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RAN-DBDEA-00167
Ranvier · DBDEA

Exam DBDEA Topics: troubleshooting Difficulty: easy

A company's nightly Lakeflow Job cluster failed to launch: the cluster event log shows a cloud provider error stating that no instances of the requested type are available in the selected availability zone. The same instance type launched fine last week, and the job must run reliably every night. How should the team mitigate this failure?

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  1. A. Reinstall the cluster's libraries from scratch, because a corrupted dependency can block node allocation
  2. B. Raise the auto-termination threshold so idle nodes remain available for the next night's launch
  3. C. Audit the init script's permissions, since capacity errors are always caused by failed init scripts
  4. D. Allow a mix of spot and on-demand instances, more availability zones, or alternate instance types
Reveal answer

Correct answer: Allow a mix of spot and on-demand instances, more availability zones, or alternate instance types

Reference: https://docs.databricks.com/aws/en/compute/configure

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✦ Consolidated Synthesis (Wiki) rev. #1 (baseline) · CC BY-SA 4.0
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Official Answer (D): Allow a mix of spot and on-demand instances, more availability zones, or alternate instance types

⚓ Official Documentation Anchor: https://docs.databricks.com/aws/en/compute/configure
Ranvier · DBDEA

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