  We investigate the impact of the high precision ATLAS and CMS 7 TeV
measurements of inclusive jet production on the MMHT global PDF analysis at
next-to-next-to-leading order (NNLO). This is made possible by the recent
completion of the long-term project to calculate the NNLO corrections to the
hard cross section. We find that a good description of the ATLAS data is not
possible with the default treatment of experimental systematic errors, and
develop a simplified solution that retains the dominant physical information of
the data. We then investigate the fit quality and the impact on the gluon PDF
central value and uncertainty when the ATLAS and CMS data are included in a
MMHT fit. We consider both common choices for the factorization and
renormalization scale, namely the inclusive jet transverse momentum, $p_\perp$,
and the leading jet $p_\perp$, as well as the different jet radii for which the
ATLAS and CMS data are made available. We find that the impact of these data on
the gluon is relatively insensitive to these inputs, in particular the scale
choice, while the inclusion of NNLO corrections tends to improve the data
description somewhat, and gives a qualitatively similar though not identical
impact on the gluon in comparison to NLO.
