Is there any documentation anywhere regarding the differences between PREFIX, DIFF and FAST_DIFF?
2013/4/3 prakash kadel <[email protected]>: > thank you very much. > i will try with snappy compression with data_block_encoding > > > > > On Wed, Apr 3, 2013 at 11:21 PM, Kevin O'dell <[email protected]>wrote: > >> Prakash, >> >> Yes, I would recommend Snappy Compression. >> >> On Wed, Apr 3, 2013 at 10:18 AM, Prakash Kadel <[email protected]> >> wrote: >> > Thanks, >> > is there any specific compression that is recommended of the use >> case i have? >> > Since my values are all null will compression help? >> > >> > I am thinking of using prefix data_block_encoding.. >> > Sincerely, >> > Prakash Kadel >> > >> > >> > On Apr 3, 2013, at 10:55 PM, Ted Yu wrote: >> > >> >> You should use data block encoding (in 0.94.x releases only). It is >> helpful >> >> for reads. >> >> >> >> You can also enable compression. >> >> >> >> Cheers >> >> >> >> >> >> On Wed, Apr 3, 2013 at 6:42 AM, Prakash Kadel <[email protected] >> >wrote: >> >> >> >>> Hello, >> >>> I have a question. >> >>> I have a table where i store data in the column qualifiers(the >> values >> >>> itself are null). >> >>> I just have 1 column family. >> >>> The number of columns per row is variable (1~ few thousands) >> >>> >> >>> Currently i don't use compression or the data_block_encoding. >> >>> >> >>> Should i? >> >>> I want to have faster reads. >> >>> >> >>> Please suggest. >> >>> >> >>> >> >>> Sincerely, >> >>> Prakash Kadel >> > >> >> >> >> -- >> Kevin O'Dell >> Systems Engineer, Cloudera >>
