hbase-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Erik Holstad <erikhols...@gmail.com>
Subject Re: Some HBase FAQ
Date Mon, 13 Apr 2009 16:10:14 GMT
Hi Aseem!
Not sure if you have had a look at the BigTable paper by google, great
bedtime reading material
to understand how HBase works.

On Mon, Apr 13, 2009 at 7:12 AM, Puri, Aseem <Aseem.Puri@honeywell.com>wrote:

> Hi
>
>            I am new HBase user. I have some doubts regards
> functionality of HBase. I am working on HBase, things are going fine but
> I am not clear how are things happening. Please help me by answering
> these questions.
>
>
>
> 1.      I am inserting data in HBase table and all regions get balanced
> across various Regionservers. But what will happens when data increases
> and there is not enough space in Regionservers to accommodate all
> regions. So I will like this that some regions in Regionserver and some
> are at HDFS but not on Regionserver or HBase Regioservers stop taking
> new data?





>
>
>
>
> 2.      When I insert data in HBase table, 3 to 4 mapfiles are generated
> for one category, but after some time all mapfiles combines as one file.
> Is this we call minor compaction actually?
>
>
>
> 3.      For my application where I will use HBase will have updates in a
> table frequently. Should is use some other database as a intermediate to
> store data temporarily like MySQL and then do bulk update on HBase or
> should I directly do updates on HBase. Please tell which technique will
> be more optimized in HBase?
>
>
>
> Thanks & Regards
>
> Aseem Puri
>
>

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