Which Version of Hadoop Should I Use?

[Bing Li <lb...@gmail.com>]

Dear all,

I am starting to learn how to use HBase. I am a little bit confused about
the version of Hadoop. Which one should I use?

According to the book, HBase - The Definitive Guide, Page. 47, it is said
that "The current version of HBase will only run on Hadoop 0.20.x."

But, in the page of http://hbase.apache.org/book/hadoop.html, it is said
"HBase will lose data unless it is running on an HDFS that has a durable
sync implementation. Hadoop 0.20.2, Hadoop 0.20.203.0, and Hadoop
0.20.204.0 DO NOT have this attribute. Currently only Hadoop versions
0.20.205.x or any release in excess of this version -- this includes hadoop
1.0.0 -- have a working, durable sync." If so, Hadoop 0.20.x can NOT be
used with the latest version HBase?

Now the version of HBase I am learning is 0.92. I noticed that a jar
file, hadoop-core-1.0.0.jar, was there. It seems that the HBase can run
with Hadoop 1.0?

Could you please give me a hand on this?

Thanks so much!

Best regards,
Bing

Re: Which Version of Hadoop Should I Use?

[Ted Yu <yu...@gmail.com>]

Using Hadoop 1.0 should be good.
Hadoop 0.22 also supports HBase fully.

Cheers

On Sat, Feb 4, 2012 at 8:45 AM, Bing Li <lb...@gmail.com> wrote:

> Dear all,
>
> I am starting to learn how to use HBase. I am a little bit confused about
> the version of Hadoop. Which one should I use?
>
> According to the book, HBase - The Definitive Guide, Page. 47, it is said
> that "The current version of HBase will only run on Hadoop 0.20.x."
>
> But, in the page of http://hbase.apache.org/book/hadoop.html, it is said
> "HBase will lose data unless it is running on an HDFS that has a durable
> sync implementation. Hadoop 0.20.2, Hadoop 0.20.203.0, and Hadoop
> 0.20.204.0 DO NOT have this attribute. Currently only Hadoop versions
> 0.20.205.x or any release in excess of this version -- this includes hadoop
> 1.0.0 -- have a working, durable sync." If so, Hadoop 0.20.x can NOT be
> used with the latest version HBase?
>
> Now the version of HBase I am learning is 0.92. I noticed that a jar
> file, hadoop-core-1.0.0.jar, was there. It seems that the HBase can run
> with Hadoop 1.0?
>
> Could you please give me a hand on this?
>
> Thanks so much!
>
> Best regards,
> Bing
>

Re: Which Version of Hadoop Should I Use?

[Stack <st...@duboce.net>]

On Sat, Feb 4, 2012 at 8:45 AM, Bing Li <lb...@gmail.com> wrote:
> But, in the page of http://hbase.apache.org/book/hadoop.html, it is said
> "HBase will lose data unless it is running on an HDFS that has a durable
> sync implementation. Hadoop 0.20.2, Hadoop 0.20.203.0, and Hadoop
> 0.20.204.0 DO NOT have this attribute. Currently only Hadoop versions
> 0.20.205.x or any release in excess of this version -- this includes hadoop
> 1.0.0 -- have a working, durable sync." If so, Hadoop 0.20.x can NOT be
> used with the latest version HBase?
>

You should go with the reference guide.  Its kept up to date (Its hard
to update a hard copy book post printing press).

St.Ack