Hi Steve, Check out https://issues.apache.org/jira/browse/HADOOP-8886 for the KFS removal. Seems relevant to your question here.
On Wed, Oct 10, 2012 at 12:52 AM, Steve Loughran <ste...@hortonworks.com> wrote: > On 5 October 2012 18:27, Thilee Subramaniam <thi...@quantcast.com> wrote: > >> We at Quantcast have released QFS 1.0 (Quantcast File System) to open >> source. This is based on the KFS 0.5 (Kosmos Distributed File System), >> a C++ distributed filesystem implementation. KFS plugs into Apache >> Hadoop via the 'kfs' shim that is part of Hadoop codebase. >> >> QFS has added support for permissions, and also, provides fault tolerance >> through Reed-Solomon encoding as well as replication. There are also a >> number of performance and stability improvements, including a rewrite of >> the client library to allow parallel concurrent I/Os. Going forward, new >> releases of KFS will come from QFS. >> >> > Does this mean the kfs plugin can go from the apache tree? > > > One problem that we've always had with KFS is that nobody ever tested the > filesystem, and it was inevitably out of sync with what was in KFS. > > Have you considered just pulling the kfs lib out and releasing the bridge > classes yourself? It's what the other FS suppliers do, as it gives them > more control over the libraries, including the ability to release more > often. > > -steve -- Harsh J
