You don't need to call readFields(), the FileStatus objects are already initialized. You should just be able to call the various getters to get the fields that you're interested in.
-Joey On Mon, Mar 5, 2012 at 9:03 AM, Piyush Kansal <piyush.kan...@gmail.com> wrote: > Harsh, > > When I trying to readFields as follows: > > FileStatus origFStatus[] = ipFs.listStatus( ip ); > DataInput dataIp; > origFStatus[ 0 ].readFields( dataIp ); > > I am getting a compilation error "variable dataIp might not have been > initialized". > > How do we initialize it? Is there a direct method by which I can get the > read the fields easily. > > > On Mon, Mar 5, 2012 at 7:49 AM, Piyush Kansal <piyush.kan...@gmail.com> > wrote: >> >> Thanks Harsh. It worked. >> >> >> On Mon, Mar 5, 2012 at 5:58 AM, Harsh J <ha...@cloudera.com> wrote: >>> >>> Piyush, >>> >>> On Mon, Mar 5, 2012 at 3:16 PM, Piyush Kansal <piyush.kan...@gmail.com> >>> wrote: >>> > Ques 1: >>> > ====== >>> > I have a HDFS directory which contains the o/p files of reducer. I want >>> > to >>> > read all the part-r-* files present in this directory. >>> > >>> > I have already tried following options as follows but no luck: >>> > - FileSystem.listStatus >>> > >>> > Can you please suggest how can I do it? >>> >>> Iterate over the FileStatus objects returned by listStatus (they'll be >>> in the right order), and read them one by one. Does that not work for >>> you? >>> >>> > Ques 2: >>> > ====== >>> > Since MultipleOutputs/MultipleOutputFormat is not there in 0.20.203, so >>> > can >>> > we achieve the same functionality provided by these classes. >>> >>> Upgrade to either 1.0.1 to get MultipleOutputs for new API (Was only >>> recently released with that backport from 0.21), or to any alternative >>> distributions that offer it back-ported, or perhaps switch back to >>> using the stable (old) API which is still recommended to use for MR. >>> >>> Alternatively, read >>> >>> http://wiki.apache.org/hadoop/FAQ#Can_I_write_create.2BAC8-write-to_hdfs_files_directly_from_map.2BAC8-reduce_tasks.3F >>> >>> -- >>> Harsh J >> >> >> >> >> -- >> Regards, >> Piyush Kansal >> > > > > -- > Regards, > Piyush Kansal > -- Joseph Echeverria Cloudera, Inc. 443.305.9434
