Hi Antoine, There are a couple of ongoing PRs in the parquet-format repo. However, some may take very long (e.g. core features) but some are only waiting for review (e.g. #166). I agree that solving the current situation of LZ4 is worth a parquet-format release but the ready PRs should also be included.
Practically any committer can work on a release. (See http://parquet.apache.org/documentation/how-to-release/ for details.) As per the process PMC members are only required to vote on the release. Regards, Gabor
