Mailing-List: contact hbase-user-help@hadoop.apache.org; run by ezmlm
Precedence: bulk
Reply-To: hbase-user@hadoop.apache.org
Received-SPF: pass (nike.apache.org: domain of nitayj@gmail.com designates
 74.125.92.26 as permitted sender)
DomainKey-Signature: a=rsa-sha1; c=nofws;
        d=gmail.com; s=gamma;
        h=mime-version:in-reply-to:references:date:message-id:subject:from:to
         :content-type;
        b=W1J/pfqHiopJTG4v1zKz/HZ3zr0nHLh5JWQisAR5RIXuM/tZ9hPHhaw4OSu0vEammz
         6FkGIxue5m2Cytp644vnxSEFS1gCgDVOO9+FfWOK172jWKHvtgVzN6A4dg57w/UTzdW9
         ajE/UOKfLvBwmmLw6igHst/jHR+AAkj7bwxT4=
MIME-Version: 1.0
In-Reply-To: 
 <OF01CE8CAA.EE6DB5C1-ON482575E8.00182B69-482575E8.00189CEF@tsmc.com>
References: 
 <OF01CE8CAA.EE6DB5C1-ON482575E8.00182B69-482575E8.00189CEF@tsmc.com>
Date: Thu, 2 Jul 2009 23:10:38 -0700
Message-ID: <82b0992a0907022310l550ff6d4p25abea9ada63aefe@mail.gmail.com>
Subject: Re: Does HBASE allow multiple clients write to the same table?
From: Nitay <nitayj@gmail.com>
To: hbase-user@hadoop.apache.org
Content-Type: multipart/alternative; boundary=0015175cb498ed9222046dc703bd

--0015175cb498ed9222046dc703bd
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit

Hi Fleming,

That warning is harmless. It should recover after such things. If you ever
see some fatal problems (crashes, data loss, corruption, etc) after such a
thing let us know.

HBase should handle multiple clients writing to the same table fine. You
will get better performance if they are writing to different regions (i.e.
random data), as then the load is split between multiple region serving
nodes.

-n

On Thu, Jul 2, 2009 at 9:28 PM, <y_823910@tsmc.com> wrote:

> Hi there,
>
> Now I use HTable to put my oracle table data to HBASE.
> In order to enhance the speed, I create a few HTable clients to put the
> data.
> It occured only some WARN like "WARN zookeeper.ClientCnxn: Exception
> closing session",
> not fetal error,evently I found there's no data increase in HBASE.
> Any HBASE setting about the client connection limitation?
> Or HBASE doesn't allow multiple clients write to the same table.
> Any suggestion?
> Thank you
>
> Fleming
>
>  ---------------------------------------------------------------------------
>                                                         TSMC PROPERTY
>  This email communication (and any attachments) is proprietary information
>  for the sole use of its
>  intended recipient. Any unauthorized review, use or distribution by anyone
>  other than the intended
>  recipient is strictly prohibited.  If you are not the intended recipient,
>  please notify the sender by
>  replying to this email, and then delete this email and any copies of it
>  immediately. Thank you.
>
>  ---------------------------------------------------------------------------
>
>
>
>

--0015175cb498ed9222046dc703bd--