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From "Zhong, Andy" <Sheng.Zh...@searshc.com>
Subject RE: Hadoop Version
Date Thu, 23 Jun 2011 22:05:45 GMT
Joey, Great, thank you for your cross-reference! - Andy Zhong 

-----Original Message-----
From: Joey Echeverria [mailto:joey@cloudera.com] 
Sent: Thursday, June 23, 2011 11:13 AM
To: user@hbase.apache.org
Subject: Re: Hadoop Version

Andy,

That's a typical solution. The key is that the hadoop-core jar in you
HDFS install has to match the hadoop-core jar in HBase's lib directory.
The -append version that ships with HBase is needed to prevent data
loss.

-Joey

On Thu, Jun 23, 2011 at 11:54 AM, Zhong, Andy <Sheng.Zhong@searshc.com>
wrote:
> We have tried Hbase Upgrade from 0.20.3 to 0.90.2 on Hadoop 0.20.2 for

> a real time app, but had to replace hadoop-core with 
> hadoop-core-0.20-append-r1056497.jar shipped from Hbase 0.90.2 
> otherwise Hbase won't start as compatible issue. This is based on 
> Michael Noll's suggestion, but not sure if it's a valid option, anyone

> else tried that, and will propose any other issue?
>
> Thanks,
> Andy Z.
>
> -----Original Message-----
> From: Joey Echeverria [mailto:joey@cloudera.com]
> Sent: Thursday, June 23, 2011 7:59 AM
> To: user@hbase.apache.org
> Subject: Re: Hadoop Version
>
> It will "work", however, hadoop-.20-203 doesn't have append support so

> there is the risk of data loss.
>
> See http://hbase.apache.org/book/hadoop.html for more details on 
> Hadoop versions.
>
> -Joey
>
> On Thu, Jun 23, 2011 at 6:32 AM, Saumitra Chowdhury 
> <saumitra@smartitengineering.com> wrote:
>> Dear all,
>>
>> We are using Hbase 90.2 with hadoop-0.20. Will it be any problem if 
>> we
>
>> upgrade to hadoop-0.20.203 in real time server?
>> In fact I wanna know that have anyone tested it with hbase 90.x 
>> series? I have heard some problem about hadoop-0.21 but heard nothing

>> about this version.
>>
>> BR
>> Saumitra Chowdhury
>>
>
>
>
> --
> Joseph Echeverria
> Cloudera, Inc.
> 443.305.9434
>



--
Joseph Echeverria
Cloudera, Inc.
443.305.9434

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