Mailing-List: contact user-help@hbase.apache.org; run by ezmlm
Precedence: bulk
Reply-To: user@hbase.apache.org
MIME-Version: 1.0
In-Reply-To: <CAHWw8+MH4BynsLjTRNcSwoAB+4+2B5HJ=9y5F7-jeiJ3O7c38w@mail.gmail.com>
References: <CAHWw8+MH4BynsLjTRNcSwoAB+4+2B5HJ=9y5F7-jeiJ3O7c38w@mail.gmail.com>
From: Ted Yu <yuzhihong@gmail.com>
Date: Wed, 2 Nov 2016 11:06:51 -0700
Message-ID: <CALte62wOQehPjrC6e+pftirTri9zh8KM1dw3rxOwXbZmFi2szw@mail.gmail.com>
Subject: Re: How can I achieve HBase row level atomicity?
To: "user@hbase.apache.org" <user@hbase.apache.org>
Content-Type: multipart/alternative; boundary=001a1148180a3b0d420540554ef0
archived-at: Wed, 02 Nov 2016 18:06:58 -0000

--001a1148180a3b0d420540554ef0
Content-Type: text/plain; charset=UTF-8

Were you including code in the image (which didn't come through) ?

MultiVersionConcurrencyControl is involved in answering your question.

See http://hbase.apache.org/book.html#hregion.scans

Cheers

On Wed, Nov 2, 2016 at 10:57 AM, Manjeet Singh <manjeet.chandhok@gmail.com>
wrote:

> Hi All
>
> I have ETL process for inserting data into hbase for this I have spark
> jobs which are responsible for reading data from kafka topics. so my
> question is if I have some rowkey already exist in hbase and I have 3 spark
> job running and they all try to update on same rowkey how hbase deal for
> atomicity?
>
> for more understanding i have 3 rowkey coming from 3 seprate spark job and
> all trying to update same rowkey which is already exist in hbase table.
>
> [image: Inline image 1]
>
> --
> luv all
>

--001a1148180a3b0d420540554ef0--