No Le 2 janv. 2012 08:44, "ravikumar visweswara" <talk2had...@gmail.com> a écrit :
> Thank You Naren. If key k1>k2 (lexicologicaly), will md5(k1) > md5(k2)?. > > - R > > > On Sun, Jan 1, 2012 at 7:07 PM, Narendra Sharma <narendra.sha...@gmail.com > > wrote: > >> A token is a MD5 hash (one way hash). You cannot compute the key given a >> token. You can however compute MD5 hash of your keys and compare them with >> tokens. >> >> -Naren >> >> >> On Sat, Dec 31, 2011 at 2:07 PM, ravikumar visweswara < >> talk2had...@gmail.com> wrote: >> >>> Hello All, >>> >>> I have requirement to copy data from cassandra to hadoop from/to a >>> specific key. This is supported in 1.0.0. But I am using cassandra version >>> 0.7.1 and hadoop version 20.2. >>> >>> In my mapreduce job(InputFormat class) i have an object of TokenRange. I >>> need to filter certain ranges based on some exclusion rules. >>> i have readable key range to include. Could some one help me on how to >>> convert start_token and end_token to readable format and compare with my >>> input keys (range)? >>> >>> I know that 1.0.0 have better capabilities to specify keyRanges in >>> hadoop mapreduce. But for now, i will have to work with 0.7.1 >>> >>> Thanks and Regards >>> Ravi >>> >>> >>> >> >> >> -- >> Narendra Sharma >> Software Engineer >> *http://www.aeris.com <http://www.persistentsys.com>* >> *http://narendrasharma.blogspot.com/* >> >> >> >
