Hi Do I can use the scan filter ? the HBase that we used is version 0.20.6.
jiajun On Mon, Dec 6, 2010 at 2:05 AM, Lars George <[email protected]> wrote: > Hi Hari, > > The filters are applied server side (aka predicate pushdown). If you > were to scan and skip you incur extra IO cost. Filters, as they are > implemented right now are simply skipping and therefore all they can > do is slightly improve a normal scan performance. In the future you > might get better performance as they are re-implemented as > Coprocessors. Also, depending on certain filter criteria we can > optimize scans by skipping entire store files (since we know it does > not certain keys or timestamp based values). > > Lars > > On Sun, Dec 5, 2010 at 6:39 PM, Hari Sreekumar <[email protected]> > wrote: > > Hi > > > > What are the differences between using a scan filter and simpli > > scanning and then filtering using if conditions? Any particular > > gotchas you need to be careful about while using filters extensively? > > > > Hari > > >
