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From Jonathan Ellis <jbel...@gmail.com>
Subject Re: [RELEASE] Apache Cassandra 1.0 released
Date Tue, 18 Oct 2011 13:20:53 GMT
Short version: yes, 1.0 addresses the known repair problems.

On Tue, Oct 18, 2011 at 7:29 AM, Maxim Potekhin <potekhin@bnl.gov> wrote:
> There was a problem in early 0.8 where the repair was taking
> forever -- am I right to assume this was fixed in 1.0?
>
> Many thanks to you guys,
>
> Maxim
>
>
> On 10/18/2011 2:25 PM, Thibaut Britz wrote:
>>
>> Great news!
>>
>> Especially the improved read performance and compactions are great!
>>
>> Thanks,
>> Thibaut
>>
>>
>> On Tue, Oct 18, 2011 at 2:11 PM, Jonathan Ellis<jbellis@gmail.com>  wrote:
>>>
>>> Thanks for the help, everyone!  This is a great milestone for Cassandra.
>>>
>>> On Tue, Oct 18, 2011 at 7:01 AM, Sylvain Lebresne<sylvain@datastax.com>
>>>  wrote:
>>>>
>>>> The Cassandra team is very pleased to announce the release of Apache
>>>> Cassandra
>>>> version 1.0.0. Cassandra 1.0.0 is a new major release that build upon
>>>> the
>>>> awesomeness of previous versions and adds numerous improvements[1,2],
>>>> amongst
>>>> which:
>>>>  - Compression of on-disk data files (SSTables), with checksummed blocks
>>>> to
>>>>    protect against bitrot[4].
>>>>  - Improvements to memory management through off-heap caches, arena
>>>>    allocation and automatic self-tuning, for less GC pauses and more
>>>>    predictable performances[5].
>>>>  - Better disk-space management: better control of the space taken by
>>>> commit
>>>>    logs and immediate deletion of obsolete data files.
>>>>  - New optional leveled compaction strategy with more predictable
>>>> performance
>>>>    and fixed sstable size[6].
>>>>  - Improved hinted handoffs, leading to less need for read repair for
>>>>    better read performances.
>>>>  - Lots of improvements to performance[7], CQL, repair, easier
>>>> operation,
>>>>    etc[8]...
>>>>
>>>> And as is the rule for some time now, rolling upgrades from previous
>>>> versions
>>>> are supported, so there is nothing stopping you to get all those goodies
>>>> right
>>>> now!
>>>>
>>>> Both source and binary distributions of Cassandra 1.0.0 can be
>>>> downloaded at:
>>>>
>>>>  http://cassandra.apache.org/download/
>>>>
>>>> Or you can use the debian package available from the project APT
>>>> repository[3]
>>>> (you will need to use the 10x series).
>>>>
>>>> The download page also link to the CQL drivers that, from this release
>>>> on, are
>>>> maintained out of tree[9].
>>>>
>>>>
>>>> That's all folks!
>>>>
>>>> [1]: http://goo.gl/t3qpw (CHANGES.txt)
>>>> [2]: http://goo.gl/6t0qN (NEWS.txt)
>>>> [3]: http://wiki.apache.org/cassandra/DebianPackaging
>>>> [4]:
>>>> http://www.datastax.com/dev/blog/whats-new-in-cassandra-1-0-compression
>>>> [5]:
>>>> http://www.datastax.com/dev/blog/whats-new-in-cassandra-1-0-improved-memory-and-disk-space-management
>>>> [6]:
>>>> http://www.datastax.com/dev/blog/leveled-compaction-in-apache-cassandra
>>>> [7]:
>>>> http://www.datastax.com/dev/blog/whats-new-in-cassandra-1-0-performance
>>>> [8]:
>>>> http://www.datastax.com/dev/blog/whats-new-in-cassandra-1-0-windows-service-new-cql-clients-and-more
>>>> [9]: http://acunu.com/blogs/eric-evans/cassandra-drivers-released/
>>>>
>>>
>>>
>>> --
>>> Jonathan Ellis
>>> Project Chair, Apache Cassandra
>>> co-founder of DataStax, the source for professional Cassandra support
>>> http://www.datastax.com
>>>
>
>



-- 
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com

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