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| Date | Action | Decided by |
|---|---|---|
| 2023-11-15 | Appointed Jialin Qiao | the board, by resolution |
| Date | Decision | Item | Outcome |
|---|---|---|---|
| 2023-11-15 | Establish the Apache TsFile Project | special order | approved |
No report was submitted.
## Description: The mission of Apache TsFile is the creation and maintenance of software related to a columnar storage file format designed for time series data ## Project Status: Current project status: Ongoing with high activity. Issues for the board: No. ## Membership Data: Apache TsFile was founded 2023-11-15 (2 years ago) There are currently 21 committers and 18 PMC members in this project. The Committer-to-PMC ratio is 7:6. Community changes, past quarter: - No new PMC members. Last addition was Gaofei Cao on 2023-11-15. - No new committers. Last addition was Xinhao Gu on 2025-04-22. ## Project Activity: ### Recent releases: - 2.3.0 was released on 2026-04-27. - 2.2.1 was released on 2026-03-20. - 2.2.0 was released on 2025-12-30. ### Main work of project: This quarter saw significant progress in both feature development and multi-language ecosystem expansion. The tag filter feature, which enables filtering conditions on tag columns, has been completed. We also added support for importing data from Apache Parquet and Apache Arrow formats into TsFile, allowing users to convert existing columnar datasets into TsFile format with schema mapping or automatic inference. On the Python side, TsFileDataFrame was introduced, enabling users to read TsFile data directly as Pandas DataFrames. Python wheel support has been extended to Python 3.14, and compatibility with a broader range of NumPy versions has been improved. ## Community Health: dev@tsfile.apache.org had a 54% decrease in traffic in the past quarter (35 emails compared to 76). The decline is mainly because development this quarter was execution-focused — implementing features previously discussed on the mailing list — and more day-to-day discussions are happening on GitHub pull requests and issues. We are currently in contact with the Hugging Face community, working to make TsFile a first-class citizen in Hugging Face Datasets for storing time-series modality data. A pull request[1] has been submitted and is under review. [1] https://github.com/huggingface/datasets/pull/8160
Hi, The following is the quarter report of TsFile: ## Description: The mission of Apache TsFile is the creation and maintenance of software related to a columnar storage file format designed for time series data ## Project Status: Current project status: Ongoing with high activity. Issues for the board: No. ## Membership Data: Apache TsFile was founded 2023-11-15 (2 years ago) There are currently 21 committers and 18 PMC members in this project. The Committer-to-PMC ratio is 7:6. Community changes, past quarter: - No new PMC members. Last addition was Gaofei Cao on 2023-11-15. - No new committers. Last addition was Xinhao Gu on 2025-04-22. ## Project Activity: ### Recent releases: - 2.2.0 was released on 2025-12-30. - 1.1.3 was released on 2025-12-25. - 1.1.2 was released on 2025-09-08. ### Main work of project: Recently, our development focus has been centered on two key areas: 1. Further expansion of query interfaces, adding support for filtering conditions on tag columns. 2. Integration into the Python Pandas ecosystem, enabling users to read from and write to TsFile directly as Pandas DataFrames. Moving forward, we plan to integrate with Apache Arrow, providing the capability to read data from TsFile on disk directly into memory in Arrow format. ## Community Health: Overall community health is good. The development mailing list saw a great increase(+182%) in traffic, where the future roadmap of the TsFile project is being widely discussed and the Python interface ecosystem for TsFile has also been discussed in detail.
## Description: The mission of Apache TsFile is the creation and maintenance of software related to a columnar storage file format designed for time series data ## Project Status: Current project status: Ongoing with high activity. Issues for the board: Is there a standard convention for publishing the Python dependency package of tsfile on PyPI? Currently, it’s being published under a community contributor’s personal account. ## Membership Data: Apache TsFile was founded 2023-11-15 (2 years ago) There are currently 21 committers and 18 PMC members in this project. The Committer-to-PMC ratio is 7:6. Community changes, past quarter: - No new PMC members. Last addition was Gaofei Cao on 2023-11-15. - No new committers. Last addition was Xinhao Gu on 2025-04-22. ## Project Activity: ### Recent releases: - 1.1.2 was released on 2025-09-08. - 2.1.1 was released on 2025-08-18. - 2.1.0 was released on 2025-07-11. ### Main work of project: We’ve released two minor versions to fix some issues. The new 2.x interfaces are mainly designed for the table model. In the near future, we plan to unify the write and query interfaces, which means the tsfile read/write layer will need to support both the tree and table models. To achieve this, we need to explore a way to automatically convert between models — mapping the original tree-model files to the table model — so that the new interfaces can read and write tsfile files generated by the tree model (i.e., version 1.x). ## Community Health: The activity of the development mailing list has seen a slight decline recently, because there was a long holiday in China for the National Day and Mid-Autumn Festival.
Hi, The following is the quarter report of TsFile: ## Description: The mission of Apache TsFile is the creation and maintenance of software related to a columnar storage file format designed for time series data ## Project Status: Current project status: Ongoing with high activity. Issues for the board: no ## Membership Data: - There are currently 21 committers and 18 PMC members in this project. - The Committer-to-PMC ratio is 7:6. Community changes, past quarter: - No new PMC members. Last addition was Gaofei Cao on 2023-11-15. - No new committers. Last addition was Xinhao Gu on 2025-04-22. ## Project Activity: ### Recent releases: - 2.1.0 was released on 2025-07-11. - 2.0.3 was released on 2025-05-26. - 1.1.1 was released on 2025-04-14. ### Main work of project: The TsFile project has made substantial progress recently. With the release of version 2.1.0, a number of new features have been introduced. Notably, the Cpp/C/Python implementations now support TsFile Table reader and writer, marking a significant expansion of the project's multi-language interface capabilities. We are also attempting to implement some state-of-the-art time-series data encoding algorithms(like Camel[1]) in tsfile, aiming to improve the compression ratio of tsfile. ## Community Health: The activity of the development mailing list has seen a slight decline recently, still because some discussions have migrated to GitHub issues. Recently, a research team from Chongqing University specializing in floating-point number encoding and compression algorithms[2,3] has contacted the community, expressing their intention to contribute the compression algorithm published in their paper to the built-in encoding list of tsfile. The development and discussion process will take place on the mailing list. Meanwhile, we are committed to making tsfile a favorite in the academic community. Going forward, encoding and compression algorithms from relevant papers can all be implemented in tsfile, and end-to-end experiments can be conducted based on tsfile to form fair comparisons. [1] Yao, Yuanyuan, et al. "Camel: Efficient Compression of Floating-Point Time Series." Proceedings of the ACM on Management of Data 2.6 (2024): 1-26. [2] Ruiyuan Li, Zheng Li, Yi Wu, Chao Chen, Songtao Guo, Ming Zhang, and Yu Zheng. 2023. Erasing-based lossless compression method for streaming floating-point time series. CoRR abs/2306.16053. [3] Ruiyuan Li, Zheng Li, Yi Wu, Chao Chen, and Yu Zheng. 2023. Elf: Erasing-based Lossless Floating-Point Compression. Proc. VLDB Endow. 16, 7, 1763–1776.
No report was submitted.
## Description: The mission of Apache TsFile is the creation and maintenance of software related to a columnar storage file format designed for time series data ## Project Status: Current project status: Ongoing with high activity. Issues for the board: no ## Membership Data: Apache TsFile was founded 2023-11-15 (a year ago) There are currently 21 committers and 18 PMC members in this project. The Committer-to-PMC ratio is 7:6. Community changes, past quarter: - No new PMC members. Last addition was Gaofei Cao on 2023-11-15. - Colin Lee was added as committer on 2025-02-11 - Xinhao Gu was added as committer on 2025-04-22 ## Project Activity: ### Recent releases: - 1.1.1 was released on 2025-04-14. - 2.0.2 was released on 2025-04-11. - 2.0.1 was released on 2025-02-10. ### Main work of project: The new read and write interfaces of TsFile for C/C++ and Python are still in testing progress and almost done. Currently, the Python interface for tsfile only supports Python versions 3.9 and below. This is because our Python interface is built using a C wrapper, and Python 3.10 introduced incompatible changes to the C wrapper implementation. As a result, support for Python versions above 3.10 is still under active development, and we are working to adapt the tsfile python interface for these newer Python versions. ## Community Health: The activity of the development mailing list has seen a slight decline recently, partly because some discussions have migrated to GitHub issues. Additionally, due to some feature developments and discussions taking place internally within Timecho, the company has started sending weekly updates to the mailing list since last month. This initiative aims to ensure better transparency and keep the entire community informed about their weekly progress. Recently, we have been exploring advancements in time-series large model training file storage formats. Our work on tsfile, which offers high compression rates and low query latency, has attracted interest from contributors of open-source time-series large models on Hugging Face. Some are experimenting with replacing Apache Arrow with tsfile for storing training data, leveraging its efficiency advantages. They're trying to develop a TsFileDataSet based on Tsfile query interface and wishing to join and contribute to us.
## Description: Apache TsFile is a columnar storage file format designed specifically for time series data, with a focus on efficient storage, high throughput for read and write operations, and compatibility with various data processing frameworks. TsFile is intended to integrate seamlessly with existing time series databases, such as IoTDB, and data processing frameworks like Apache Spark and Apache Flink, facilitating the adoption of TsFile in IoT big data processing ecosystems.TsFile aims to become a widely adopted standard for time series data storage. ## Project Status: Current project status: Ongoing with high activity Issues for the board: no ## Membership Data: Apache TsFile was founded 2023-11-15 (a year ago) There are currently 19 committers and 18 PMC members in this project. The Committer-to-PMC ratio is roughly 1:1. Community changes, past quarter: - No new PMC members. Last addition was Gaofei Cao on 2023-11-15. - hongzhigao was added as committer on 2025-01-11 ## Project Activity: - 2.0.1 was released on 2025-02-10 - 2.0.0 was released on 2025-01-17 - 1.1.0 was released on 2024-11-10 ### Main work of project: - TsFile V4 format with Table Model was released - The new read and write interfaces for TsFile V4 which is aiming to make the interfaces in different programming languages more stylistically consistent in use are finished. Java SDK was firstly released, other languages(like C/C++, Python) are on the way. - Support dictionary encoding for STRING data type ## Community Health: The mail list is active. We discussed the release and version of TsFile. Besides, the doc management is also discussed and updated. dev@tsfile.apache.org had a 15% increase in traffic in the past quarter (67 emails compared to 58)
## Description: Apache TsFile is a columnar storage file format designed specifically for time series data, with a focus on efficient storage, high throughput for read and write operations, and compatibility with various data processing frameworks. TsFile is intended to integrate seamlessly with existing time series databases, such as IoTDB, and data processing frameworks like Apache Spark and Apache Flink, facilitating the adoption of TsFile in IoT big data processing ecosystems.TsFile aims to become a widely adopted standard for time series data storage. ## Project Status: Current project status: Mostly Okay Issues for the board: no ## Membership Data: Apache TsFile was founded 2023-11-15 (a year ago) There are currently 18 committers and 18 PMC members in this project. The Committer-to-PMC ratio is 1:1. Community changes, past quarter: - No new PMC members. Last addition was Gaofei Cao on 2023-11-15. - No new committers were added. ## Project Activity: 1.1.0 was released on 2024-11-10. * Support new data types: STRING, BLOB, TIMESTAMP, DATE * Introduce an optional encryption module to make TsFile more secure. * Support dictionary encoding for newly introduced STRING data type. Some optimizaitons: * We Introduce short-circuit evaluation and use Freemarker to generate type-specific filters to improve the query performance * Utilize the KMP and BM algorithms to significantly optimize the performance of LIKE predicate execution. ## Community Health: The activity level of the mailing list has declined a bit, as the development of TsFile V4 almost finished. There aren't many design points that need discussion. dev@tsfile.apache.org had a 47% decrease in traffic in the past quarter (64 emails compared to 119): We are designing the new read and write interfaces for TsFile, aiming to make the interfaces in different programming languages more consistent in use. Both for V3 (Point Tree model) and V4 (Device Table model).
## Description: The mission of Apache TsFile is the creation and maintenance of software related to a columnar storage file format designed for time series data ## Project Status: Current project status: Ongoing with high activity. Issues for the board: no ## Membership Data: Apache TsFile was founded 2023-11-15 (9 months ago) There are currently 18 committers and 18 PMC members in this project. The Committer-to-PMC ratio is 1:1. Community changes, past quarter: - No new PMC members. Last addition was Gaofei Cao on 2023-11-15. - No new committers were added. ## Project Activity: Support four new data types in TsFile, including Date, Timestamp, String and Blob. Add the implementation of C++ TsFile, with C, Python SDK. Introducing Lazy-decoding of page data in PageReader to improve the query performance and memory footprint. Fix RLBE Encoding for float and double, from lossy to lossless. Improve the performance of InFilter. TsFile v4 is almost ready for development. ## Community Health: The mail list is active. dev@tsfile.apache.org had a 170% increase in traffic in the past quarter (127 emails compared to 47)
## Description: The mission of Apache TsFile is the creation and maintenance of software related to a columnar storage file format designed for time series data ## Project Status: Current project status: Ongoing with high activity Issues for the board: no ## Membership Data: Apache TsFile was founded 2023-11-15 (6 months ago) There are currently 18 committers and 18 PMC members in this project. The Committer-to-PMC ratio is 1:1. Community changes, past quarter: - No new PMC members. Last addition was Gaofei Cao on 2023-11-15. - No new committers were added. ## Project Activity: * Refactor the project's directory structure to prepare for the subsequent implementation of TsFile in other languages like C/C++, Rust and so on. * In order to support for table models, the structure of TsFile V4 has been finalized and is currently under implementation. * Release a snapshot version `1.0.1-4ab90f6-SNAPSHOT` for IoTDB Project which has removed all the source code files about tsfile submudole in its master branch and depend on TsFile project through pom.xml. ## Community Health: The mail list is mostly Okay. dev@tsfile.apache.org had a 54% decrease in traffic in the past quarter (60 emails compared to 128)
## Description: Apache TsFile is a columnar storage file format designed specifically for time series data, with a focus on efficient storage, high throughput for read and write operations, and compatibility with various data processing frameworks. TsFile is intended to integrate seamlessly with existing time series databases, such as IoTDB, and data processing frameworks like Apache Spark and Apache Flink, facilitating the adoption of TsFile in IoT big data processing ecosystems.TsFile aims to become a widely adopted standard for time series data storage. ## Project Status: Apache TsFile was founded 2023-11-15 Current project status: Current project status: Ongoing with high activity. Issues for the board: no ## Membership Data: There are currently 18 committers and 18 PMC members in this project. The Committer-to-PMC ratio is 1:1. Community changes, past quarter: - No new PMC members. Last addition was Gaofei Cao on 2023-11-15. - No new committers were added. ## Project Activity: Apache TsFile 1.0.0 is released on 2024-02-20. The TsFile logo is defined: https://alioss.timecho.com/upload/20240201-165026.jpeg The Website of TsFile is online: https://tsfile.apache.org/ ## Community Health: The mail list is active. dev@tsfile.apache.org had a 7600% increase in traffic in the past quarter (154 emails compared to 2) notifications@tsfile.apache.org had a big increase in traffic in the past quarter (54 emails compared to 0)
No report was submitted.
## Description: TsFile is a columnar storage file format designed for time series data, which supports efficient compression, high throughput of read and write, and compatibility with various frameworks. ## Project Status: Current project status: Ongoing with high activity. Issues for the board: no. ## Membership Data: Apache TsFile was founded 2023-11-15 (2 month ago) There are currently 18 committers and 18 PMC members in this project. The Committer-to-PMC ratio is 1:1. Community changes, past quarter: - Project is initialized. new 18 PMC members ## Project Activity: - Release No release now. - Main work of project Sort out the connection layer between TsFile with IoTDB. Copy the code of TsFile from Apache IoTDB, there are 3 modules in TsFile repo now: tsfile, common, examples. Configured the github issue, github actions. ## Community Health: Great, the mail list is active.
No report was submitted.
