As I understand, many iterative applications don't require key value input/ output and additionally need random access (read/ write) to particular file. I/O interface e.g. mpi may increase flexibility here.
https://issues.apache.org/jira/browse/MAPREDUCE-2911 On 25 March 2012 10:01, Praveen Sripati <[email protected]> wrote: > Hi, > > For Hama there are limited input formats > > CombineFileInputFormat, FileInputFormat, NullInputFormat, > SequenceFileInputFormat, TextInputFormat > > Does it make sense to have to have more input formats? I was thinking > InputFormats for Graph Databases. > > Any feedback for the different input formats is welcome. > > I quickly glanced Giraph and Hadoop and they have more InputFormats which > makes it easy to plug them with external systems. > > Praveen
