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Topics: AI / ML Python Full archive →

The Wire · Showcase

JAX REVERTS BREAKING CHANGE, SYNCS XLA UPSTREAM

By RepoJournal · Filed · About Google

copybara-service Jinliang Wei jax authors
3 people shipped this
copybara-service @copybara-service 1 cited Jinliang Wei @jinliangwei 1 cited jax authors @Google-ML-Automation 1 cited

A changelist that hit production got rolled back twice in 12 hours, signaling either a critical regression or a coordination miss that JAX caught before it spread.

The JAX team reverted changelist 961233365 not once but twice, with copybara-service and Jinliang Wei both rolling back the same commit [1][2]. The identical reverts of 57df5685 suggest this wasn't a merge conflict or stale code, but a deliberate decision to kill something that landed. Simultaneously, the team pulled in a fresh XLA dependency pointing to upstream revision 7c3dd19 [3], which hints the problem may have been a version mismatch or an XLA API shift that broke on import. With only 2 commits and 1 PR across the period, this is focused work: undo what broke, sync what matters, move on.

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Action items

References

  1. [1] rollback of changelist 961233365. ↗ google/jax
  2. [2] rollback of changelist 961233365. google/jax
  3. [3] Update XLA dependency to use revision google/jax

Quick answers

What shipped in Google on August 10, 2026?
A changelist that hit production got rolled back twice in 12 hours, signaling either a critical regression or a coordination miss that JAX caught before it spread. In total, 2 commits and 1 pull requests landed.
Who contributed to Google on August 10, 2026?
3 developers shipped this update, including copybara-service, Jinliang Wei, and jax authors.
What were the notable Google updates?
rollback of changelist 961233365, rollback of changelist 961233365, and Update XLA dependency to use revision.

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