Dear all .

We are going to setup our hbase cluster with hadoop . We were in test
for few months with hbase-90.2 and hadoop-0.20 (cloudera) . Now we are
thinking to use hbase-0.92 in our final cluster. But we are confused about
hadoop
version. please suggest me hadoop version from your experience .

Is there anyone who are using hadoop-92.0 with CDH3 ? Should I continue
with that ?
BR
Saumitra Chowdhury
System Engineer
http://smartitengineering.com
25/5B, Block F, Haji Chinu Miah Road Bylane
Joint Quarter, Mohammadpur
Dhaka - 1207, Bangladesh

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

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
<[EMAIL PROTECTED]> 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

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:[EMAIL PROTECTED]]
Sent: Thursday, June 23, 2011 7:59 AM
To: [EMAIL PROTECTED]
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
<[EMAIL PROTECTED]> 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

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 <[EMAIL PROTECTED]> 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:[EMAIL PROTECTED]]
> Sent: Thursday, June 23, 2011 7:59 AM
> To: [EMAIL PROTECTED]
> 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
> <[EMAIL PROTECTED]> 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

Joey, Great, thank you for your cross-reference! - Andy Zhong

-----Original Message-----
From: Joey Echeverria [mailto:[EMAIL PROTECTED]]
Sent: Thursday, June 23, 2011 11:13 AM
To: [EMAIL PROTECTED]
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 <[EMAIL PROTECTED]>
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:[EMAIL PROTECTED]]
> Sent: Thursday, June 23, 2011 7:59 AM
> To: [EMAIL PROTECTED]
> 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
> <[EMAIL PROTECTED]> 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