Hi all, The voted on format change PR has been updated using Antoine's and Andrew's feedback. I would like to change this vote to now be on commit 70b3023. If you would like to see the difference from the previous proposal see [1] or see the current PR state [2].
I propose that people who already voted take another look at the PR and revert their vote if necessary. This vote will be open for at least 72 hours. [1] https://github.com/apache/parquet-format/pull/624/changes/70b302340e875b76644808e4f5df081e4e04f831 [2] https://github.com/apache/parquet-format/pull/624/changes Best, Rok On Wed, Nov 4, 2026 at 7:12 PM Alkis Evlogimenos via dev < [email protected]> wrote: > +1 (non-binding) > > On Wed, Nov 4, 2026 at 7:26 AM Divjot Arora via dev < > [email protected]> > wrote: > > > +1 (non-binding), thanks for pushing this forward Rok! > > > > On Wed, Nov 4, 2026 at 01:01 Rok Mihevc <[email protected]> wrote: > > > > > Hi all, > > > > > > I'd like to start a vote to add the FINITE_VECTOR logical type to the > > > Parquet format, as specified in parquet-format PR 624 [1] (at commit > > > 0596fde). > > > If you'd like to discuss this proposal please use the active discussion > > > thread [2]. > > > > > > FINITE_VECTOR is roughly: > > > - annotates the same structure used for LIST, giving unaware readers a > > > fallback > > > - every non-null vector has exactly num_elements elements > > > - elements are required (non-null) and finite (no NaN, null, +Inf or > > -Inf) > > > > > > Writers must enforce these rules, and readers may rely on them. This > > > proposal does not add a new physical representation and doesn't > preclude > > > one later. > > > > > > This came out of active discussions on the list [2][3] and the > community > > > syncs. The type was renamed from VECTOR to FINITE_VECTOR to indicate > it's > > > specific requirements and to leave room for a more general vector type. > > > > > > Implementations: > > > - parquet-java: [4] > > > - parquet-cpp: [5] > > > > > > This vote will be open for at least 72 hours. > > > > > > [ ] +1: Add FINITE_VECTOR to the Parquet spec > > > [ ] +0: Not going to block, but prefer ... > > > [ ] -1: Do not add FINITE_VECTOR to Parquet because ... > > > > > > Thanks to everyone who took part in the discussions and reviews! > > > > > > Rok > > > > > > [1] https://github.com/apache/parquet-format/pull/624 > > > [2] https://lists.apache.org/thread/kgmgn2vmrz49thbfhv8b66lglsyd81xt > > > [3] https://lists.apache.org/thread/xot5f3ghhtc82n1bf0wdl9zqwlrzqks3 > > > [4] https://github.com/apache/parquet-java/pull/3876 > > > [5] https://github.com/apache/arrow/pull/55348 > > > > > >
