Support generic Hadoop Compatible Filesystem

This is a shortened version of PR #358, with focus on filesystem only.
Is lustre a supported FS, it's similar to gluster and ceph as it's a
distributed posix filesystem.
On Sep 5, 2014 3:36 PM, "Huamin Chen" <notifications@github.com> wrote:

> In core/src/main/java/tachyon/UnderFileSystemHdfs.java:
>
> >
> > +    // Setting Hadoop compatible filesystem (HCFS) properties in command argument is not scalable
> > +    // for some HCFS e.g. ceph, that has numerous parameters.
> > +    // Providing a hadoop core-site.xml that is required for this type of underfs.
> > +    tConf.addResource("core-site.xml");
>
> when hadoop uses tachyon and tachyon has a under fs, we have two
> core-site.xml, that's going to be a source of confusion
>
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> <https://github.com/amplab/tachyon/pull/388/files#r17192876>.
>