Re: HBase and HDFS sync support in the main branch

[Arun C Murthy <ac...@hortonworks.com>]

Eugene,

 Currently we are close to getting 0.20.205 frozen which will be the first Apache Hadoop release with proper support for HBase.

hth,
Arun

On Sep 9, 2011, at 9:06 AM, Eugene Kirpichov wrote:

> Hello,
> 
> It appears from http://wiki.apache.org/hadoop/Hbase/HdfsSyncSupport
> that for more than at least the latest year, durable edits haven't
> been supported by the main branch of HBase & HDFS - only by a non-main
> branch, an unreleased branch and a third-party distribution.
> 
> This seems strange to me, as
> http://hbase.apache.org/acid-semantics.html seems to claim that
> durability is present, without indicating that it's actually not, by
> default (part of the page looks like a plan, not like a claim about
> the current state of things, which is also confusing).
> 
> Is this because durable edits are not that much of a needed feature?
> 
> [Disclaimer: I've not done much with HBase and Hadoop in general in a
> while, so I may be asking questions completely stupid in the current
> context]
> 
> -- 
> Eugene Kirpichov
> Principal Engineer, Mirantis Inc. http://www.mirantis.com/
> Editor, http://fprog.ru/

Re: HBase and HDFS sync support in the main branch

[Eugene Kirpichov <ek...@gmail.com>]

Hello Arun,

Thanks for the clarification. Do you mean 0.20.205 will be a "default"
(main, trunk, you name it) release and have durable edits?

On Fri, Sep 9, 2011 at 2:22 PM, Arun C Murthy <ac...@hortonworks.com> wrote:
> Eugene,
>
>  Currently we are close to getting 0.20.205 frozen which will be the first Apache Hadoop release with proper support for HBase.
>
> hth,
> Arun
>
> On Sep 9, 2011, at 9:06 AM, Eugene Kirpichov wrote:
>
>> Hello,
>>
>> It appears from http://wiki.apache.org/hadoop/Hbase/HdfsSyncSupport
>> that for more than at least the latest year, durable edits haven't
>> been supported by the main branch of HBase & HDFS - only by a non-main
>> branch, an unreleased branch and a third-party distribution.
>>
>> This seems strange to me, as
>> http://hbase.apache.org/acid-semantics.html seems to claim that
>> durability is present, without indicating that it's actually not, by
>> default (part of the page looks like a plan, not like a claim about
>> the current state of things, which is also confusing).
>>
>> Is this because durable edits are not that much of a needed feature?
>>
>> [Disclaimer: I've not done much with HBase and Hadoop in general in a
>> while, so I may be asking questions completely stupid in the current
>> context]
>>
>> --
>> Eugene Kirpichov
>> Principal Engineer, Mirantis Inc. http://www.mirantis.com/
>> Editor, http://fprog.ru/
>
>



-- 
Eugene Kirpichov
Principal Engineer, Mirantis Inc. http://www.mirantis.com/
Editor, http://fprog.ru/