+1 (binding) I agree that the spec wording and doc organization still need more work but they are not blocking. Happy to see that ALP is finally moving forward with a vote!
On Wed, Jul 22, 2026 at 4:42 AM Julien Le Dem <[email protected]> wrote: > +1 Thank you Prateek for your leadership > > On Mon, Jul 20, 2026 at 6:46 AM PRATEEK GAUR <[email protected]> wrote: > > > Hello everyone, > > > > This is a vote to add ALP (Adaptive Lossless floating-Point) as a new > > encoding in Parquet, as discussed in the design document and proposal > pull > > request. > > > > We've had discussions on this in the design document ( > > > https://docs.google.com/document/d/1xz2cudDpN2Y1ImFcTXh15s-3fPtD_aWt/edit) > > and the proposal pull request ( > > https://github.com/apache/parquet-format/pull/557), as well as the > > discussion thread ( > > https://lists.apache.org/thread/tjtln1mmjqfoql1ls2dw9xpdk91r1909). > > > > Reference implementations are available in > > > > - parquet-java (https://github.com/apache/parquet-java/pull/3397) > > - Arrow C++ (https://github.com/apache/arrow/pull/48345) > > - Arrow Go (https://github.com/apache/arrow-go/pull/704). > > - Test artifacts : https://github.com/apache/parquet-testing/pull/100 > > > > Cross-language compatibility is verified: the Arrow C++ decoder reads > > Java-written data bit, covering V1 and V2 pages, multiple vector sizes, > and > > several real datasets — zero mismatches. > > > > This vote will be open for at least 72 hours: > > > > [ ] +1: Add ALP encoding to the Parquet spec > > [ ] +0: Not going to block, but prefer . . . > > [ ] -1: Do not add ALP to Parquet > > > > Thank you for all the feedback, input, and involvement in developing this > > new encoding! > > > > Thanks, > > Prateek Gaur > > >
