hbase-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Upendra Yadav <upendra1...@gmail.com>
Subject Re: HBase read operation document/help...
Date Tue, 25 Feb 2014 19:50:36 GMT
Thanks Ted Yu...
I will go through these document...


On Wed, Feb 26, 2014 at 12:54 AM, Ted Yu <yuzhihong@gmail.com> wrote:

> You may have read http://hbase.apache.org/book.html#perf.reading
>
> For BlockCache, see this blog:
> http://www.n10k.com/blog/blockcache-101/
>
> Cheers
>
>
> On Tue, Feb 25, 2014 at 11:03 AM, Upendra Yadav <upendra1024@gmail.com
> >wrote:
>
> > I have go through no. of documents/slides about HBase read/get
> operation...
> > But I have lot of broken links and question to clear view about how hbase
> > read operation happen...
> >
> > Like....
> > Client Communicate to zookeeper and get region server where -ROOT- table
> > region reside...(And this is in memory)
> >
> > Then getting region server location for .META table region (And this is
> in
> > memory)
> >
> > Then location of region server where region of user table reside by
> > checking start and end rowkey with given GET operation rowkey...
> >
> > then will search 1st in memstore.... if found then return data
> > else
> > BlockCache.... if not then BloomFilter if negative then return not
> > found.... else
> >
> > read from hfile....(how i don't know.. please help me)
> >
> > Bloomfilter and BlockCache update and return data...
> >
> > Is this correct... Please suggest me some good document...
> >
> > Still i have doubt ... how BlockCache LRU works...
> >
>

Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message