History

The project's life, one year at a time, told from the commit record: how activity rose and fell against the project's own baseline, who arrived when, and what was released.

Span
2014 – 2026
13 years
Peak Year
2018
6,794 commits
Releases
46
latest in 2026
2014BIRTHfirst commits

87 commits (0.2%) · +0 / −0 lines · 20 authors

Led by Josh Wills (15 commits)

First commits: Josh Wills, Juliet Hougland, Frances Perry, Davor Bonaci, Pei He, Kenneth Knowles (+14 more)

Released: v0.3.20141216

2015STEADY

1,454 commits (3.0%) · +0 / −0 lines · 91 authors

Led by Ben Chambers (165 commits)

First commits: Ben Chambers, Max, Daniel Halperin, Tom White, Thomas Groh, Aljoscha Krettek (+67 more)

Released: v0.3.20150109, v0.3.20150210, v0.3.20150211, v0.3.20150227, v0.3.20150326 (+8 more)

2016STEADY

4,896 commits (10.1%) · +414,820 / −133,137 lines · 132 authors

Led by Kenneth Knowles (767 commits)

First commits: Petr Novotnik, Scott Wegner, Sela, Jean-Baptiste Onofré, Maximilian Michels, Jan Lukavsky (+83 more)

Released: v1.4.0, apache-dataflow-ancestor, OldDoFn, MOE, list

2017STEADY

6,164 commits (12.7%) · +430,659 / −167,003 lines · 198 authors

Led by Kenneth Knowles (697 commits)

First commits: mingmxu, Mergebot, Bill Neubauer, Jan Lukavský, Etienne Chauchot, David Moravek (+132 more)

Released: v-RC1-DupdateWorkingCopyVersions=false, v2.2.0-RC1, v2.2.0-RC2, v2.2.0-RC3, v2.2.0 (+1 more)

2018PEAKbusiest year

6,794 commits (14.0%) · +665,654 / −238,548 lines · 242 authors

Led by Kenneth Knowles (495 commits)

First commits: Andrew Pilloud, Vaclav Plajt, Rui Wang, Alexey Romanenko, Tim Robertson, Colm O hEigeartaigh (+148 more)

2019STEADY

5,603 commits (11.5%) · +371,616 / −146,805 lines · 280 authors

Led by Maximilian Michels (330 commits)

First commits: Kyle Weaver, Michal Walenia, Chad Dombrova, kirillkozlov, Brian Hulette, Kamil Wasilewski (+178 more)

Released: java-ulr-removal

2020STEADY

5,189 commits (10.7%) · +928,663 / −197,213 lines · 315 authors

Led by Robert Bradshaw (407 commits)

First commits: Piotr Szuberski, Damon Douglas, Sruthi Sree Kumar, danielxjd, Tyson Hamilton, Mark-Zeng (+192 more)

Released: dataflow_runner_v2, website-to-hugo, jupyterlab-sidepanel-v1.0.0

2021STEADY

3,934 commits (8.1%) · +319,136 / −129,037 lines · 274 authors

Led by Kyle Weaver (306 commits)

First commits: AydarZaynutdinov, Shehzaad Nakhoda, Jack McCluskey, Benjamin Gonzalez, Aydar Farrakhov, Sergey Kalinin (+149 more)

Released: testing, jupyterlab-sidepanel-v2.0.0

2022STEADY

4,015 commits (8.3%) · +542,610 / −164,073 lines · 282 authors

Led by Robert Bradshaw (396 commits)

First commits: Danny McCormick, bullet03, Yi Hu, Ahmed Abualsaud, Daniela Martín, Evgeny Antyshev (+164 more)

Released: jupyterlab-sidepanel-v3.0.0

2023STEADY

3,260 commits (6.7%) · +579,158 / −213,302 lines · 255 authors

Led by Robert Bradshaw (272 commits)

First commits: Vlado Djerek, Timur Sultanov, Bartosz Zablocki, magicgoody, Aleksandr Dudko, Celeste Zeng (+134 more)

2024STEADY

2,456 commits (5.0%) · +234,188 / −119,919 lines · 189 authors

Led by Robert Bradshaw (313 commits)

First commits: Jaehyeon Kim, Rohit Sinha, Andy Zhang, claudevdm, twosom, Francis O'Hara (+82 more)

2025STEADY

2,429 commits (5.0%) · +363,369 / −176,151 lines · 181 authors

Led by Yi Hu (179 commits)

First commits: Derrick Williams, Tarun Annapareddy, Abdelrahman Ibrahim, Enrique Calderon, Tanu Sharma, changliiu (+93 more)

Released: v2.64.0-RC00, v2.65.0-RC00, v2.66.0-RC00, v2.67.0-RC00, v2.68.0-RC00 (+2 more)

2026STEADY

2,373 commits (4.9%) · +384,390 / −132,663 lines · 193 authors

Led by Vitaly Terentyev (197 commits)

First commits: Elia LIU, ZIHAN DAI, junaiddshaukat, Subramanya V, HansMarcus01, Anish Mehta (+115 more)

Released: v2.71.0-RC00, v2.72.0-RC00, v2.73.0-RC00, v2.74.0-RC00, v2.75.0-RC00 (+2 more)