Hi all,
I've installed and upgraded to Hadoop 3.2.2 using Bigtop's current
development branch. (thanks devs!)
I'm now stepping through the instructions for activating erasure
coding here:
https://hadoop.apache.org/docs/r3.2.2/hadoop-project-dist/hadoop-hdfs/HDFSErasureCoding.html
One thing those instructions recommends is installing Intel ISA-L. I
built and installed an RPM from here https://github.com/daos-stack/isa-l
Unfortunately the 'checknative' command indicates this library is not
detected:
hadoop checknative -a
[....]
erasurecode.ErasureCodeNative: ISA-L support is not available in your
platform... using builtin-java codec where applicable
[...]
ISA-L: false libhadoop was built without ISA-L
[...]
Does that message imply that libhadoop needs to be rebuilt with
different flags? Or is it misleading and instead hadoop is just not
finding the ISA-L libraries?
Thanks!
Chad.
