On 1., you should update. Million things fixed since TRUNK (Should be an RC in next day or so if you want to wait for that).
On 2., yes. St.Ack On Wed, Jul 29, 2009 at 9:11 AM, llpind <[email protected]> wrote: > > Thanks Ryan, that is helpful. > > couple questions: > > 1. Will this work on .20 alpha, or do I need to be on trunk? > 2. When we say read operations, we are also talking about scanner > performance right? not just straight Gets? > > > > > Ryan Rawson wrote: > > > > Use the shell: > > > > major_compact 'table' > > > > good luck! > > > > On Tue, Jul 28, 2009 at 3:03 PM, llpind<[email protected]> wrote: > >> > >> major_compact from the web UI by clicking on the HBase table then > >> clicking > >> Compact? > >> > >> Thanks > >> > >> Ryan Rawson wrote: > >>> > >>> Hi, > >>> > >>> You should enable LZO compression. All performance goes up, both read > >>> and write. > >>> > >>> Follow the instructions to get booted basic: > >>> http://wiki.apache.org/hadoop/UsingLzoCompression > >>> > >>> Once you have your cluster restarted with the new jars and native > >>> libs, disable the tables. Then alter them to include the > >>> compression=>'LZO' flag. Re-enable them. Kick off a major_compact on > >>> the table and the new files will be in LZO. > >>> > >>> -ryan > >>> > >>> On Tue, Jul 28, 2009 at 2:23 PM, llpind<[email protected]> wrote: > >>>> > >>>> Hey, > >>>> > >>>> I have a couple tall tables (~ 120M rows each with small columns). I > >>>> was > >>>> wondering what type of read performance I can expect using LZO > >>>> compression? > >>>> > >>>> Also, is there a way to enable compression on an existing HBase table, > >>>> or > >>>> do > >>>> I have to drop, recreate, and reload the entire data? > >>>> > >>>> Thanks > >>>> -- > >>>> View this message in context: > >>>> > http://www.nabble.com/LZO-compression-in-HBase-tp24708137p24708137.html > >>>> Sent from the HBase User mailing list archive at Nabble.com. > >>>> > >>>> > >>> > >>> > >> > >> -- > >> View this message in context: > >> http://www.nabble.com/LZO-compression-in-HBase-tp24708137p24708714.html > >> Sent from the HBase User mailing list archive at Nabble.com. > >> > >> > > > > > > -- > View this message in context: > http://www.nabble.com/LZO-compression-in-HBase-tp24708137p24722547.html > Sent from the HBase User mailing list archive at Nabble.com. > >
