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Biweekly
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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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