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Biweekly
October 29, 2025

Memory Limiter, Large String Support & Async Index Building | Greptime Biweekly Report

GreptimeDB introduces memory limiter for concurrent writes, adds large string data type support, and implements async index build triggers with 70 PRs merged.

Summary

Together with our global community of contributors, GreptimeDB continues to evolve and flourish as a growing open-source project. We are grateful to each and every one of you.

Below are the highlights among recent commits:

  • Introduce memory limiter for concurrent writes
  • Support large string data type
  • Implement async index build triggers

Contributors

For the past two weeks, our community has been super active with a total of 70 PRs merged. 3 PRs from 2 individual contributors merged successfully and lots pending to be merged.

Congrats on becoming our most active contributors in the past 2 weeks:

🎉 Welcome @Standing-Man to the community as a new contributor with a successfully merged PR, and more PRs from other individual contributors are waiting to be merged.

👏 A big THANK YOU to all our members and contributors! It is people like you who are making GreptimeDB a great product. Let's build an even greater community together.

Highlights of Recent PRs

db#7092 Writer Memory Limiter

Add memory limiting for concurrent HTTP and gRPC requests to prevent unbounded memory growth from large concurrent write operations.

db#7097 Support Large String

Support for the large string type for better integration with DataFusion's ecosystem.

db#7029 Implement Three Build Types for Async Index Build

Implemented three build types for async index build: flush, compaction, and schema change, improving the performance and stability of these triggering operations.

Good First Issue

Issue#6334 Enhances KILL Support for INSERT INTO SELECT Queries

Enhances KILL support for INSERT INTO SELECT queries.

Keywords: Query engine

Difficulty: Medium

Issue#6989 Enhance Copy from CSV File Command

Enhance copy from csv file command.

Keywords: CSV

Difficulty: Simple

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