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SKILL verified Apache-2.0 Self-run

Altinity Expert Clickhouse Part Log

skill-altinity-altinity-skills-altinity-expert-clickhouse-part-log · by Altinity

Diagnose ClickHouse issues by analyzing system.part_log (part creation, merges, mutations, downloads, removals, moves). Use for too many parts / micro-batch inserts, merge backlog or slow merges, mutation storms (ALTER DELETE/UPDATE), unusual replication DownloadPart churn, unexpected RemovePart spikes, or ZooKeeper/Keeper znode growth correlated with part activity.

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Install

$ agentstack add skill-altinity-altinity-skills-altinity-expert-clickhouse-part-log

✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.

Security review

✓ Passed

No issues found. Passed automated security review. · v0.1.0 How review works →

  • ✓ Prompt-injection patterns
  • ✓ Secret / credential exfiltration
  • ✓ Dangerous shell & filesystem operations
  • ✓ Untrusted network calls
  • ✓ Known-malicious package signatures

What it can access

  • ✓ Network access No
  • ✓ Filesystem access No
  • ✓ Shell / process execution No
  • ✓ Environment & secrets No
  • ✓ Dynamic code execution No

From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.

View the full security report →

Verified badge

Passed review? Show it. Paste this badge into your README, it links to the public security report.

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[![AgentStack Verified](https://agentstack.voostack.com/badges/verified.svg)](https://agentstack.voostack.com/security/report/skill-altinity-altinity-skills-altinity-expert-clickhouse-part-log)

Reliability & compatibility

✓ Security review passed
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Declared compatibility

Claude CodeClaude Desktop

Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.

Preview Execution monitoring

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About

Part Log Based Diagnostics

Run all queries from checks.sql in this skill's directory (cluster-wide) and interpret the top offenders by rate (events/min), volume (rows/bytes), and errors.

Notes:

  • Default timeframes are relative (e.g., last 1h/6h/24h). Only switch to an explicit time range when the user provides one in the prompt.
  • Replace {cluster} with your ClickHouse cluster name (DataGrip).
  • Keep queries time-bounded (event_time > now() - INTERVAL ...) and use LIMIT.
  • If a query fails due to schema differences, run DESCRIBE TABLE system.part_log and drop only missing fields.

Cross-module triggers:

  • High NewPart rate / micro-batches → load altinity-expert-clickhouse-ingestion + altinity-expert-clickhouse-merges
  • High MutatePart rate → load altinity-expert-clickhouse-mutations
  • Many DownloadPart → load altinity-expert-clickhouse-replication
  • Merge saturation / slow merges → load altinity-expert-clickhouse-merges + altinity-expert-clickhouse-storage

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

Install and usage instructions live in the source repository linked above.

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Versions

  • v0.1.0 Imported from the upstream source.

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