No, the stateless scanner does not support filters. Is this a requirement for your use case?
On Mon, Aug 11, 2014 at 7:02 AM, SiMaYunRui <myl...@hotmail.com> wrote: > Thanks Andrew. Does the stateless scan supports filter? I read the doc you > referenced, but seems that only the follow parameters are supported, filter > is not part of the list. > > > startrow - The start row for the scan. > endrow - The end row for the scan. > columns - The columns to scan. > starttime, endtime - To only retrieve columns within a specific range of > version timestamps, both start and end time must be specified. > maxversions - To limit the number of versions of each column to be > returned. > batchsize - To limit the maximum number of values returned for each call > to next(). > limit - The number of rows to return in the scan operation. > > > > > > > 发自 Windows 邮件 > > > > > > 发件人: Andrew Purtell > 发送时间: 2014年8月8日, 星期五 4:46 > 收件人: user@hbase.apache.org > > > > > > On Wed, Aug 6, 2014 at 11:20 PM, SiMaYunRui <myl...@hotmail.com> wrote: > > > Further investigation showsthat if I repeatedly fetch data very quick, > the > > latter scanner creations are very fast (< 100ms), but if there is > >1minute > > interval between two data fetching, the latter is slow. > > > > I am certain that it’s not caused by TCP/SSL handshake (fiddler proves > > that). So I believe there must be a resource reuse somewhere no matter in > > Rest service code or hbase server code. > > > Stargate functions as a client to the HBase cluster. Both the RPC client - > here, Stargate - and the RPC server - here, the RegionServer(s) - have > configurable intervals for keeping idle connections around. Either the > client or server will eventually drop the connection. Who does it depends > on the configured timeouts. You can increase the defaults but it would be > better not to hold scanner resources open. > > If you are using version 0.98, we have a new stateless scanning option that > avoids the setup costs of old style scanners. See > > https://hbase.apache.org/apidocs/org/apache/hadoop/hbase/rest/package-summary.html#operation_stateless_scanner > > > > -- > Best regards, > > - Andy > > Problems worthy of attack prove their worth by hitting back. - Piet Hein > (via Tom White) > -- Best regards, - Andy Problems worthy of attack prove their worth by hitting back. - Piet Hein (via Tom White)
