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| Date | Action | Decided by |
|---|---|---|
| 2024-03-20 | Appointed Jingsong Lee | the board, by resolution |
| Date | Decision | Item | Outcome |
|---|---|---|---|
| 2024-03-20 | Establish the Apache Paimon Project | special order | approved |
## Description: The mission of Apache Paimon is the creation and maintenance of software related to a unified lake storage to build dynamic tables for both stream and batch processing with big data compute engines, supporting high-speed data ingestion and real-time data query ## Project Status: Current project status: Ongoing Issues for the board: none ## Membership Data: Apache Paimon was founded 2024-03-20 (2 years ago) There are currently 27 committers and 14 PMC members in this project. The Committer-to-PMC ratio is roughly 7:4. Community changes, past quarter: - No new PMC members. Last addition was Junhao Ye on 2025-02-25. - Chenghui Chen was added as committer on 2026-05-29 - Wenhai Zhao was added as committer on 2026-04-28 ## Project Activity: Software development activity: - Releasing version 1.4.1. Bug fix version. - Releasing paimon-rust 0.1.0 and 0.2.0. Rust Implementation. - Releasing paimon-mosaic 0.1.0. Columnar hybrid format for wide tables. - We discussed in dev: next step is 2.0, aimed at a multimodal data lake. ## Community Health: - dev mail list had 167% increase (187 emails compared to 70). - issue mail list had 96% increase (5050 emails compared to 2541). - user email list had 64 decrease (11 emails compared to 30), not used much. - Contribution and activity of the community have significantly increased.
## Description: The mission of Apache Paimon is the creation and maintenance of software related to a unified lake storage to build dynamic tables for both stream and batch processing with big data compute engines, supporting high-speed data ingestion and real-time data query ## Project Status: Current project status: Ongoing Issues for the board: none ## Membership Data: Apache Paimon was founded 2024-03-20 (2 years ago) There are currently 25 committers and 14 PMC members in this project. The Committer-to-PMC ratio is roughly 7:4. Community changes, past quarter: - No new PMC members. Last addition was Junhao Ye on 2025-02-25. - Hongbo Xiao was added as committer on 2026-02-24 ## Project Activity: Software development activity: - We are developing BTree index to significantly accelerate lake queries. - We are currently releasing version 1.4.0. - We discussed in dev: next step is 2.0, aimed at a multimodal data lake. ## Community Health: - dev mail list had a 1% increase (73 emails compared to 72). - user email list had a 7% increase (30 emails compared to 28). - issue mail list had 37% increase (2675 emails compared to 1947). - PR contributions continue to increase significantly.
## Description: The mission of Apache Paimon is the creation and maintenance of software related to a unified lake storage to build dynamic tables for both stream and batch processing with big data compute engines, supporting high-speed data ingestion and real-time data query ## Project Status: Current project status: Ongoing Issues for the board: none ## Membership Data: Apache Paimon was founded 2024-03-20 (2 years ago) There are currently 24 committers and 14 PMC members in this project. The Committer-to-PMC ratio is roughly 3:2. Community changes, past quarter: - No new PMC members. Last addition was Junhao Ye on 2025-02-25. - Lei Li was added as committer on 2025-12-03. ## Project Activity: Software development activity: - We released the release 1.3.0 on 2025-11-12. - We released the release 1.3.1 on 2025-11-20. - We released PyPaimon pure Python version in release 1.3. - We developed Incremental Clustering feature for low latency query. ## Community Health: - dev mail list had a 5% increase (74 emails compared to 70). - user email list had a 10% increase (32 emails compared to 29). - issue mail list had 0% increase (2023 emails compared to 2021). - Community PR contributions have increased significantly.
## Description: The mission of Apache Paimon is the creation and maintenance of software related to a unified lake storage to build dynamic tables for both stream and batch processing with big data compute engines, supporting high-speed data ingestion and real-time data query ## Project Status: Current project status: Ongoing Issues for the board: none ## Membership Data: Apache Paimon was founded 2024-03-20 (a year ago) There are currently 23 committers and 14 PMC members in this project. The Committer-to-PMC ratio is roughly 3:2. Community changes, past quarter: - No new PMC members. Last addition was Junhao Ye on 2025-02-25. - Jerry Jing was added as committer on 2025-08-01 - Yunfeng Zhou was added as committer on 2025-06-24 ## Project Activity: Software development activity: - We released the release 1.2.0 on 2025-07-16. - We developed PyPaimon pure Python version without the need of a JVM. - We developed Row Tracking feature to align with Apache Iceberg and Delta. ## Community Health: - dev mail list had a 42% increase (70 emails compared to 49). - We guided some discussions from GitHub to the dev mailing list. - user email list had a 163% increase (29 emails compared to 11). - technical questions in user email list, and promptly responded.
## Description: The mission of Apache Paimon is the creation and maintenance of software related to a unified lake storage to build dynamic tables for both stream and batch processing with big data compute engines, supporting high-speed data ingestion and real-time data query ## Project Status: Current project status: Ongoing Issues for the board: none ## Membership Data: Apache Paimon was founded 2024-03-20 (a year ago) There are currently 21 committers and 14 PMC members in this project. The Committer-to-PMC ratio is 3:2. Community changes, past quarter: - No new PMC members. Last addition was Junhao Ye on 2025-02-25. - No new committers. Last addition was Weijun Wang on 2024-12-20. There are three committer candidates to consider nominating them next quarter. ## Project Activity: Software development activity: - We released the release 1.1.0 on 2025-04-17. - We released the release 1.1.1 on 2025-05-16. - We integrated Iceberg's latest deletion vector to real-time sync. - We introduced RESTApi to make REST more easy to use. ## Community Health: - builds mail list had a 49% decrease in traffic in the past quarter (14 vs 27). - dev mail list had a 60% decrease in traffic in the past quarter (52 vs 129). Various fixes and improvements are still underway, no many major features.
## Description: The mission of Apache Paimon is the creation and maintenance of software related to a unified lake storage to build dynamic tables for both stream and batch processing with big data compute engines, supporting high-speed data ingestion and real-time data query ## Project Status: Current project status: Ongoing Issues for the board: none ## Membership Data: Apache Paimon was founded 2024-03-20 (a year ago) There are currently 21 committers and 14 PMC members in this project. The Committer-to-PMC ratio is 3:2. Community changes, past quarter: - Junhao Ye was added to the PMC on 2025-02-25 - Xinyu Zou was added to the PMC on 2025-02-25 - Weijun Wang was added as committer on 2024-12-20 ## Project Activity: Software development activity: - We released the PyPaimon 0.2.0 on 2024-12-19. Python SDK for Paimon. - We released the release 1.0.0 on 2025-01-03. - We released the release 1.0.1 on 2025-02-10. - We have improved Iceberg compatibility, producing Iceberg snapshots. - We are implementing REST Catalog, this is very beneficial for the ecology. ## Community Health: Overall community health is good. - dev mail list had a 53% increase in traffic in the past quarter (138 vs 88). - user mail list had a 100% increase in traffic in the past quarter (22 vs 11). - users and contributors in the community has increased due to version 1.0.
## Description: The mission of Apache Paimon is the creation and maintenance of software related to a unified lake storage to build dynamic tables for both stream and batch processing with big data compute engines, supporting high-speed data ingestion and real-time data query ## Project Status: Current project status: Ongoing Issues for the board: none ## Membership Data: Apache Paimon was founded 2024-03-20 (9 months ago) There are currently 20 committers and 12 PMC members in this project. The Committer-to-PMC ratio is 5:3. Community changes, past quarter: - No new PMC members. Last addition was Yann Byron (Bi Yan) on 2024-03-20. - Yu Xu was added as committer on 2024-11-16 ## Project Activity: Software development activity: - We released the release 0.9.0 on 2024-09-13. - We prepared the release candidates for 1.0.0. - We have supported view, format table, object table in catalog layer. - We have supported Iceberg compatibility, producing Iceberg snapshots. - We prepared the release candidates for paimon python sdk. ## Community Health: Overall community health is good. - dev mail list had a 47% decrease in traffic in the past quarter (76 vs 141). - Community is mainly focusing on discussions around Issues and Pull Requests. - Multiple new contributors are contributing code.
## Description: The mission of Apache Paimon is the creation and maintenance of software related to a unified lake storage to build dynamic tables for both stream and batch processing with big data compute engines, supporting high-speed data ingestion and real-time data query ## Project Status: Current project status: Ongoing Issues for the board: none ## Membership Data: Apache Paimon was founded 2024-03-20 (6 months ago) There are currently 19 committers and 12 PMC members in this project. The Committer-to-PMC ratio is roughly 5:3. Community changes, past quarter: - No new PMC members. Last addition was Yann Byron (Bi Yan) on 2024-03-20. - Gang Wang was added as committer on 2024-06-06 Several contributors can be considered for Committer nomination. ## Project Activity: Software development activity: - We released the first release 0.8.1 on 2024-06-11. - We released the first release 0.8.2 on 2024-07-12. - We prepared the release candidates for 0.9.0. - We are discussing the next version being 1.0. ## Community Health: Overall community health is good. - dev mail list had a 5% decrease in traffic in the past quarter (149 vs 156). - Community is mainly focusing on discussions around Issues and Pull Requests. - Subproject paimon-webui and paimon-rust have attracted many contributors.
## Description: The mission of Apache Paimon is the creation and maintenance of software related to a unified lake storage to build dynamic tables for both stream and batch processing with big data compute engines, supporting high-speed data ingestion and real-time data query ## Project Status: Current project status: Ongoing Issues for the board: none ## Membership Data: Apache Paimon was founded 2024-03-20 (2 months ago) There are currently 18 committers and 12 PMC members in this project. The Committer-to-PMC ratio is 3:2. Community changes, past quarter: - No new PMC members (project graduated recently). - No new committers were added. ## Project Activity: Software development activity: - We released the first release 0.8.0 on 2024-05-10. - We are preparing to making release candidates for 0.8.1 in the coming week. - We are developing Deletion Vectors supports for non-primary-key table. ## Community Health: The Paimon community is healthy and active. dev@paimon.apache.org had a 60% increase in traffic in the past quarter (186 emails compared to 116) issues@paimon.apache.org had a 14% increase in traffic in the past quarter (2648 emails compared to 2314) user@paimon.apache.org had a 39% decrease in traffic in the past quarter (37 emails compared to 60)
## Description: The mission of Apache Paimon is the creation and maintenance of software related to a unified lake storage to build dynamic tables for both stream and batch processing with big data compute engines, supporting high-speed data ingestion and real-time data query ## Project Status: Current project status: Ongoing Issues for the board: none ## Membership Data: Apache Paimon was founded 2024-03-20 (a month ago) There are currently 18 committers and 12 PMC members in this project. The Committer-to-PMC ratio is 3:2. Community changes, past quarter: - No new PMC members (project graduated recently). - No new committers were added. The Paimon PMC is actively monitoring and discussing new PMC and committers. ## Project Activity: No version has been released yet. We are actively releasing 0.8.0, and currently RC2 has been cancelled. We are preparing for RC3. ## Community Health: The Paimon community is healthy and active. dev@paimon.apache.org had a 70% increase in traffic in the past quarter (159 emails compared to 93): The code design of the community has been more guided towards discussions on dev@ mailing list. After graduation, there were quite a few contributors. issues@paimon.apache.org had a 21% decrease in traffic in the past quarter (2206 emails compared to 2764): February is China's Spring Festival, and the number of participants has significantly decreased. user@paimon.apache.org had a 10% decrease in traffic in the past quarter (47 emails compared to 52).
## Description: Paimon is a lake format that enables building a Realtime Lakehouse Architecture with Flink and Spark for both streaming and batch operations. ## Project Status: Current project status: Ongoing Issues for the board: none ## Membership Data: Apache Paimon was founded 2023-03-12 (1 years ago) There are currently 18 committers and 12 PMC members in this project. The Committer-to-PMC ratio is roughly 3:2. Community changes, past quarter: - Zelin Yu was added as PMC member on 2024-01-19. - WenJun Min was added as committer on 2024-02-08 - Xinyu Zou was added as committer on 2024-02-26 The Paimon PMC is actively monitoring and discussing new PMC and committers. ## Project Activity: Recent releases: * Paimon shade 0.6.0-incubating was released on 2024-01-25 * Paimon 0.6.1-incubating was released on 2024-02-06 * Paimon 0.7.0-incubating was released on 2024-02-22 ## Community Health: The Paimon community is healthy and active. dev@paimon.apache.org had a 66% increase in traffic in the past quarter (158 emails compared to 95): The code design of the community has been more guided towards discussions on dev@ mailing list. issues@paimon.apache.org had a 2% increase in traffic in the past quarter (2409 emails compared to 2359): February has China's Spring Festival, and the number of participants has significantly decreased. user@paimon.apache.org had a 2% decrease in traffic in the past quarter (51 emails compared to 52): Mainly asking how to join Slack.
Paimon is a unified lake storage to build dynamic tables for both stream and batch processing with big data compute engines, supporting high-speed data ingestion and real-time data query. Paimon has been incubating since 2023-03-12. ### Three most important unfinished issues to address before graduating: 1.Paimon Website: release note page, power by page. 2.Release 0.5-incubating. 3.More publicity for the English community ### Are there any issues that the IPMC or ASF Board need to be aware of? - N/A ### How has the community developed since the last report? - Paimon Website: add community page, security page. ### How has the project developed since the last report? - Prepare release 0.5-incubating - Introduce Tag creation on snapshots - Paimon Metrics integration to Flink - Spark integration to write to Paimon with schema evolution. ### How would you assess the podling's maturity? Please feel free to add your own commentary. - [ ] Initial setup - [ ] Working towards first release - [X] Community building - [ ] Nearing graduation - [ ] Other: ### Date of last release: 2023-06-07 ### When were the last committers or PPMC members elected? 2023-08-01 Chong Zhuang was added as a new committer ### Have your mentors been helpful and responsive? - Our mentors have been very helpful and responsive. ### Is the PPMC managing the podling's brand / trademarks? - The VP, Brand has approved the project name. ### Signed-off-by: - [ ] (paimon) Becket Qin Comments: - [ ] (paimon) Robert Metzger Comments: - [ ] (paimon) Stephan Ewen Comments: - [X] (paimon) Yu Li Comments: The development activities (code contribution, tech discussion, etc.) are frequent, new contributor / committer keeps joining, and people care about document and website building, all indicate a good community development. ### IPMC/Shepherd notes:
Paimon is a unified lake storage to build dynamic tables for both stream and batch processing with big data compute engines, supporting high- speed data ingestion and real-time data query. Paimon has been incubating since 2023-03-12. ### Three most important unfinished issues to address before graduating: 1.Publish our first release 2.Grow the community 3.Improve our website to contain security page, committer/ppmc list, contributor guide, and etc. ### Are there any issues that the IPMC or ASF Board need to be aware of? N/A ### How has the community developed since the last report? 1. Committed our LOGO 2. Several PIPs are in discussion on the dev mailing list, and several have agreed to start development: https://cwiki.apache.org/confluence/display/PAIMON/Paimon+Improvement+Proposals ### How has the project developed since the last report? 1. First release under voting in general@incubator.apache.org 2. Support Kafka CDC data ingestion 3. Support Consumer-id to consume from the previous progress without resuming from the state ### How would you assess the podling's maturity? Please feel free to add your own commentary. - [X] Initial setup - [X] Working towards first release - [ ] Community building - [ ] Nearing graduation - [ ] Other: ### Date of last release: XXXX-XX-XX ### When were the last committers or PPMC members elected? N/A ### Have your mentors been helpful and responsive? Our mentors have been very helpful and responsive. ### Is the PPMC managing the podling's brand / trademarks? The VP, Brand has approved the project name. ### Signed-off-by: - [ ] (paimon) Becket Qin Comments: - [X] (paimon) Robert Metzger Comments: No concerns. - [X] (paimon) Stephan Ewen Comments: Team seems to operate maturely and to understand community processes well (which is not surprising, given they are all committers in other projects). - [X] (paimon) Yu Li Comments: Team is actively working towards the first apache release (after entering incubation) and has addressed several legal issues found during IPMC review. Meantime discussions happen frequently and adequately on the dev mailing list, which indicates a good community build-up. ### IPMC/Shepherd notes:
Paimon is a unified lake storage to build dynamic tables for both stream and batch processing with big data compute engines, supporting high- speed data ingestion and real-time data query. Paimon has been incubating since 2023-03-12. ### Three most important unfinished issues to address before graduating: 1. Publish our first release 2. Grow the community 3. Commit our LOGO ### Are there any issues that the IPMC or ASF Board need to be aware of? * N/A ### How has the community developed since the last report? 1. Resolved the suitable name search for "Apache Paimon" 2. Improved our website 3. Created our slack channel in ASF ### How has the project developed since the last report? 1. Prepare and start voting for our first apache release 2. Support Flink CDC data ingestion 3. Support Lookup Changelog-producer ### How would you assess the podling's maturity? Please feel free to add your own commentary. - [X] Initial setup - [X] Working towards first release - [ ] Community building - [ ] Nearing graduation - [ ] Other: ### Date of last release: N/A ### When were the last committers or PPMC members elected? * 2023-04-19, Zelin Yu was added as new committer. ### Have your mentors been helpful and responsive? * Our mentors have been very helpful and responsive. ### Is the PPMC managing the podling's brand / trademarks? * The VP, Brand has approved the project name. ### Signed-off-by: - [ ] (paimon) Becket Qin Comments: - [ ] (paimon) Robert Metzger Comments: - [ ] (paimon) Stephan Ewen Comments: - [X] (paimon) Yu Li Comments: Glad to see the completion of project setup, as well as the active development and preparation for the first apache release. It's also great to see new committer joining the team, indicating a healthy community growth. ### IPMC/Shepherd notes:
