bltools transform --input weekly_data --state process.state --resume For reproducible pipelines, use the official bltools v2.2 container:
bltools migrate --old-config ./rules_v1.yaml --new-config ./rules_v2.yaml Using a 50 GB CSV file with 500 million rows, on an 8-core/16-thread server:
rules: - field: email validate: MATCHES_REGEX ^\S+@\S+\.\S+$ on_fail: reject - field: age validate: BETWEEN 0 AND 120 on_fail: default(18) Run:
In the fast-evolving landscape of data transformation, ETL (Extract, Transform, Load) processes, and business logic automation, staying updated with the right tools is crucial. For data engineers, analysts, and DevOps professionals who rely on lightweight, scriptable utilities, the release of bltools v2.2 marks a significant milestone.
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Memory consumption is also improved by approximately 20% due to streaming optimizations. Tip 1: Use Pipes for Zero-Intermediate Files cat huge_log.csv | bltools filter --condition "status_code == 200" | bltools convert --to jsonl > clean.log v2.2’s streaming mode detects pipes automatically and disables parallelization for safe FIFO handling. Tip 2: Incremental Processing with State Files The new --state flag allows you to resume interrupted jobs:
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