Hi Suresh: Thanks for the information.
Given from what you write, it seems that YARN with MRv2 is required for full functionality. MRv1 is a separate install in current distributions, which is why I am asking about it. How does Trafodion decide to run the MapReduce job as MRv1 vs. MRv2 if both are installed? Thanks, Gunnar On Tue, Feb 2, 2016 at 1:50 PM, Suresh Subbiah <suresh.subbia...@gmail.com> wrote: > Hi, > > I don't think Trafodion requires YARN for most activity. > > For Hive table access, Trafodion uses Hive metadata access Java API and > libhdfs to actually scan the data file. Therefore YARN is not needed for > Hive access. > YARN is not needed for native Hbase or Trafodion table access too. > YARN is needed for backup/restore, since the HBase exportSnapshot class > Trafodion calls, used MapReduce to copy large snapshot files to/from the > backup location. > YARN is also needed for developer regressions as some vanilla Hive > commands are executed during the regression run. > For the last 2 lines I think both MRv1 and MRv2 is supported. > > Thanks > Suresh > > > On Tue, Feb 2, 2016 at 2:36 PM, Gunnar Tapper <tapper.gun...@gmail.com> > wrote: > >> Hi, >> >> Does Trafodion require YARN with MRv2 or is MRv1 supported, too? >> >> -- >> Thanks, >> >> Gunnar >> *If you think you can you can, if you think you can't you're right.* >> > > -- Thanks, Gunnar *If you think you can you can, if you think you can't you're right.*
