Batch rasterization: manifests, resume checkpoints, and per-row reruns prove success better than “the folder looks full”
`batch-vsdx-jpg` rasterizes entire libraries of .vsdx into uniform JPGs. Risks include silent per-file failures, clobbered outputs with duplicate names, or inability to rerun one row without rewashing the whole batch. Freeze a manifest: source path, page index, quality, output URI, status code, byte size, and hash; throttle giant pages or heavy embeds separately. Nightly reconcile successful rows vs object counts—any gap must close under a ticket.
Batch playbook: golden and corrupt samples set DPI/quality, fix concurrency, then checkpoint manifests for resume and targeted compensation
- Sample the nastiest and a few corrupt .vsdx files to validate default DPI and quality; data owners sign off manifest column names and naming rules—no ad-hoc CSV headers per team.
- Persist manifest slices and failure lists every N rows in production; output paths include repo name and path hash; spot-check JPGs with scripts for suspiciously tiny files or flat gray frames and halt the job on systematic drift.
- Archive the manifest’s own hash plus a read-only bucket snapshot; when rerunning failures, skip rows marked manual_override unless a forcing ticket exists so you do not overwrite legal-approved public previews.
VSDX to JPG (batch) FAQ: manifests, resume, name collisions, bad buckets, abnormal file-size detection
Logs claim success but object count is below source count—which manifest columns should we audit before blaming random jitter?
Inspect per-row status, skip reasons, and whether output URIs are empty—common causes are path encoding, read locks, or mid-run human deletes, not flaky engines.
Multiple branches write the same output prefix so git commits no longer match hashes—how do we forensically prove a build and which manifest fields are mandatory?
Manifests must record commit SHA, source checksums, and artifact hashes; forbid an unversioned latest/ prefix as the sole source of truth.
Some pages export suspiciously small files—blank or all-gray—how do byte floors plus pixel variance automate flags without noisy false positives?
Enforce minimum byte thresholds and sample luminance variance; below threshold mark suspect_blank and open Visio manually to see if it is an empty page or a render failure.
One .vsdx spans many pages and needs one JPG per page—how do we systematically avoid flat-directory filename collisions?
Encode basename_pageIndex_quality.jpg and mirror that in the manifest; never flatten everything to single-level names that collide across folders.
Compliance wants proof of a full snapshot on a given day—is CSV alone enough, or must bucket versioning pair with a manifest hash seal?
CSV alone is mutable; seal bucket versions or read-only snapshots and hash the manifest file—editable spreadsheets are not non-repudiation.