CDH 5.2.1 (0.98-based) has HBASE-10648. -Vladimir
On Tue, Jan 27, 2015 at 11:58 AM, Gaurav Agarwal <gaurav130...@gmail.com> wrote: > Yes that's what i wanted. Thanks to both of you. so in the current version > of Hbase i can't use this feature of memorystore. > > On Wed, Jan 28, 2015 at 1:17 AM, Ted Yu <yuzhih...@gmail.com> wrote: > > > Thanks Lars for chiming in. > > > > Gaurav: > > See the following for details: > > HBASE-10648 Pluggable Memstore > > > > Cheers > > > > On Tue, Jan 27, 2015 at 11:43 AM, lars hofhansl <la...@apache.org> > wrote: > > > > > You can plug in your own implementation a memstore if that is what you > > > mean. This is supported from 1.0 onwards (i.e. not in a released > version > > of > > > HBase, yet, but soon).If you can decide what to do at the time a data > > item > > > is added you can also implement this via coprocessor hooks, for that > > take a > > > look at RegionObserver.java. > > > > > > -- Lars > > > From: Gaurav Agarwal <gaurav130...@gmail.com> > > > To: dev@hbase.apache.org > > > Sent: Tuesday, January 27, 2015 11:14 AM > > > Subject: Re: Memstore customize > > > > > > di yiu want me to explain in better way > > > > > > > > > > > > On 1/28/15, Gaurav Agarwal <gaurav130...@gmail.com> wrote: > > > > Currently If i will store anything into Hbase table , I can directly > > use > > > > HBASE api to store the data into table. Internally first data will be > > > store > > > > into memoryStore and then it will be flushed as HFile. > > > > > > > > Now instead of storing the data directly into Htable , Can i store > the > > > data > > > > into Memorystore with the help of Store Api and perform some > operations > > > > there so that will do other operations that we required apart from > > > sorting > > > > . It will flush into HFILE when the memory store size is full. > > > > > > > > Will it be possible. > > > > > > > > Thanks > > > > > > > > On Tue, Jan 27, 2015 at 11:53 PM, Ted Yu <yuzhih...@gmail.com> > wrote: > > > > > > > >> You mean skipping the HTable API ? > > > >> > > > >> Can you tell us more about your use case ? > > > >> > > > >> Cheers > > > >> > > > >> On Tue, Jan 27, 2015 at 10:20 AM, Gaurav Agarwal < > > > gaurav130...@gmail.com> > > > >> wrote: > > > >> > > > >> > Currently hbase use memstore to store the information before > > flushing > > > >> > it > > > >> to > > > >> > hFILE. > > > >> > > > > >> > Is there any way that i can use the Memstore to write my own key > > value > > > >> pair > > > >> > and then it will get flush that into HFILE. Mean to say can we use > > > >> MemStore > > > >> > to use it in our own way. > > > >> > > > > >> > Thanks > > > >> > > > > >> > > > > > > > > > > > > > > > > > > >
