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From "ma qiang" <maqiang1...@gmail.com>
Subject Re: Connection Pool for HBase
Date Thu, 13 Mar 2008 16:30:09 GMT
I don't understand .  Why explicit connection pooling is no need ?
When we use HBase in some app such as search engine, we need to read
from table then give user a response.



On Fri, Mar 14, 2008 at 12:06 AM, Jim Kellerman <jim@powerset.com> wrote:
> You are correct. There is no need to implement explicit connection pooling.
>
>
>  ---
>  Jim Kellerman, Senior Engineer; Powerset
>
>
>  > -----Original Message-----
>  > From: Goel, Ankur [mailto:Ankur.Goel@corp.aol.com]
>
> > Sent: Thursday, March 13, 2008 12:29 AM
>  > To: hbase-user@hadoop.apache.org
>
>
> > Subject: RE: Connection Pool for HBase
>  >
>  > Is it a known issue filed in JIRA ? What's the issue number ?
>  >
>  > So assuming that this bug is fixed, there isn't a need to
>  > implement explicit connection pooling, right?
>  >
>  > Thanks
>  > -Ankur
>  >
>  > -----Original Message-----
>  > From: Jim Kellerman [mailto:jim@powerset.com]
>  > Sent: Wednesday, March 12, 2008 10:04 PM
>  > To: hbase-user@hadoop.apache.org
>  > Subject: RE: Connection Pool for HBase
>  >
>  > We do have a connection pool in HTable, however we were
>  > looking at a bug yesterday that suggested that some part of
>  > it may not be thread safe (although it is supposed to be).
>  >
>  > ---
>  > Jim Kellerman, Senior Engineer; Powerset
>  >
>  >
>  > > -----Original Message-----
>  > > From: Goel, Ankur [mailto:Ankur.Goel@corp.aol.com]
>  > > Sent: Wednesday, March 12, 2008 6:22 AM
>  > > To: hbase-user@hadoop.apache.org
>  > > Subject: Connection Pool for HBase
>  > >
>  > >
>  > >  Hi Folks,
>  > >           Do we have a connection pool implementation for Hbase.
>  > > Basically I want to be able to write to Hbase from different
>  > > application threads.
>  > >
>  > > Also, how is synchronisation taken care of if multiple
>  > threads try to
>  > > read/write to the same table ?
>  > >
>  > > Thanks
>  > > -Ankur
>  > >
>  > >
>  > > No virus found in this incoming message.
>  > > Checked by AVG.
>  > > Version: 7.5.518 / Virus Database: 269.21.7/1327 - Release
>  > > Date: 3/12/2008 1:27 PM
>  > >
>  > >
>  >
>  > No virus found in this outgoing message.
>  > Checked by AVG.
>  > Version: 7.5.518 / Virus Database: 269.21.7/1327 - Release Date:
>  > 3/12/2008 1:27 PM
>  >
>  >
>  > No virus found in this incoming message.
>  > Checked by AVG.
>  > Version: 7.5.518 / Virus Database: 269.21.7/1327 - Release
>  > Date: 3/12/2008 1:27 PM
>  >
>  >
>
>  No virus found in this outgoing message.
>  Checked by AVG.
>  Version: 7.5.518 / Virus Database: 269.21.7/1327 - Release Date: 3/12/2008 1:27 PM
>
>

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