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Moving from Cloudera to Databricks
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Data Platforms
10/22/2025
14 min read

Moving from Cloudera to Databricks

Ever feel like your data platform is holding you back instead of pushing you forward? Here's the story of how one company broke free from legacy constraints.

Vasanth Marudhai

Co-Founder of StarX Technologies, guiding enterprises through complex data transformations with empathy and expertise.

Let me tell you about a conversation I had last year with a Senior Director at a major MedTech company. We were grabbing coffee, and he was frustrated—the kind of frustrated that comes from knowing your team is capable of amazing things but feeling handcuffed by your technology.

"We have all this data," he told me. "Valuable data. But by the time we can actually do something with it, the moment has passed. Our competitors are moving faster. Our stakeholders are asking questions we should be able to answer in minutes, not days."

He was talking about their Cloudera platform. And if you've ever worked with legacy on-premises data systems, you know exactly what he meant.

When Your Data Platform Becomes Your Biggest Bottleneck

Here's the thing about Cloudera—it wasn't always the "old" technology. A few years ago, it was the go-to solution for big data. Companies invested millions in hardware, licensing, and building expertise around it. It solved real problems.

But then the world changed. Cloud computing matured. AI and machine learning went from "nice to have" to "table stakes." Data volumes exploded. And suddenly, that once-cutting-edge Cloudera cluster started feeling more like an anchor than a rocket ship.

For this MedTech division, the pain points were becoming impossible to ignore:

The Scalability Wall

Every time the business wanted to launch a new analytics use case, it turned into a months-long ordeal. "Do we have enough capacity?" "Can the hardware handle it?" "What's the budget for new nodes?" Meanwhile, the business opportunity—the reason they wanted the analytics in the first place—was slipping away.

It's like wanting to add another room to your house but realizing you'd need to reinforce the entire foundation first. Possible? Sure. Worth it? That's the question.

Data Silos Everywhere

Different teams had built their own mini-kingdoms of data. Marketing had their stack. Operations had theirs. Product had another. Each group was doing their best, but when you needed to connect the dots across departments? Good luck.

One analyst told me she spent more time trying to figure out where data lived and how to access it than actually analyzing it. That's not a job—that's a treasure hunt nobody signed up for.

The Speed Problem

Data processing jobs that should take minutes were taking hours. Some that should take hours were taking overnight. And this wasn't just an inconvenience—it meant the data insights were stale by the time anyone saw them.

In healthcare technology, where patient outcomes and operational efficiency matter deeply, "yesterday's data" isn't just slower—it can mean missed opportunities to improve care.

Reports That Belonged in a Museum

The analytics team was brilliant. But they were working with tools and processes from another era. Static reports. Manual refreshes. Data that was already out of date when the report hit someone's inbox.

It's like asking a Formula 1 driver to race in a vintage car. Sure, they'll do their best, but you're not going to win any races.

The Decision: Stay or Go?

Here's where it gets interesting. Because the easy thing—the comfortable thing—would have been to just throw more hardware at the problem. Upgrade the Cloudera cluster. Add more nodes. Keep patching and praying.

But this team made a braver choice. They decided to migrate to Databricks.

Now, if you've never led a major data platform migration, let me tell you: it's terrifying. You're talking about moving the foundation while the house is still standing. Fifty-eight transformation jobs. Critical business processes. Stakeholders who don't care about your technical challenges—they just need their reports on time.

One wrong move, and you're not just dealing with downtime. You're dealing with broken trust, lost revenue, and a resume-updating event.

So how did they do it?

The Migration: How to Move a Mountain (One Stone at a Time)

Step 1: Don't Boil the Ocean

The first smart move? They didn't try to migrate everything at once. Instead, they started with a pilot—just 10 transformation jobs. Think of it as a dress rehearsal before opening night.

This pilot wasn't just about technical validation (though that was important). It was about building confidence. Proving to stakeholders that yes, this can work. Proving to the team that they could pull this off. And critically, learning what they didn't know they didn't know.

Every migration reveals surprises. Better to find them with 10 jobs than with all 58.

Step 2: Map the Territory

Before migrating anything, they did a deep dive into their existing architecture. What jobs do we have? What do they do? How are they connected? Where are the dependencies?

This sounds obvious, but you'd be surprised how many organizations don't actually have a complete picture of their data infrastructure. People leave. Knowledge walks out the door. That "temporary" fix from three years ago is now a critical component nobody fully understands.

Taking the time to document everything—even the messy parts—was crucial. It's like making a map before you start a journey into unknown territory.

Step 3: Convert, Test, Compare, Repeat

For each Cloudera job, the migration process looked like this:

  • Convert: Translate the Cloudera scripts to work in Databricks
  • Sanity check: Does it run without errors?
  • Compare: Does the output match what Cloudera produced?
  • Validate: Does it perform better?

That comparison step is critical. You're not just moving code—you're ensuring business continuity. If Report X showed revenue of $1.2M in Cloudera, it better show $1.2M in Databricks (assuming the same input data). Any discrepancy needs to be investigated until you understand exactly why.

Step 4: Communication, Communication, Communication

Technical excellence alone doesn't make migrations successful. People do. And people need to be informed, involved, and reassured.

The team maintained transparent communication throughout. Regular updates. Clear timelines. Honest about challenges. When something went wrong (and things always go wrong), they explained what happened and how they were fixing it.

This transparency built trust. And trust is what keeps stakeholders patient when you hit inevitable bumps in the road.

The Results: When Everything Clicks

The migration took less than three months. Fifty-eight transformation jobs successfully moved from Cloudera to Databricks. On time. Within budget. Without major business disruption.

But here's where the story gets really good—because the results went beyond "we successfully migrated." The new platform fundamentally changed what was possible:

The Silos Vanished

Remember those data kingdoms I mentioned? Gone. Databricks became the central hub where all data lived and could be accessed. Marketing, operations, product—everyone working from the same source of truth.

Suddenly, cross-functional questions that used to take weeks of data wrangling could be answered in hours. The analysts who spent their time on treasure hunts? They were now doing actual analysis. You know, the job they were hired to do.

Scalability Became Trivial

Want to launch a new analytics use case? No problem. No hardware to purchase. No capacity planning meetings. No six-month procurement process.

Just spin up the compute you need, do the analysis, scale down when you're done. Pay for what you use. The business could move at the speed of ideas, not at the speed of infrastructure provisioning.

Speed Went Through the Roof

Those jobs that used to take hours? Now taking minutes. Overnight batch processes? Running in a fraction of the time. And this wasn't just about faster technology—it was about better architecture, optimized for cloud-native workloads.

But speed isn't just about faster processing. It's about faster insights. Faster decisions. Faster time-to-value. In a competitive market, that speed is everything.

Near Real-Time Became Reality

The reporting capabilities transformed from "here's what happened yesterday" to "here's what's happening right now." Stakeholders could make decisions based on current data, not historical snapshots.

In healthcare technology, this matters. A lot. Being able to spot trends as they emerge, identify issues before they become crises, optimize operations in real-time—that's not just better analytics. That's better patient care.

The TCO Story

Total Cost of Ownership—the number that makes CFOs pay attention. And the results here were compelling.

No more hardware to maintain. No more on-premises data center costs. No more paying for capacity you might need someday. Pay for what you use, scale up when you need it, scale down when you don't.

But beyond the direct costs, think about the hidden savings: fewer people spending time on infrastructure management, faster time-to-market for new capabilities, better utilization of your data science talent.

The Human Side: What Made It Work

You know what stuck with me most about this project? It wasn't the technical architecture or the performance benchmarks (though those were impressive). It was the testimonial from the Senior Director when it was all done:

"I am delighted to announce the successful completion of the Cloudera Migration to Databricks. A special thank you goes out to the Team, for their dedication and expertise. Their role was pivotal in ensuring smooth communication and cooperation throughout the project... Thank you all for your hard work, dedication, and contributions to making this project a success."

Notice what he emphasized? Not the technology. Not the cost savings. The people. The communication. The collaboration.

Because here's what I've learned after years of working on data transformation projects: the technology is usually the easy part. The hard part is getting everyone aligned, keeping them aligned, managing expectations, navigating politics, and maintaining trust when things get tough.

This project succeeded because the team understood that a data migration isn't just a technical project—it's an organizational change management initiative that happens to involve technology.

Should You Make the Jump?

Okay, so maybe you're reading this and thinking about your own Cloudera platform (or whatever legacy system is currently making your life difficult). Should you migrate?

Here's my honest take: it depends. I know, I know—classic consultant answer. But hear me out.

You Might Be Ready If...

  • Scalability is limiting growth: Your data platform can't keep up with business demand
  • TCO is climbing: You're spending more on maintenance than innovation
  • Data silos are causing problems: Different teams can't easily share or access data
  • Talent is hard to find: It's getting harder to hire people who want to work with legacy tech
  • Your current system can't support AI/ML: Modern analytics workloads are difficult or impossible
  • You're already cloud-first: Most of your infrastructure has moved to the cloud anyway

You Might Want to Wait If...

  • Your current system works fine: If it's not broken, don't fix it (seriously)
  • You're facing other major changes: Don't stack too many transformations at once
  • Budget is extremely tight: Migrations cost money upfront, even if TCO improves long-term
  • Your team isn't ready: If your people are overwhelmed or understaffed, timing matters

Lessons from the Trenches

If you do decide to make the leap, here are the things I've seen make the difference between success and struggle:

1. Start with Why

Be crystal clear on why you're migrating. "Because Databricks is cool" is not a reason. "Because we need to reduce time-to-insight from days to hours to support critical business decisions" is a reason.

That clear "why" will guide every decision and keep everyone focused when things get hard.

2. Get Executive Sponsorship

This cannot be just an IT project. You need business leaders who understand the value and will champion it when budgets get reviewed or priorities shift.

3. Pilot Everything

Never go big bang. Always pilot. Always validate. Always learn before scaling.

4. Invest in Your People

Your team needs training. They need time to learn new tools. They need support. Budget for this. It's not optional.

5. Plan for the Unexpected

Something will go wrong. Budget will get tight. A key person will leave. A critical dependency will emerge at the worst possible time. Build slack into your timeline and budget.

6. Communicate Relentlessly

Over-communicate. Then communicate some more. Status updates, win celebrations, problem disclosures—keep everyone informed.

The Bigger Picture

Here's what this story is really about: it's not just about migrating from Cloudera to Databricks. It's about organizations realizing that their data infrastructure is either enabling their strategy or limiting it.

Ten years ago, just having a big data platform was a competitive advantage. Today, everyone has data. The advantage comes from what you can do with it—and how fast you can do it.

The companies winning in their industries right now are the ones who can:

  • Turn data into insights faster than competitors
  • Deploy AI/ML at scale, not just in pilot projects
  • Adapt quickly when market conditions change
  • Empower every team to be data-driven, not just the data team

Legacy platforms can't deliver that. Not because they're bad (they're not), but because they weren't designed for this new reality.

Your Move

So here we are. You've read about one company's journey from Cloudera to Databricks. Maybe it resonates. Maybe you're facing similar challenges. Maybe you're already planning your own migration.

Whatever stage you're at, remember this: technology transformations aren't really about technology. They're about what you want to achieve for your business and your customers. The tech is just the tool.

That MedTech company didn't migrate to Databricks because they love data engineering (though some of them probably do). They migrated because they wanted to serve patients better, operate more efficiently, and move faster than their competition.

The platform was just the enabler.

What are you trying to enable? What's your data platform preventing you from doing? What could you achieve if you weren't held back by legacy constraints?

Those are the questions worth answering. And once you know those answers, the path forward usually becomes pretty clear.


Thinking about modernizing your data platform? We've helped companies migrate from legacy systems to modern cloud-native architectures. Let's talk about what's possible for your organization—and how to make the journey as smooth as possible.

Tags

ClouderaDatabricksData MigrationCloud MigrationData Platform Modernization

About Vasanth Marudhai

Co-Founder of StarX Technologies, guiding enterprises through complex data transformations with empathy and expertise.

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