which service to choose : hive metastore on cloud sql or on metastore service

[joarodrigues]

Hi 

When we are using a dataproc cluster that needs a hive metastore,

what benefits we have using the metastsore service in dataproc whitch costs 3$/hour

instead of an small instance of mysql that hosts the mysql hive metastore  database but only costs  0.72$ / day ? 

Thanks 

[ms4446 · Accepted solution]

Here are the benefits of Using Dataproc Metastore Service Over a Self-Managed MySQL Instance for Hive Metastore:

1. Managed Service with Simplified Maintenance:

   • No Infrastructure Management: Dataproc Metastore is a fully managed service, eliminating the need to provision, configure, or manage MySQL instances or the underlying infrastructure. This saves significant time, effort, and operational overhead.
   • Automatic Updates and Backups: The service handles software updates, security patches, and regular backups automatically, reducing maintenance tasks and ensuring data protection.
   • High Availability and Resilience: Designed for high availability, Dataproc Metastore replicates data and has built-in failover mechanisms, minimizing downtime and data loss risks.
   • Expertise: Benefit from Google's expertise in managing large-scale infrastructure for a more robust and reliable service.

2. Performance and Scalability:

   • Optimized for Big Data Workloads: Specifically built to handle the demands of large-scale, big data environments, offering better optimization for Hive workloads than a generic MySQL instance.
   • Flexible Scaling: Scales up or down to match processing needs without the concerns of over-provisioning or under-provisioning a standalone MySQL instance.
   • Resource Optimization: More efficient in resource utilization, crucial in big data environments.

3. Integration with Dataproc and Cloud Ecosystem:

   • Unified Metadata Access: Integrates seamlessly with Dataproc clusters and other Google Cloud tools, enabling centralized and consistent metadata management.
   • Cloud-Native Features: Leverages Cloud Storage for data and integrates with other cloud services like security and monitoring.
   • Data Consistency: Ensures consistent metadata management across services, reducing data silos and integration complexities.

4. Security and Compliance:

   • Managed Security: Benefits from Google Cloud's security infrastructure and practices, including security updates, encryptions, and potential compliance requirements.
   • Compliance Standards: Often complies with various industry standards, crucial for businesses with specific regulatory requirements.

5. Cost Considerations:

   • Total Cost of Ownership (TCO): Consider hidden costs with a self-managed MySQL instance, such as administration, potential downtime, scaling costs, and security compliance.
   • Operational Efficiency: The benefits of Dataproc Metastore can translate to long-term savings by reducing management overhead and freeing up your team for core tasks.
   • Predictable Billing: Managed services often provide more predictable billing for easier budget planning.
   • Economies of Scale: Leveraging Google Cloud's infrastructure can offer cost benefits at scale.

When to Consider a Self-Managed MySQL Instance:

• Very Specific Customization Needs: If advanced requirements or unique customizations are not met by Dataproc Metastore.
• Strict Cost Constraints in Small Deployments: For extremely small metastore sizes and usage where cost is the primary concern. However, weigh this against the TCO and operational tradeoffs.
• Technical Expertise: Organizations with strong technical teams might prefer the control offered by a self-managed solution.
• Legacy Systems Integration: Necessary for better compatibility with existing infrastructure or specific legacy systems.