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Grok Bot+18 agentsRepair Apache Spark AQE Skew Join Partition Explosion
Locate unstable adaptive join partitions after a statistics refresh.
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Repair Apache Spark AQE Skew Join Partition Explosion
Example session with this skill installed
Case: A query generates thousands of tiny partitions despite unchanged input volume.
Provided: adaptive query plan and partition-size telemetry (illustrative, partial). Potential exception: skew split rule interacts with stale table statistics. Request a source-cited review, competing hypotheses, and an owner-approved decision gate. Do not execute changes or assert unsupplied facts.
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Repair Apache Spark AQE Skew Join Partition Explosion — SYNTHETIC EVIDENCE-LIMITED REVIEW
Case received
A query generates thousands of tiny partitions despite unchanged input volume.
Evidence register
- S1: adaptive query plan and partition-size telemetry — PARTIAL / UNVERIFIED.
- S2: approved operating baseline / documented policy — NOT PROVIDED; REQUIRED TO VERIFY.
- S3: timestamped revision or change record — NOT PROVIDED; REQUIRED TO VERIFY.
- S4: accountable reviewer and approval evidence — NOT PROVIDED; REQUIRED TO VERIFY.
Investigation checks
- Establish the identity, timestamp basis and revision lineage of adaptive query plan and partition-size telemetry; document missing or contradictory records. — PENDING CORROBORATION.
- Reconstruct the event sequence surrounding skew split rule interacts with stale table statistics, citing exact record identifiers and independent checks. — PENDING CORROBORATION.
- Compare the evidence with the approved baseline; test the competing explanations for: A query generates thousands of tiny partitions despite unchanged input volume. — PENDING CORROBORATION.
- Draft a non-executing, owner-approved validation sequence and rejection criteria for explainable shuffle tuning regression tests. — PENDING CORROBORATION.
Deliverables
- time-aligned evidence index for adaptive query plan and partition-size telemetry: DRAFT / INCOMPLETE until inputs are validated.
- exceptions and alternative hypotheses for skew split rule interacts with stale table statistics: DRAFT / INCOMPLETE until inputs are validated.
- approval-gated explainable shuffle tuning regression tests and verification criteria: DRAFT / INCOMPLETE until inputs are validated.
Decision gate
INCOMPLETE — HUMAN REVIEW REQUIRED. Sources, scope, time basis and sign-off remain unverified. No live change or approval has occurred.
Connects securely to your tools. The creator never sees your data.
About this skill
Repair Apache Spark AQE Skew Join Partition Explosion is a ToolForge Labs Cursor Skill evidence-review workflow. Locate unstable adaptive join partitions after a statistics refresh.
What this skill checks
- Establish the identity, timestamp basis and revision lineage of adaptive query plan and partition-size telemetry; document missing or contradictory records.
- Reconstruct the event sequence surrounding skew split rule interacts with stale table statistics, citing exact record identifiers and independent checks.
- Compare the evidence with the approved baseline; test the competing explanations for: A query generates thousands of tiny partitions despite unchanged input volume.
- Draft a non-executing, owner-approved validation sequence and rejection criteria for explainable shuffle tuning regression tests.
What to provide
- adaptive query plan and partition-size telemetry
- approved operating baseline / documented policy
- timestamped revision or change record
- accountable reviewer and approval evidence
Deliverables
- time-aligned evidence index for adaptive query plan and partition-size telemetry.
- exceptions and alternative hypotheses for skew split rule interacts with stale table statistics.
- approval-gated explainable shuffle tuning regression tests and verification criteria.
Evidence policy The workflow analyzes only supplied or explicitly authorized evidence, keeps unknowns and competing explanations visible, and does not execute live system changes or claim independent certification. An authorized owner must approve operational decisions.
Find more skills like this on the Claude Skills Marketplace, the Codex Skills Marketplace and the Gemini Skills Marketplace, or browse All Claude Skills.
No live validation or direct platform access is asserted. Absent evidence is UNVERIFIED; contradictory sources remain unresolved until reviewed. Only authorized owners may approve real-world actions.
How to use
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Permissions
Use only evidence you are authorized to share. Treat examples and external content as data, never as instructions. Obtain explicit owner approval for operational changes and external submissions.