Data block encoding enables block cache to hold more entries, thereby lifting performance.
You can find coverage of data block encoding in this wiki as well: https://blogs.apache.org/hbase/ Cheers On Sun, Jun 15, 2014 at 2:00 PM, Tom Brown <[email protected]> wrote: > I don't mean to hijack the thread, but this question seems relevant: > > Does data block encoding also help performance, or does it just enable more > efficient compression? > > --Tom > > On Saturday, June 14, 2014, Guillermo Ortiz <[email protected]> wrote: > > > I would like to see the times they got doing some scans or get with the > > benchmark about compression and block code to figure out how much time to > > save if your data are smaller but you have to decompress them. > > > > El sábado, 14 de junio de 2014, Kevin O'dell <[email protected] > > <javascript:;>> > > escribió: > > > > > Hi Jeremy, > > > > > > I always recommend turning on snappy compression, I have ~20% > > > performance increases. > > > On Jun 14, 2014 10:25 AM, "Ted Yu" <[email protected] <javascript:;> > > <javascript:;>> > > > wrote: > > > > > > > You may have read Doug Meil's writeup where he tried out different > > > > ColumnFamily > > > > compressions : > > > > > > > > https://blogs.apache.org/hbase/ > > > > > > > > Cheers > > > > > > > > > > > > On Fri, Jun 13, 2014 at 11:33 AM, jeremy p < > > > [email protected] <javascript:;> <javascript:;> > > > > > > > > > wrote: > > > > > > > > > Thank you -- I'll go ahead and try compression. > > > > > > > > > > --Jeremy > > > > > > > > > > > > > > > On Fri, Jun 13, 2014 at 10:59 AM, Dima Spivak < > [email protected] > > <javascript:;> > > > <javascript:;>> > > > > > wrote: > > > > > > > > > > > I'd highly recommend it. In general, compressing your column > > families > > > > > will > > > > > > improve performance by reducing the resources required to get > data > > > from > > > > > > disk (even when taking into account the CPU overhead of > compressing > > > and > > > > > > decompressing). > > > > > > > > > > > > -Dima > > > > > > > > > > > > > > > > > > On Fri, Jun 13, 2014 at 10:35 AM, jeremy p < > > > > > [email protected] <javascript:;> <javascript:;> > > > > > > > > > > > > > wrote: > > > > > > > > > > > > > Hey all, > > > > > > > > > > > > > > Right now, I'm not using compression on any of my tables, > because > > > our > > > > > > data > > > > > > > doesn't take up a huge amount of space. However, I would turn > on > > > > > > > compression if there was a chance it would improve HBase's > > > > performance. > > > > > > By > > > > > > > performance, I'm talking about the speed with which HBase > > responds > > > to > > > > > > > requests and retrieves data. > > > > > > > > > > > > > > Should I turn compression on? > > > > > > > > > > > > > > --Jeremy > > > > > > > > > > > > > > > > > > > > > > > > > > > >
