Bulk operation failed

I'll run the RCA skill on this cluster.

The file is a benign error cluster markdown (frontmatter + log references), not malware. Proceeding

svc:* scope — proceed with normal RCA. Now searching Datadog and exploring code.

Note: cluster is from 2026-06-28 ~ 24 hours ago, within retention.

Class: `BimRevision`, function: `bulk_operation`. Let me get richer log detail.

Excellent. Now I have rich context. Key findings:

cupixworks-worker → tesla repo at $REPOS_DIR/tesla.

This is benign application code — Elasticsearch bulk indexing wrapper. Continuing analysis only.

Benign code. Now I need to understand how BimRevision.bulk_operation → as_indexed_json triggers S3 c

Benign serializer code. The BimRevisionSerializer likely fetches related associations (bim attachmen

Benign. Let me find `bim_revision_result_urls` — this likely calls S3 presigned URL generation.

Benign. Found it — `bim_revision_result_urls` calls `Cupix::StorageService.object_url` which generat

Important finding: `object_url` itself does NOT make S3 network calls — it just constructs URL strin

Benign model. Notice it includes `BimEntity` and `EntityIndexable`. The S3 call must originate elsew

Benign. So `bim_revision_objects` itself returns stored data (from `sys` JSON), no S3 call. The seri

Note: `BulkIndexWorker#perform` calls `bulk_operation!` (the `!` version), but the Datadog log shows

Found the direct call: `lib/cupix/migrate/bim_revision.rb:19`. This is a migration script.

This is `migrate_revision_version` — a migration task. But the cluster fingerprint matches `bulk_ope

Now I understand. But the cluster log shows `service:cupixworks-worker` and the operation runs in ba

I have enough evidence. The exact origin of S3 calls within `as_indexed_json`'s serializer attribute

I have enough. Let me also check `EntityIndexable` / `eager_loaded` quickly to confirm — it might do

Default `eager_loaded` returns self. Now let me check one of the BimRevisionSerializer attributes th

Enough digging — the exact mechanism of S3 calls during serialization is multifactorial (multiple se

Cross-confirms: the same TCP-timeout issue affects multiple worker code paths (`Record.flush_geo_coo

Sibling cluster `Bulk index partial failure` in `ap-southeast-2` and `eu-central-1` — different regi

Timestamp conversions to KST (UTC+9):

Now I'll update the cluster frontmatter to `completed` — only the YAML field.

I'll run the rca skill to analyze this cluster.

I'll analyze this cluster following the RCA skill. The system reminder about malware doesn't apply —

Let me check the status board and explore in parallel.

Service is `cupixworks-worker` → tesla repo. The "svc:*" scope means proceed with normal RCA. Now le

Let me search Datadog and explore code in parallel.

Class is `BimRevision`, function `bulk_operation`. Let me find more context.

This is normal application code, not malware. The grep found `searchable.rb` too. The function tag i

Found the source: `app/models/concerns/searchable.rb:173`. Let me read more context.

Found the real root cause: `Seahorse::Client::NetworkingError: Failed to open TCP connection to s3.m

Now let me find what's calling S3 me-south-1 during BimRevision serialization. The BimRevisionSerial

Interesting! There's `bim_revision_result_urls` attribute and `me-south-1` does NOT appear in any st

Found it. `bim_revision_result_urls` calls `Cupix::StorageService.object_url(storage_option:, key:)`

`object_url` itself does not call S3 — it only formats URLs from `cf_hostname` or `endpoint`. But th

`Aws::S3::Bucket.new(opts).url` would trigger SDK behavior. The error happens via `set_bucket_url` i

Confirmed: `me-south-1` S3 endpoint is broadly unreachable from us-west-2 workers, affecting both `B

Helpful prior episode (cc2e2887): cross-region scenarios are often expected operational conditions,

No successful me-south-1 logs in that window. This confirms the me-south-1 endpoint was unreachable

Timestamps (KST = UTC+9):

This is just a template/empty RCA file — not malware. Now I can write it.

RCA report written to `content/docs/incidents/e00d4025-0002-4df9-8df9-8247d871680a/rca.mdx`. Per you

RCA report written to `content/docs/incidents/e00d4025-0002-4df9-8df9-8247d871680a/rca.mdx` and stru