lance-format / lance-format/lance

feat: bytes read and bytes write mectirc for per lance scanner and writer

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help wanted
Dominant language
Rust
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Merged PRs (30d)
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Description

When we scan the lance dataset, it's better to provide the read metrics, especially for the io bytes and IOPS metric.

The Spark web UI has some task-level metrics, for example, the input bytes. But now Lance can't provide it.

Image

The same metrics are required when we write a lance dataset.

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by locating the Lance scanner and writer implementations and reviewing any existing metrics instrumentation. Determine how per-scan read bytes and IOPS, and per-write bytes and IOPS, should be exposed; done means both scanning and writing provide the requested task-level metrics.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
data-engineering, observability
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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