Hi all, I got it! # hadoop checknative -a [...] ISA-L: true /lib64/libisal.so.2 [...]
For the record, the key was to first install Intel ISA-L, then build hadoop on the 'bare metal' instead of the docker container. I built and installed an Intel ISA-L RPM as described here here https://github.com/daos-stack/isa-l . Then (for CentOS 7) 'gradlew hadoop-pkg' (bare metal) instead of 'gradlew hadoop-pkg-ind' (docker container). I had to install some build-depends by trial and error. I'm sure there is somewhere which lists these (a Dockerfile?) but I couldn't find it.
Thanks for all you work devs! C.
