microsoft / microsoft/Power-Fx

Ensure FirstN really only reads N records

Open
#2,849 0 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

Dominant language
C#
Stars
3.4k
Forks
358
Avg merge
10h 34m
Merged PRs (30d)
3

Description

This is especially important with network calls ... ensure that FirstN really only reads N rows.

Consider delegation and non-delegation cases.

Contributor guide

No contributing guide indexed for this repository

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 FirstN implementation and the code paths for delegation and non-delegation. Reproduce the network-call scenario, then verify that both paths read no more than N rows; the work is done when tests demonstrate that limit for each case.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp
Domain
data
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
45/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.