Not right now. It should be pretty simple to do though. We can expose the current JobConf via a static method in ExecMapper.
Zheng On Thu, Feb 25, 2010 at 7:52 AM, Todd Lipcon <[email protected]> wrote: > Zheng: is there a way to get at the hadoop conf variables from within a > query? If so, you could use mapred.task.id to get a unique string. > -Todd > > On Thu, Feb 25, 2010 at 12:42 AM, Zheng Shao <[email protected]> wrote: >> >> Since Hive runs many mappers/reducers in parallel, there is no way to >> generate a globally unique increasing row id. >> If you are OK with that, you can easily write a "non-deterministic" >> UDF. See rand() (or UDFRand.java) for example. >> >> Please open a JIRA if you plan to work on that. >> >> Zheng >> >> On Wed, Feb 24, 2010 at 6:47 PM, Weiwei Hsieh <[email protected]> >> wrote: >> > All, >> > >> > >> > >> > Could anyone tell me on how to generate a row id for a new record in >> > Hive? >> > >> > >> > >> > Many thanks. >> > >> > >> > >> > weiwei >> >> >> >> -- >> Yours, >> Zheng > > -- Yours, Zheng
