradual cutover to cloud services
CMigrate only metadata first, then manually copy data after migration completes
DUse a single batch job to move all data at once during a scheduled maintenance window
Step-by-Step Solution
Solution:

  1. Step 1: Understand downtime minimization

    Minimizing downtime requires continuous data availability and synchronization during migration.

  2. Step 2: Evaluate migration strategies

    Hybrid approaches with data replication tools like Apache NiFi allow incremental data sync and gradual cutover.

  3. Final Answer:

    Implement a hybrid approach using data replication with Apache NiFi and gradual cutover to cloud services provides a practical method to migrate large clusters with minimal downtime by replicating data and switching workloads gradually.

  4. Quick Check:

    Hybrid replication enables minimal downtime migration [OK]
Quick Trick: Use data replication and gradual cutover for minimal downtime [OK]
Common Mistakes:
  • Shutting down cluster causing extended downtime
  • Migrating metadata without syncing data
  • Bulk data transfer causing long service interruptions

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