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# Incubator PMC report for May 2026 The Apache Incubator is the entry path into the ASF for projects and codebases wishing to become part of the Foundation's efforts. There are currently 28 podlings under incubation. In April, the Incubator made 6 releases, and some release votes are currently underway. There were two additions and no removals to IPMC membership. Mailing list discussion in April focused primarily on release voting activity. There was also a discussion about using MCP-based tooling with publicly available data to generate Incubator insights, which sparked interest on the mailing list. This tooling was subsequently used, with human oversight, to help produce this report. A new incubation proposal for PIC Standard was discussed. A graduation discussion for Apache Livy has started. Caldera has shown very limited engagement with ASF since entering incubation. Project communication has not been taking place on the mailing lists, and initial setup tasks, including ICLAs, accounts, and SGA progress, have not been progressing visibly. The IPMC raised these concerns with the project, and the podling has confirmed it will change course to address them and is making progress. OpenServerless has been incubating for nearly two years and has not yet released an ASF release. Mailing list activity is almost entirely automated GitHub messages. No new committers or PPMC members have been elected since August 2024, and a private message sent to the podling about one month ago has not received a response. Mentor comments in the most recent reports and on the general list directly reflect these concerns. The IPMC has raised the question of whether to initiate a discussion about retirement. OpenServerless has started to move towards marking a release. OzHera has not made an ASF release in over a year despite ongoing development activity. The project has been asked to outline the current status of release preparation, what is blocking the next release, and to address low mentor engagement across recent reporting periods. PouchDB has been in incubation for 12 months with no ASF release. The project website at pouchdb.apache.org needs some work (which looks to have been done), and the previous project site at pouchdb.com still exists where it shouldn't. The IPMC raised these issues with the project's mentors, and the project is working to address them. ## Community ### New IPMC members: - Jark Wu - Russell Spitzer ### People who left the IPMC: - No one ## New Podlings - None ## Podlings that failed to report, expected next month - TODO ## Graduations - None The board has motions for the following: - None ## Releases The following releases entered distribution during the month of April: - Cloudberry 2.1.0 - Fluss-rust 0.1.0 - Hamilton 1.90.0 - Iggy 0.8.0 - KIE 10.2.0 - ResilientDB 1.12.0 ## IP Clearance - None ## Legal / Trademarks N/A ## Infrastructure N/A ## Table of Contents [Burr](#burr) [Caldera](#caldera) [Casbin](#casbin) [Cloudberry](#cloudberry) [Fesod](#fesod) [GeaFlow](#geaflow) [GraphAr](#graphar) [Hamilton](#hamilton) [Pony Mail](#pony mail) [Seata](#seata) [Texera](#texera) [Toree](#toree) [XTable](#xtable) -------------------- ## Burr Burr is a lightweight in-process python framework that standardizes the expression and execution of state machines as action-driven graphs, while making graph execution easily observable. It is particularly suited for AI agent workflows, simulations, and other dynamic systems, and comes with a self-hostable observability UI that integrates with OpenTelemetry. Burr has been incubating since 2025-05-24. ### Three most important unfinished issues to address before graduating: 1. 2. 3. ### Are there any issues that the IPMC or ASF Board need to be aware of? ### How has the community developed since the last report? ### How has the project developed since the last report? ### How would you assess the podling's maturity? Please feel free to add your own commentary. - [ ] Initial setup - [ ] 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? ### Have your mentors been helpful and responsive? Are things falling through the cracks? If so, please list any open issues that need to be addressed. ### Is the PPMC managing the podling's brand / trademarks? Are 3rd parties respecting and correctly using the podlings name and brand? If not what actions has the PPMC taken to correct this? Has the VP, Brand approved the project name? ### Signed-off-by: - [ ] (burr) Kevin Ratnasekera Comments: - [ ] (burr) Ayush Saxena Comments: - [ ] (burr) PJ Fanning Comments: - [ ] (burr) Jarek Potiuk Comments: ### IPMC/Shepherd notes: -------------------- ## Caldera Caldera provides a modular platform for modeling, scripting, and executing adversary behavior. It allows users to construct emulation plans, provides agents for communicating with the command and control server, and enables users to evaluate security detections in a structured, scalable, and repeatable way. With the use of plug- ins and community-contributed features, Caldera supports a range of use cases including adversary emulation, purple teaming, detection engineering, and continuous security validation. Using Caldera, defenders can emulate known threat actor behavior and perform other red team activity to evaluate their organization’s defensive capabilities, test analytics, and find detection gaps. As a modular tool based on the MITRE ATT&CK framework, Caldera is designed to be extensible, intelligence-driven, and automation-friendly. Caldera has been incubating since 2025-12-19. ### Three most important unfinished issues to address before graduating: 1. 2. 3. ### Are there any issues that the IPMC or ASF Board need to be aware of? ### How has the community developed since the last report? ### How has the project developed since the last report? ### How would you assess the podling's maturity? Please feel free to add your own commentary. - [ ] Initial setup - [ ] 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? ### Have your mentors been helpful and responsive? Are things falling through the cracks? If so, please list any open issues that need to be addressed. ### Is the PPMC managing the podling's brand / trademarks? Are 3rd parties respecting and correctly using the podlings name and brand? If not what actions has the PPMC taken to correct this? Has the VP, Brand approved the project name? ### Signed-off-by: - [ ] (caldera) Kevin Ratnasekera Comments: - [ ] (caldera) Francis Chuang Comments: - [ ] (caldera) PJ Fanning Comments: - [ ] (caldera) Gordon King Comments: ### IPMC/Shepherd notes: -------------------- ## Casbin Casbin is a powerful, open-source access control framework that provides a unified, model-driven approach to authorization. Casbin has been incubating since 2026-02-07. ### Three most important unfinished issues to address before graduating: 1. 2. 3. ### Are there any issues that the IPMC or ASF Board need to be aware of? ### How has the community developed since the last report? ### How has the project developed since the last report? ### How would you assess the podling's maturity? Please feel free to add your own commentary. - [ ] Initial setup - [ ] 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? ### Have your mentors been helpful and responsive? Are things falling through the cracks? If so, please list any open issues that need to be addressed. ### Is the PPMC managing the podling's brand / trademarks? Are 3rd parties respecting and correctly using the podlings name and brand? If not what actions has the PPMC taken to correct this? Has the VP, Brand approved the project name? ### Signed-off-by: - [ ] (casbin) Hao Ding Comments: - [ ] (casbin) Huajie Wang Comments: - [ ] (casbin) Hulk Lin Comments: - [ ] (casbin) Jerry Shao Comments: - [ ] (casbin) Zili Chen Comments: ### IPMC/Shepherd notes: -------------------- ## Cloudberry Cloudberry Database, built on the latest PostgreSQL kernel, is one of the most advanced and mature open-source MPP (Massively Parallel Processing) databases available. Cloudberry has been incubating since 2024-10-11. ### Three most important unfinished issues to address before graduating: 1. 2. 3. ### Are there any issues that the IPMC or ASF Board need to be aware of? ### How has the community developed since the last report? ### How has the project developed since the last report? ### How would you assess the podling's maturity? Please feel free to add your own commentary. - [ ] Initial setup - [ ] 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? ### Have your mentors been helpful and responsive? Are things falling through the cracks? If so, please list any open issues that need to be addressed. ### Is the PPMC managing the podling's brand / trademarks? Are 3rd parties respecting and correctly using the podlings name and brand? If not what actions has the PPMC taken to correct this? Has the VP, Brand approved the project name? ### Signed-off-by: - [ ] (cloudberry) Roman Shaposhnik Comments: - [ ] (cloudberry) Willem Ning Jiang Comments: - [ ] (cloudberry) Kent Yao Comments: ### IPMC/Shepherd notes: -------------------- ## Fesod Fesod is a high-performance and memory-efficient Java library for reading and writing Excel files, designed to simplify development and ensure reliability. Fesod has been incubating since 2025-09-17. ### Three most important unfinished issues to address before graduating: 1. 2. 3. ### Are there any issues that the IPMC or ASF Board need to be aware of? ### How has the community developed since the last report? ### How has the project developed since the last report? ### How would you assess the podling's maturity? Please feel free to add your own commentary. - [ ] Initial setup - [ ] 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? ### Have your mentors been helpful and responsive? Are things falling through the cracks? If so, please list any open issues that need to be addressed. ### Is the PPMC managing the podling's brand / trademarks? Are 3rd parties respecting and correctly using the podlings name and brand? If not what actions has the PPMC taken to correct this? Has the VP, Brand approved the project name? ### Signed-off-by: - [ ] (fesod) tison Comments: - [ ] (fesod) Dave Fisher Comments: - [ ] (fesod) Huajie Wang Comments: - [ ] (fesod) PJ Fanning Comments: ### IPMC/Shepherd notes: -------------------- ## GeaFlow GeaFlow is a streaming graph computing engine for distributed large-scale real-time graph storage and analysis. It supports trillion-level graph storage, hybrid graph and table processing, real-time/offline graph computing, and interactive graph analysis. Currently, the community is actively advancing the development of Graph Memory, aiming to serve as the underlying infrastructure for Agent Memory. GeaFlow has been incubating since 2025-06-06. ### Three most important unfinished issues to address before graduating: 1.Cultivate a more diverse community by engaging contributors and committers from varied organizations and global regions. 2.Implement predictable release cycles and maintain high project stability to encourage broad participation and adoption. ### Are there any issues that the IPMC or ASF Board need to be aware of? No ### How has the community developed since the last report? The GeaFlow community has maintained its core contributor base over the past month, with existing contributors continuing to drive development. The community has remained active with ongoing contributions including new features, optimizations, and bugfix. Additionally, several PRs are currently under review. Furthermore, multiple community contributors are actively participating in CoC Asia 26, which will be held in Beijing, China, and have prepared multiple proposals for the associated Incubator, Streaming, and Data+AI tracks. ### How has the project developed since the last report? Over the past month, the GeaFlow project has continued its progress with a focus on code robustness, dependency management, and community facilitation. Key developments include: - Introduced the CONTRIBUTING.md file to outline contribution guidelines, facilitating easier onboarding for new developers (#765). - Enhanced code stability by adding checks for empty search results to prevent array out of bounds errors (#769) and handling null/empty inputs in average methods (#760). - Optimized code quality by defining the BYTES_PER_KB constant for consistency (#770), replacing raw type usage with type-safe methods (#766), and excluding conflicting lucene-core dependencies (#778). - Improved CI infrastructure by formatting build and test commands for better readability (#763). - New pull requests were opened targeting production GCN inference pipelines, hot-reload mechanisms, and vector implementation, indicating active development in AI capabilities and architecture optimization. These updates demonstrate continued advancement in codebase health, project infrastructure stability, and the expansion of Graph+AI features. ### 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: The last version was released on November 19, 2025. ### When were the last committers or PPMC members elected? The last committers were elected on January 4, 2026. ### Have your mentors been helpful and responsive? Yes, we have received helpful guidance. ### Is the PPMC managing the podling's brand / trademarks? N/A. ### Signed-off-by: - [ ] (geaflow) Willem Ning Jiang Comments: - [x] (geaflow) Xin Wang Comments: - [ ] (geaflow) Jingsong Lee Comments: - [ ] (geaflow) Paul Klingelhuber Comments: - [X] (geaflow) Justin Mclean Comments: ### IPMC/Shepherd notes: -------------------- ## GraphAr GraphAr is an open-source and language-independent data file format designed for efficient graph data storage and retrieval. GraphAr has been incubating since 2024-03-25. ### Three most important unfinished issues to address before graduating: 1. 2. 3. ### Are there any issues that the IPMC or ASF Board need to be aware of? ### How has the community developed since the last report? ### How has the project developed since the last report? ### How would you assess the podling's maturity? Please feel free to add your own commentary. - [ ] Initial setup - [ ] 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? ### Have your mentors been helpful and responsive? Are things falling through the cracks? If so, please list any open issues that need to be addressed. ### Is the PPMC managing the podling's brand / trademarks? Are 3rd parties respecting and correctly using the podlings name and brand? If not what actions has the PPMC taken to correct this? Has the VP, Brand approved the project name? ### Signed-off-by: - [ ] (graphar) Calvin Kirs Comments: - [ ] (graphar) tison Comments: - [ ] (graphar) Xiaoqiao He Comments: - [ ] (graphar) Yu Li Comments: ### IPMC/Shepherd notes: -------------------- ## Hamilton Hamilton is a lightweight in-process framework to define, execute, and observe directed acyclic graphs (DAGs) that express data transformations. In Hamilton, one can express complex DAGs of transformations, e.g. from dataframe transformations (using pandas, polars, PySpark), machine learning pipelines, through to regular software engineering API request and LLM API based workflows. Observability hooks are built into the framework. The Hamilton UI is a self-hostable service to capture observability output from workflow runs. Hamilton has been incubating since 2025-04-12. ### Three most important unfinished issues to address before graduating: 1. 2. 3. ### Are there any issues that the IPMC or ASF Board need to be aware of? ### How has the community developed since the last report? ### How has the project developed since the last report? ### How would you assess the podling's maturity? Please feel free to add your own commentary. - [ ] Initial setup - [ ] 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? ### Have your mentors been helpful and responsive? Are things falling through the cracks? If so, please list any open issues that need to be addressed. ### Is the PPMC managing the podling's brand / trademarks? Are 3rd parties respecting and correctly using the podlings name and brand? If not what actions has the PPMC taken to correct this? Has the VP, Brand approved the project name? ### Signed-off-by: - [ ] (hamilton) Kevin Ratnasekera Comments: - [ ] (hamilton) Ayush Saxena Comments: - [ ] (hamilton) PJ Fanning Comments: - [ ] (hamilton) Jarek Potiuk Comments: ### IPMC/Shepherd notes: -------------------- ## Pony Mail Pony Mail is a mail-archiving, archive viewing, and interaction service, that can be integrated with many email platforms. Pony Mail has been incubating since 2016-05-27. ### Three most important unfinished issues to address before graduating: 1. 2. 3. ### Are there any issues that the IPMC or ASF Board need to be aware of? ### How has the community developed since the last report? ### How has the project developed since the last report? ### How would you assess the podling's maturity? Please feel free to add your own commentary. - [ ] Initial setup - [ ] 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? ### Have your mentors been helpful and responsive? Are things falling through the cracks? If so, please list any open issues that need to be addressed. ### Is the PPMC managing the podling's brand / trademarks? Are 3rd parties respecting and correctly using the podlings name and brand? If not what actions has the PPMC taken to correct this? Has the VP, Brand approved the project name? ### Signed-off-by: - [ ] (ponymail) John D. Ament Comments: - [ ] (ponymail) Dave Fisher Comments: ### IPMC/Shepherd notes: -------------------- ## Seata Seata(Simple Extensible Autonomous Transaction Architecture)is an easy-to- use and high-performance distributed transaction solution, used to solve the data consistency problem. Seata has been incubating since 2023-10-29. ### Three most important unfinished issues to address before graduating: 1. 2. 3. ### Are there any issues that the IPMC or ASF Board need to be aware of? ### How has the community developed since the last report? ### How has the project developed since the last report? ### How would you assess the podling's maturity? Please feel free to add your own commentary. - [ ] Initial setup - [ ] 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? ### Have your mentors been helpful and responsive? Are things falling through the cracks? If so, please list any open issues that need to be addressed. ### Is the PPMC managing the podling's brand / trademarks? Are 3rd parties respecting and correctly using the podlings name and brand? If not what actions has the PPMC taken to correct this? Has the VP, Brand approved the project name? ### Signed-off-by: - [ ] (seata) Sheng Wu Comments: - [ ] (seata) Justin Mclean Comments: - [ ] (seata) Huxing Zhang Comments: - [ ] (seata) Heng Du Comments: - [x] (seata) Xin Wang Comments: ### IPMC/Shepherd notes: -------------------- ## Texera Texera is an open-source system to support collaborative data science, AI, and ML using GUI-based workflows. Our vision is to develop a system to support cloud platforms on which users can easily analyze data and use AI/ML techniques provided as operators. Users with various backgrounds, irrespective of whether they know coding or not, can collaborate on the same project to construct a pipeline. Experienced users can use programming languages such as Python, R, Java, and Scala to implement customized computation logic. The platform allows users to pause the execution of a workflow to investigate the operator states, and resume the execution at a later time. The platform can be used by a research community to publish valuable resources such as data sets, workflows, and ML models to share their domain-specific knowledge and support reproducibility of scientific research. The platform also allows users to elastically request computing resources from public clouds for computationally-intensive tasks. Texera has been incubating since 2025-04-12. ### Three most important unfinished issues to address before graduating: 1. 2. 3. ### Are there any issues that the IPMC or ASF Board need to be aware of? ### How has the community developed since the last report? ### How has the project developed since the last report? ### How would you assess the podling's maturity? Please feel free to add your own commentary. - [ ] Initial setup - [ ] 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? ### Have your mentors been helpful and responsive? Are things falling through the cracks? If so, please list any open issues that need to be addressed. ### Is the PPMC managing the podling's brand / trademarks? Are 3rd parties respecting and correctly using the podlings name and brand? If not what actions has the PPMC taken to correct this? Has the VP, Brand approved the project name? ### Signed-off-by: - [ ] (texera) Cezar Andrei Comments: - [ ] (texera) Gordon King Comments: - [ ] (texera) PJ Fanning Comments: - [ ] (texera) Ian Maxon Comments: ### IPMC/Shepherd notes: -------------------- ## Toree Toree provides applications with a mechanism to interactively and remotely access Apache Spark. Toree has been incubating since 2015-12-02. ### Three most important unfinished issues to address before graduating: 1. 2. 3. ### Are there any issues that the IPMC or ASF Board need to be aware of? ### How has the community developed since the last report? ### How has the project developed since the last report? ### How would you assess the podling's maturity? Please feel free to add your own commentary. - [ ] Initial setup - [ ] 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? ### Have your mentors been helpful and responsive? Are things falling through the cracks? If so, please list any open issues that need to be addressed. ### Is the PPMC managing the podling's brand / trademarks? Are 3rd parties respecting and correctly using the podlings name and brand? If not what actions has the PPMC taken to correct this? Has the VP, Brand approved the project name? ### Signed-off-by: - [ ] (toree) Luciano Resende Comments: - [ ] (toree) Ryan Blue Comments: - [ ] (toree) Weiwei Yang Comments: ### IPMC/Shepherd notes: -------------------- ## XTable XTable is an omni-directional converter for table formats that facilitates interoperability across data processing systems and query engines. XTable has been incubating since 2024-02-11. ### Three most important unfinished issues to address before graduating: 1. 2. 3. ### Are there any issues that the IPMC or ASF Board need to be aware of? ### How has the community developed since the last report? ### How has the project developed since the last report? ### How would you assess the podling's maturity? Please feel free to add your own commentary. - [ ] Initial setup - [ ] 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? ### Have your mentors been helpful and responsive? Are things falling through the cracks? If so, please list any open issues that need to be addressed. ### Is the PPMC managing the podling's brand / trademarks? Are 3rd parties respecting and correctly using the podlings name and brand? If not what actions has the PPMC taken to correct this? Has the VP, Brand approved the project name? ### Signed-off-by: - [ ] (xtable) Jesús Camacho Rodríguez Comments: - [ ] (xtable) Stamatis Zampetakis Comments: - [ ] (xtable) Jean-Baptiste Onofré Comments: ### IPMC/Shepherd notes: |
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