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From "Liu Xianglong" <sallonch...@hotmail.com>
Subject Re: questions about hbase tables operations
Date Thu, 10 Sep 2009 14:36:46 GMT
Hi, Jean-Daniel Cryans. Thanks for you reply. You mean live web sites use 
three APIs. So I wander that how a search engine like Google works to 
correspond to the query. Do engineers implement a Map-Reduce program based 
these APIs to search in HBase and return the results to the user?


From: "Jean-Daniel Cryans" <jdcryans@apache.org>
Sent: Thursday, September 03, 2009 11:52 PM
To: <hbase-user@hadoop.apache.org>
Subject: Re: questions about hbase tables operations

> I know that PS use the REST API, probably others, and they have MR
> jobs. Stack could tell more.
> So a typical system using HBase has a lot of data that doesn't fit
> will inside a RDBMS. You have to shard, denormalize, break the joins,
> etc. So HBase can be used for a live web site via one of its API: the
> native Java, the Thrift and the REST API. You can do operations like
> increments, gets, puts, deletes and scans. If you need to batch
> process your data, you do it with MR. The Bigtable paper gives good
> examples of that kind of usage.
> J-D
> 2009/9/3 刘祥龙 <sallonchina@hotmail.com>:
>> I want to find out how the applications like powerset use HBase? Should
>> these applications work based on HBase's API and map-reduce or they use
>> other tools like pig/hive to process data?
>> Furthermore, what about live queries?
>> --------------------------------------------------
>> From: "Jean-Daniel Cryans" <jdcryans@apache.org>
>> Sent: Thursday, September 03, 2009 11:38 PM
>> To: <hbase-dev@hadoop.apache.org>; <hbase-user@hadoop.apache.org>
>> Subject: Re: questions about hbase tables operations
>>> This questions belongs to the user mailing list btw.
>>> I do not use Pig so I can't comment on it, but what will really do
>>> with HBase is making it easy to do batch processing on HBase tables.
>>> No live queries.
>>> What do you want to do with the shell? The commands proposed there are
>>> for admin purposes. What operations are you searching for?
>>> J-D
>>> 2009/9/3 刘祥龙 <sallonchina@hotmail.com>:
>>>> Hi, I want to make sure which tools can be used to query HBase tables,
>>>> like HBase shell. Is pig integrated with Hbase, so it can  support some
>>>> query and other operations like create\write\append to HBase tables.
>>>> I found PIG6(http://issues.apache.org/jira/browse/PIG-6) tried to solve
>>>> similar problems, but I don't know when this new feature and more 
>>>> similar
>>>> features will be released in new version of pig.
>>>> Also I want to be clear that how powerful of HBase shell. It seems that
>>>> there are not many operations, so if lots of data expected to store 
>>>> into
>>>> HBase, does it can work effectively. I am surveying on this problems. 
>>>> Does
>>>> anyone can help me? Thanks a lot!
>>>> Best Wishes!
>>>> _____________________________________________________________
>>>> Liu Xianglong

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