Idle EMR Cluster
An EMR cluster bills for every node for as long as it runs, and a cluster between jobs is paying full rate for a workload that ended.
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AWS
Found, explained, handed over.
Findings with a dollar figure attached, idle, oversized, orphaned, unscheduled and undiscounted spend.
Detect
ZopNight checks this automatically across AWS, with read-only access to the account.
Explain
Every finding says exactly what to change: Schedule the idle EMR cluster off-hours. Where the saving can be proven it is priced; where it cannot, the finding says so.
Fix
The finding opens with the fix already written out, step by step, so it is one ticket, not an investigation.
- Applies to
- EMR Clusters on AWS
- The fix, by hand
- Enable an EMR auto-termination idle timeout so the cluster stops automatically after no active steps.
- Or apply the recommended off-hours start/stop schedule.
- Prefer transient clusters (auto-terminate after the job) for batch workloads.
- Only terminate the cluster manually after confirming it is permanently abandoned.
These are the steps the finding carries in the product.
- Category
- Scheduling. Resources running 24x7 with a clear off-hours usage pattern, ready for start and stop scheduling.
- Where it appears
- The Savings tab of Recommendations, with every affected resource listed.
- Rule ID
RC-051- Full reference
Related checks
See the always-on resources in your account.
Connect a read-only role and the first pass runs on your own estate. This check, and the rest of the catalogue, with it.
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- $30M+annualised cloud spend under management
- 550K+resources tracked since launch
- 20-60%off the bill in the first month
- SOC 2Type II report, plus ISO 27001
Figures published on zop.dev.