Use dfs -getmerge. By the way, if you just want text file format, "INSERT OVERWRITE LOCAL DIRECTORY '/tmp/aaa' SELECT ..." is good enough. You don't need to split the process into 2 steps.
Zheng On Thu, Jun 4, 2009 at 8:22 PM, Min Zhou <[email protected]> wrote: > So how do you copy them back? > use dfs -germerge or INSERT OVERWRITE LOCAL DIRECTORY? > > Thanks, > Min > > > On Thu, Jun 4, 2009 at 1:48 PM, Zheng Shao <[email protected]> wrote: > >> No, we would need to copy the file back from HDFS. But I think there is no >> overhead - we are doing the same thing as INSERT OVERWRITE LOCAL DIRECTORY, >> I think. >> >> Zheng >> >> >> On Wed, Jun 3, 2009 at 10:45 PM, Min Zhou <[email protected]> wrote: >> >>> Can external table stored at a local directory? >>> >>> >>> On Thu, Jun 4, 2009 at 1:42 PM, Zheng Shao <[email protected]> wrote: >>> >>>> You can first create an external table and then insert into that table. >>>> >>>> Zheng >>>> >>>> >>>> On Wed, Jun 3, 2009 at 10:31 PM, Min Zhou <[email protected]> wrote: >>>> >>>>> Hi all, >>>>> >>>>> Any helps? >>>>> >>>>> >>>>> thanks, >>>>> Min >>>>> -- >>>>> My research interests are distributed systems, parallel computing and >>>>> bytecode based virtual machine. >>>>> >>>>> My profile: >>>>> http://www.linkedin.com/in/coderplay >>>>> My blog: >>>>> http://coderplay.javaeye.com >>>>> >>>> >>>> >>>> >>>> -- >>>> Yours, >>>> Zheng >>>> >>> >>> >>> >>> -- >>> My research interests are distributed systems, parallel computing and >>> bytecode based virtual machine. >>> >>> My profile: >>> http://www.linkedin.com/in/coderplay >>> My blog: >>> http://coderplay.javaeye.com >>> >> >> >> >> -- >> Yours, >> Zheng >> > > > > -- > My research interests are distributed systems, parallel computing and > bytecode based virtual machine. > > My profile: > http://www.linkedin.com/in/coderplay > My blog: > http://coderplay.javaeye.com > -- Yours, Zheng
