----- Original Message ----- From: "M. C. Srivas" <mcsri...@gmail.com> Date: Sunday, November 6, 2011 3:13 am Subject: Re: FileSystem contract of listStatus To: common-dev@hadoop.apache.org
> On Thu, Nov 3, 2011 at 4:27 AM, Uma Maheswara Rao G 72686 < > mahesw...@huawei.com> wrote: > > > Yes, i remember this issue filed by Harsh recently. > > GlobStatus will sort the results and return. May be we can fix for > > listStatus in the same way. > > > > Not a good idea to sort needlessly. That's why we have > globStatus() and > listStatus() ... those who want a sorted list can use globStatus(). globStatus is for pattern matching and listStatus is for listing all the files in given directory. > > > > > > > Regards, > > Uma > > ----- Original Message ----- > > From: Harsh J <ha...@cloudera.com> > > Date: Thursday, November 3, 2011 7:52 am > > Subject: Re: FileSystem contract of listStatus > > To: common-dev@hadoop.apache.org > > > > > Perhaps fixes against this can be covered as part of > > > https://issues.apache.org/jira/browse/HADOOP-7659 > > > > > > On 03-Nov-2011, at 5:44 AM, Ted Dunning wrote: > > > > > > > I think that the API docs actually say globStatus is ordered and > > > leave the > > > > ordering semantics for listStatus undefined. > > > > > > > > > > > > > > http://hadoop.apache.org/common/docs/r0.20.2/api/org/apache/hadoop/fs/FileSystem.html#globStatus(org.apache.hadoop.fs.Path)> > > > > > > > > > > > > http://hadoop.apache.org/common/docs/r0.20.2/api/org/apache/hadoop/fs/RawLocalFileSystem.html#listStatus(org.apache.hadoop.fs.Path)> > > > > > > On Wed, Nov 2, 2011 at 4:57 PM, Noah Watkins > > > <jayh...@soe.ucsc.edu> wrote: > > > > > > > >> ----- Original Message ----- > > > >>> From: "Eli Collins" <e...@cloudera.com> > > > >>> > > > >>> RawLocalFileSystem uses Java's File#list which has "no > > > guarantee that > > > >>> the name strings in the resulting array will appear in any > > > specific>>> order; they are not, in particular, guaranteed to > > > appear in > > > >>> alphabetical order.", however the FSContractBaseTest isn't run > > > against>>> local file systems which is why it probably never > came up. > > > >> > > > >> Thanks Eli. We are cleaning up the unit tests for Ceph and the > > > unit tests > > > >> use an emulation layer built on top of the local FS. We ran > > > into this > > > >> ordering > > > >> issue. Getting a fix to this would be nice. > > > >> > > > >> Thanks! > > > >> -Noah > > > >> > > > > > > > > > Regards, Uma
