Thanks~ For reduce phase, if the reduce has finished all the input and began to run a algorithm, how to implement the checkpoint for it?
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* * *
