Hi Ishwar, You can implement a custom MapRunner and retrieve the position from the reader before calling your map function. Be aware though, that for block compressed files, the position returned represents block start position, not the individual record position.
Ahad. On Thu, Oct 8, 2009 at 4:23 PM, ishwar ramani <rvmish...@gmail.com> wrote: > Hi, > > I need to get the position of the key being processed in a mapper task. > My inputFile is a sequence file .... > > I tried the Context, but the best i could get was the inputsplit > position and the > file name .... > > > My other option is to start recording the pos in the key value while > generating > the sequence file. > But that would mean rewriting all the files i already have :( > > any thoughts? > > ishwar >
