repodata - xz

[poma]

f20:

*filelists.sqlite.bz2      3.5 M
*filelists.xml.gz          3.3 M
*primary.sqlite.bz2        2.7 M
*primary.xml.gz            1.3 M
*other.sqlite.bz2          1.3 M
*other.xml.gz            964   K
*Fedora-20-comps.xml     906   K
*Fedora-20-comps.xml.gz  210   K
repomd.xml                 3.6 K


rawhide:

*filelists.xml.gz         28   M  <-  xz?
*filelists.sqlite.xz      25   M
*primary.sqlite.xz        17   M
*primary.xml.gz           10   M  <-  xz?
*other.sqlite.xz           7.5 M
*other.xml.gz              5.8 M  <-  xz?
*prestodelta.xml.xz        2.9 M
*comps-rawhide.xml         1.6 M  <-  ?
*comps-rawhide.xml.xz    230   K
repomd.xml                 4.2 K  <-  xz?


Why aren't all compressed with the xz, in rawhide?
Why two *comps* with the same original checksums?


poma