I was under the impression that a single-row Scan can use the bloom filter as well. Can anyone verify/refute?
On Thu, May 10, 2012 at 5:31 AM, Igal Shilman <ig...@wix.com> wrote: > I think that it is also worth mentioning, that Gets can be much more I/O > efficient then Scans if you have bloom filters enabled. > > On Thu, May 10, 2012 at 12:29 AM, Doug Meil > <doug.m...@explorysmedical.com>wrote: > > > > > Also, there is multi-Get support as of 0.90.x to further optimize the RPC > > calls if you need to make a bunch of calls. > > > > > > > > > > > > On 5/9/12 4:47 PM, "Jean-Daniel Cryans" <jdcry...@apache.org> wrote: > > > > >What Bryan said, also Scan(Get) is used internally in the region > > >server code so that's probably why that constructor exists. > > > > > >But as a user you need to create the scanner, do next() then close it > > >so using a straight Get saves 2 rpc. > > > > > >J-D > > > > > >On Wed, May 9, 2012 at 1:43 PM, Bryan Beaudreault > > ><bbeaudrea...@hubspot.com> wrote: > > >> Gets just boil down to single-row Scans. I believe the only reason to > > >>do > > >> Scan s = new Scan(Get) would be if you need to add extra options onto > > >>the > > >> get. Get's API is more simplified than Scan's. > > >> > > >> On Wed, May 9, 2012 at 4:19 PM, Kevin <kevin.macksa...@gmail.com> > > wrote: > > >> > > >>> Hi, > > >>> > > >>> From what I can tell, there are two ways of scanning a table in > HBase. > > >>>I'm > > >>> hoping to learn a bit by asking is the most efficient way to grab a > > >>>single > > >>> row from an HTable? > > >>> > > >>> One can ask the HTable directly by creating a Get object, or one can > > >>>create > > >>> a Scan object with a Get object and pass it along to the HTable. > > >>> > > >>> Maybe it doesn't matter. By looking at the source code I couldn't see > > >>>how > > >>> any one way might be faster/better than another. > > >>> > > >>> Thanks. > > >>> > > > > > > > > > >
