Thank you for your swift response! -SM
On Sun, Sep 21, 2008 at 11:15 PM, Qin Gao <[EMAIL PROTECTED]> wrote: > I think it will be written to disk. There will be no difference in output > format or flow with or without combiner. > > On Mon, Sep 22, 2008 at 12:08 AM, Sandy <[EMAIL PROTECTED]> wrote: > > > Just a quick clarification: > > > > The combiner function acts as an optimization between the map and the > > reduce > > phases. Is the output of the combiner phase stored in memory before being > > handed to reduce? Or is it written to disk and subsequently read from > disk > > by the reduce phase? > > > > > > Thanks in advance, > > > > -SM > > >
