~/talk

Query like a Pro: ES|QL meets Apache Arrow and Pandas

Talkat PyCon Greece 2025 · 2025-08-29..08-30· at 14:50· Auditorium "Miltiadis Evert"· [data-engineering, python]
slides:none on file

ES|QL runs inside Elasticsearch and streams results as Apache Arrow so Pandas can ingest them without JSON serialization, demonstrated by a one‑liner that maps ESQL Arrow output to a DataFrame. Demo loads NYC taxis from Parquet into Elastic Cloud serverless, samples down to <100k sampled rows, runs piped ES|QL queries (source → eval → bucket → sort) and plots results in matplotlib. Shows a simple anomaly rule P95 > 2.5× average and verifies plots and bucketing work end to end.

AI-written summary · about

  1. 0:00Introduction and motivation
  2. 2:02ES|QL as query engine
  3. 6:27Apache Arrow integration
  4. 9:54Demo setup and data loading
  5. 13:36Querying and analysis in pandas
  6. 15:45Visualization and insights
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