Thanks ~ 2013/6/24 Harsh J <[email protected]>
> Hi, > > You may track https://issues.apache.org/jira/browse/MAPREDUCE-5269 for > progress on Reduce end checkpointing. > > On Sat, Jun 22, 2013 at 12:12 PM, 牛兆捷 <[email protected]> wrote: > > Hi Chris: > > I don't find the related checkpoint implementation for shuffle and reduce > > phase of MapReduce. > > Are the code open now? > > > > > > 2013/6/22 Chris Douglas <[email protected]> > > > >> The APIs for checkpointing are in branch-2, but support for the > >> capacity scheduler and the MapReduce implementation are making their > >> way through review. > >> > >> As of now, the checkpointing is for the shuffle and reduce phases, > >> only. Map checkpointing requires cooperation with the RecordReader > >> (i.e., the symmetric operation to create an InputSplit from a > >> RecordReader) which has not been implemented. -C > >> > >> On Thu, Jun 20, 2013 at 10:29 PM, 牛兆捷 <[email protected]> wrote: > >> > https://issues.apache.org/jira/browse/YARN-45 support work-preserve > >> > preemption > >> > > >> > Has the AM support container's state checkpoint now? > >> > Does the checkpoint support map, shuffle and reduce phase? > >> > > >> > -- > >> > *Sincerely,* > >> > *Zhaojie* > >> > * > >> > * > >> > > > > > > > > -- > > *Sincerely,* > > *Zhaojie* > > * > > * > > > > -- > Harsh J > -- *Sincerely,* *Zhaojie* * *
